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  1. Article ; Online: Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station.

    Adriani, O / Akaike, Y / Asano, K / Asaoka, Y / Bagliesi, M G / Berti, E / Bigongiari, G / Binns, W R / Bonechi, S / Bongi, M / Brogi, P / Bruno, A / Buckley, J H / Cannady, N / Castellini, G / Checchia, C / Cherry, M L / Collazuol, G / Di Felice, V /
    Ebisawa, K / Fuke, H / Guzik, T G / Hams, T / Hasebe, N / Hibino, K / Ichimura, M / Ioka, K / Ishizaki, W / Israel, M H / Kasahara, K / Kataoka, J / Kataoka, R / Katayose, Y / Kato, C / Kawanaka, N / Kawakubo, Y / Kohri, K / Krawczynski, H S / Krizmanic, J F / Lomtadze, T / Maestro, P / Marrocchesi, P S / Messineo, A M / Mitchell, J W / Miyake, S / Moiseev, A A / Mori, K / Mori, M / Mori, N / Motz, H M / Munakata, K / Murakami, H / Nakahira, S / Nishimura, J / de Nolfo, G A / Okuno, S / Ormes, J F / Ozawa, S / Pacini, L / Palma, F / Papini, P / Penacchioni, A V / Rauch, B F / Ricciarini, S B / Sakai, K / Sakamoto, T / Sasaki, M / Shimizu, Y / Shiomi, A / Sparvoli, R / Spillantini, P / Stolzi, F / Suh, J E / Sulaj, A / Takahashi, I / Takayanagi, M / Takita, M / Tamura, T / Terasawa, T / Tomida, H / Torii, S / Tsunesada, Y / Uchihori, Y / Ueno, S / Vannuccini, E / Wefel, J P / Yamaoka, K / Yanagita, S / Yoshida, A / Yoshida, K

    Physical review letters

    2019  Volume 122, Issue 18, Page(s) 181102

    Abstract: In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the International Space Station, including the detailed assessment of systematic uncertainties. The observation ...

    Abstract In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the International Space Station, including the detailed assessment of systematic uncertainties. The observation period used in this analysis is from October 13, 2015 to August 31, 2018 (1054 days). We have achieved the very wide energy range necessary to carry out measurements of the spectrum from 50 GeV to 10 TeV covering, for the first time in space, with a single instrument the whole energy interval previously investigated in most cases in separate subranges by magnetic spectrometers (BESS-TeV, PAMELA, and AMS-02) and calorimetric instruments (ATIC, CREAM, and NUCLEON). The observed spectrum is consistent with AMS-02 but extends to nearly an order of magnitude higher energy, showing a very smooth transition of the power-law spectral index from -2.81±0.03 (50-500 GeV) neglecting solar modulation effects (or -2.87±0.06 including solar modulation effects in the lower energy region) to -2.56±0.04 (1-10 TeV), thereby confirming the existence of spectral hardening and providing evidence of a deviation from a single power law by more than 3σ.
    Language English
    Publishing date 2019-05-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.122.181102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station.

    Adriani, O / Akaike, Y / Asano, K / Asaoka, Y / Bagliesi, M G / Berti, E / Bigongiari, G / Binns, W R / Bonechi, S / Bongi, M / Brogi, P / Buckley, J H / Cannady, N / Castellini, G / Checchia, C / Cherry, M L / Collazuol, G / Di Felice, V / Ebisawa, K /
    Fuke, H / Guzik, T G / Hams, T / Hareyama, M / Hasebe, N / Hibino, K / Ichimura, M / Ioka, K / Ishizaki, W / Israel, M H / Kasahara, K / Kataoka, J / Kataoka, R / Katayose, Y / Kato, C / Kawanaka, N / Kawakubo, Y / Kohri, K / Krawczynski, H S / Krizmanic, J F / Lomtadze, T / Maestro, P / Marrocchesi, P S / Messineo, A M / Mitchell, J W / Miyake, S / Moiseev, A A / Mori, K / Mori, M / Mori, N / Motz, H M / Munakata, K / Murakami, H / Nakahira, S / Nishimura, J / de Nolfo, G A / Okuno, S / Ormes, J F / Ozawa, S / Pacini, L / Palma, F / Papini, P / Penacchioni, A V / Rauch, B F / Ricciarini, S B / Sakai, K / Sakamoto, T / Sasaki, M / Shimizu, Y / Shiomi, A / Sparvoli, R / Spillantini, P / Stolzi, F / Suh, J E / Sulaj, A / Takahashi, I / Takayanagi, M / Takita, M / Tamura, T / Tateyama, N / Terasawa, T / Tomida, H / Torii, S / Tsunesada, Y / Uchihori, Y / Ueno, S / Vannuccini, E / Wefel, J P / Yamaoka, K / Yanagita, S / Yoshida, A / Yoshida, K

    Physical review letters

    2018  Volume 120, Issue 26, Page(s) 261102

    Abstract: Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station utilizing the data up to November 2017. The ... ...

    Abstract Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station utilizing the data up to November 2017. The analysis uses the full detector acceptance at high energies, approximately doubling the statistics compared to the previous result. CALET is an all-calorimetric instrument with a total thickness of 30 X_{0} at normal incidence and fine imaging capability, designed to achieve large proton rejection and excellent energy resolution well into the TeV energy region. The observed energy spectrum in the region below 1 TeV shows good agreement with Alpha Magnetic Spectrometer (AMS-02) data. In the energy region below ∼300  GeV, CALET's spectral index is found to be consistent with the AMS-02, Fermi Large Area Telescope (Fermi-LAT), and Dark Matter Particle Explorer (DAMPE), while from 300 to 600 GeV the spectrum is significantly softer than the spectra from the latter two experiments. The absolute flux of CALET is consistent with other experiments at around a few tens of GeV. However, it is lower than those of DAMPE and Fermi-LAT with the difference increasing up to several hundred GeV. The observed energy spectrum above ∼1  TeV suggests a flux suppression consistent within the errors with the results of DAMPE, while CALET does not observe any significant evidence for a narrow spectral feature in the energy region around 1.4 TeV. Our measured all-electron flux, including statistical errors and a detailed breakdown of the systematic errors, is tabulated in the Supplemental Material in order to allow more refined spectral analyses based on our data.
    Language English
    Publishing date 2018-06-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.120.261102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Energy Spectrum of Cosmic-Ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station.

    Adriani, O / Akaike, Y / Asano, K / Asaoka, Y / Bagliesi, M G / Bigongiari, G / Binns, W R / Bonechi, S / Bongi, M / Brogi, P / Buckley, J H / Cannady, N / Castellini, G / Checchia, C / Cherry, M L / Collazuol, G / Di Felice, V / Ebisawa, K / Fuke, H /
    Guzik, T G / Hams, T / Hareyama, M / Hasebe, N / Hibino, K / Ichimura, M / Ioka, K / Ishizaki, W / Israel, M H / Javaid, A / Kasahara, K / Kataoka, J / Kataoka, R / Katayose, Y / Kato, C / Kawanaka, N / Kawakubo, Y / Krawczynski, H S / Krizmanic, J F / Kuramata, S / Lomtadze, T / Maestro, P / Marrocchesi, P S / Messineo, A M / Mitchell, J W / Miyake, S / Mizutani, K / Moiseev, A A / Mori, K / Mori, M / Mori, N / Motz, H M / Munakata, K / Murakami, H / Nakahira, S / Nishimura, J / de Nolfo, G A / Okuno, S / Ormes, J F / Ozawa, S / Pacini, L / Palma, F / Papini, P / Penacchioni, A V / Rauch, B F / Ricciarini, S B / Sakai, K / Sakamoto, T / Sasaki, M / Shimizu, Y / Shiomi, A / Sparvoli, R / Spillantini, P / Stolzi, F / Takahashi, I / Takayanagi, M / Takita, M / Tamura, T / Tateyama, N / Terasawa, T / Tomida, H / Torii, S / Tsunesada, Y / Uchihori, Y / Ueno, S / Vannuccini, E / Wefel, J P / Yamaoka, K / Yanagita, S / Yoshida, A / Yoshida, K / Yuda, T

    Physical review letters

    2017  Volume 119, Issue 18, Page(s) 181101

    Abstract: First results of a cosmic-ray electron and positron spectrum from 10 GeV to 3 TeV is presented based upon observations with the CALET instrument on the International Space Station starting in October, 2015. Nearly a half million electron and positron ... ...

    Abstract First results of a cosmic-ray electron and positron spectrum from 10 GeV to 3 TeV is presented based upon observations with the CALET instrument on the International Space Station starting in October, 2015. Nearly a half million electron and positron events are included in the analysis. CALET is an all-calorimetric instrument with total vertical thickness of 30 X_{0} and a fine imaging capability designed to achieve a large proton rejection and excellent energy resolution well into the TeV energy region. The observed energy spectrum over 30 GeV can be fit with a single power law with a spectral index of -3.152±0.016 (stat+syst). Possible structure observed above 100 GeV requires further investigation with increased statistics and refined data analysis.
    Language English
    Publishing date 2017-11-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.119.181101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The CALorimetric Electron Telescope (CALET) for high-energy astroparticle physics on the International Space Station

    Adriani O. / Akaike Y. / Asano K. / Asaoka Y. / Bagliesi M.G. / Bigongiari G. / Binns W.R. / Bonechi S. / Bongi M. / Buckley J.H. / Castellini G. / Cherry M.L. / Collazuol G. / Ebisawa K. / Di Felice V. / Fuke H. / Guzik T.G. / Hams T. / Hareyama M. /
    Hasebe N. / Hibino K. / Ichimura M. / Ioka K. / Israel M.H. / Javaid A. / Kamioka E. / Kasahara K. / Kataoka J. / Kataoka R. / Katayose Y. / Kawanaka N. / Kitamura H. / Kotani T. / Krawczynski H.S. / Krizmanic J.F. / Kubota A. / Kuramata S. / Lomtadze T. / Maestro P. / Marcelli L. / Marrocchesi P.S. / Mitchell J.W. / Miyake S. / Mizutani K. / Moiseev A.A. / Mori K. / Mori M. / Mori N. / Motz H.M. / Munakata K. / Murakami H. / Nakagawa Y.E. / Nakahira S. / Nishimura J. / Okuno S. / Ormes J.F. / Ozawa S. / Palma F. / Papini P. / Rauch B.F. / Ricciarini S.B. / Sakamoto T. / Sasaki M. / Shibata M. / Shimizu Y. / Shiomi A. / Sparvoli R. / Spillantini P. / Takahashi I. / Takayanagi M. / Takita M. / Tamura T. / Tateyama N. / Terasawa T. / Tomida H. / Torii S. / Tunesada Y. / Uchihori Y. / Ueno S. / Vannuccini E. / Wefel J.P. / Yamaoka K. / Yanagita S. / Yoshida A. / Yoshida K. / Yuda T.

    EPJ Web of Conferences, Vol 95, p

    2015  Volume 04056

    Abstract: The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma ... ...

    Abstract The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma rays up to 10 TeV, of nuclei with Z from 1 to 40 up to 1 PeV energy, and will detect gamma-ray bursts in the 7 keV to 20 MeV energy range during a 5 year mission. These measurements are essential to investigate possible nearby astrophysical sources of high energy electrons, study the details of galactic particle propagation and search for dark matter signatures. The main detector of CALET, the Calorimeter, consists of a module to identify the particle charge, followed by a thin imaging calorimeter (3 radiation lengths) with tungsten plates interleaving scintillating fibre planes, and a thick energy measuring calorimeter (27 radiation lengths) composed of lead tungstate logs. The Calorimeter has the depth, imaging capabilities and energy resolution necessary for excellent separation between hadrons, electrons and gamma rays. The instrument is currently being prepared for launch (expected in 2015) to the International Space Station ISS, for installation on the Japanese Experiment Module - Exposure Facility (JEM-EF).
    Keywords Science ; Q ; Physics ; QC1-999
    Subject code 520
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  5. Article ; Online: The CALorimetric Electron Telescope (CALET) for high-energy astroparticle physics on the International Space Station

    Adriani O. / Akaike Y. / Asano K. / Asaoka Y. / Bagliesi M.G. / Bigongiari G. / Binns W.R. / Bonechi S. / Bongi M. / Buckley J.H. / Castellini G. / Cherry M.L. / Collazuol G. / Ebisawa K. / Di Felice V. / Fuke H. / Guzik T.G. / Hams T. / Hareyama M. /
    Hasebe N. / Hibino K. / Ichimura M. / Ioka K. / Israel M.H. / Javaid A. / Kamioka E. / Kasahara K. / Kataoka J. / Kataoka R. / Katayose Y. / Kawanaka N. / Kitamura H. / Kotani T. / Krawczynski H.S. / Krizmanic J.F. / Kubota A. / Kuramata S. / Lomtadze T. / Maestro P. / Marcelli L. / Marrocchesi P.S. / Mitchell J.W. / Miyake S. / Mizutani K. / Moiseev A.A. / Mori K. / Mori M. / Mori N. / Motz H.M. / Munakata K. / Murakami H. / Nakagawa Y.E. / Nakahira S. / Nishimura J. / Okuno S. / Ormes J.F. / Ozawa S. / Palma F. / Papini P. / Rauch B.F. / Ricciarini S.B. / Sakamoto T. / Sasaki M. / Shibata M. / Shimizu Y. / Shiomi A. / Sparvoli R. / Spillantini P. / Takahashi I. / Takayanagi M. / Takita M. / Tamura T. / Tateyama N. / Terasawa T. / Tomida H. / Torii S. / Tunesada Y. / Uchihori Y. / Ueno S. / Vannuccini E. / Wefel J.P. / Yamaoka K. / Yanagita S. / Yoshida A. / Yoshida K. / Yuda T.

    EPJ Web of Conferences, Vol 95, p

    2015  Volume 04056

    Abstract: The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma ... ...

    Abstract The CALorimetric Electron Telescope (CALET) is a space experiment, currently under development by Japan in collaboration with Italy and the United States, which will measure the flux of cosmic-ray electrons (and positrons) up to 20 TeV energy, of gamma rays up to 10 TeV, of nuclei with Z from 1 to 40 up to 1 PeV energy, and will detect gamma-ray bursts in the 7 keV to 20 MeV energy range during a 5 year mission. These measurements are essential to investigate possible nearby astrophysical sources of high energy electrons, study the details of galactic particle propagation and search for dark matter signatures. The main detector of CALET, the Calorimeter, consists of a module to identify the particle charge, followed by a thin imaging calorimeter (3 radiation lengths) with tungsten plates interleaving scintillating fibre planes, and a thick energy measuring calorimeter (27 radiation lengths) composed of lead tungstate logs. The Calorimeter has the depth, imaging capabilities and energy resolution necessary for excellent separation between hadrons, electrons and gamma rays. The instrument is currently being prepared for launch (expected in 2015) to the International Space Station ISS, for installation on the Japanese Experiment Module - Exposure Facility (JEM-EF).
    Keywords Science ; Q ; Physics ; QC1-999
    Subject code 520
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article ; Online: Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station.

    Aguilar, M / Aisa, D / Alpat, B / Alvino, A / Ambrosi, G / Andeen, K / Arruda, L / Attig, N / Azzarello, P / Bachlechner, A / Barao, F / Barrau, A / Barrin, L / Bartoloni, A / Basara, L / Battarbee, M / Battiston, R / Bazo, J / Becker, U /
    Behlmann, M / Beischer, B / Berdugo, J / Bertucci, B / Bigongiari, G / Bindi, V / Bizzaglia, S / Bizzarri, M / Boella, G / de Boer, W / Bollweg, K / Bonnivard, V / Borgia, B / Borsini, S / Boschini, M J / Bourquin, M / Burger, J / Cadoux, F / Cai, X D / Capell, M / Caroff, S / Casaus, J / Cascioli, V / Castellini, G / Cernuda, I / Cerreta, D / Cervelli, F / Chae, M J / Chang, Y H / Chen, A I / Chen, H / Cheng, G M / Chen, H S / Cheng, L / Chou, H Y / Choumilov, E / Choutko, V / Chung, C H / Clark, C / Clavero, R / Coignet, G / Consolandi, C / Contin, A / Corti, C / Cortina Gil, E / Coste, B / Creus, W / Crispoltoni, M / Cui, Z / Dai, Y M / Delgado, C / Della Torre, S / Demirköz, M B / Derome, L / Di Falco, S / Di Masso, L / Dimiccoli, F / Díaz, C / von Doetinchem, P / Donnini, F / Du, W J / Duranti, M / D'Urso, D / Eline, A / Eppling, F J / Eronen, T / Fan, Y Y / Farnesini, L / Feng, J / Fiandrini, E / Fiasson, A / Finch, E / Fisher, P / Galaktionov, Y / Gallucci, G / García, B / García-López, R / Gargiulo, C / Gast, H / Gebauer, I / Gervasi, M / Ghelfi, A / Gillard, W / Giovacchini, F / Goglov, P / Gong, J / Goy, C / Grabski, V / Grandi, D / Graziani, M / Guandalini, C / Guerri, I / Guo, K H / Haas, D / Habiby, M / Haino, S / Han, K C / He, Z H / Heil, M / Hoffman, J / Hsieh, T H / Huang, Z C / Huh, C / Incagli, M / Ionica, M / Jang, W Y / Jinchi, H / Kanishev, K / Kim, G N / Kim, K S / Kirn, Th / Kossakowski, R / Kounina, O / Kounine, A / Koutsenko, V / Krafczyk, M S / La Vacca, G / Laudi, E / Laurenti, G / Lazzizzera, I / Lebedev, A / Lee, H T / Lee, S C / Leluc, C / Levi, G / Li, H L / Li, J Q / Li, Q / Li, T X / Li, W / Li, Y / Li, Z H / Li, Z Y / Lim, S / Lin, C H / Lipari, P / Lippert, T / Liu, D / Liu, H / Lolli, M / Lomtadze, T / Lu, M J / Lu, S Q / Lu, Y S / Luebelsmeyer, K / Luo, J Z / Lv, S S / Majka, R / Mañá, C / Marín, J / Martin, T / Martínez, G / Masi, N / Maurin, D / Menchaca-Rocha, A / Meng, Q / Mo, D C / Morescalchi, L / Mott, P / Müller, M / Ni, J Q / Nikonov, N / Nozzoli, F / Nunes, P / Obermeier, A / Oliva, A / Orcinha, M / Palmonari, F / Palomares, C / Paniccia, M / Papi, A / Pauluzzi, M / Pedreschi, E / Pensotti, S / Pereira, R / Picot-Clemente, N / Pilo, F / Piluso, A / Pizzolotto, C / Plyaskin, V / Pohl, M / Poireau, V / Postaci, E / Putze, A / Quadrani, L / Qi, X M / Qin, X / Qu, Z Y / Räihä, T / Rancoita, P G / Rapin, D / Ricol, J S / Rodríguez, I / Rosier-Lees, S / Rozhkov, A / Rozza, D / Sagdeev, R / Sandweiss, J / Saouter, P / Sbarra, C / Schael, S / Schmidt, S M / Schulz von Dratzig, A / Schwering, G / Scolieri, G / Seo, E S / Shan, B S / Shan, Y H / Shi, J Y / Shi, X Y / Shi, Y M / Siedenburg, T / Son, D / Spada, F / Spinella, F / Sun, W / Sun, W H / Tacconi, M / Tang, C P / Tang, X W / Tang, Z C / Tao, L / Tescaro, D / Ting, Samuel C C / Ting, S M / Tomassetti, N / Torsti, J / Türkoğlu, C / Urban, T / Vagelli, V / Valente, E / Vannini, C / Valtonen, E / Vaurynovich, S / Vecchi, M / Velasco, M / Vialle, J P / Vitale, V / Vitillo, S / Wang, L Q / Wang, N H / Wang, Q L / Wang, R S / Wang, X / Wang, Z X / Weng, Z L / Whitman, K / Wienkenhöver, J / Wu, H / Wu, X / Xia, X / Xie, M / Xie, S / Xiong, R Q / Xin, G M / Xu, N S / Xu, W / Yan, Q / Yang, J / Yang, M / Ye, Q H / Yi, H / Yu, Y J / Yu, Z Q / Zeissler, S / Zhang, J H / Zhang, M T / Zhang, X B / Zhang, Z / Zheng, Z M / Zhuang, H L / Zhukov, V / Zichichi, A / Zimmermann, N / Zuccon, P / Zurbach, C

    Physical review letters

    2015  Volume 114, Issue 17, Page(s) 171103

    Abstract: A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, ...

    Abstract A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.
    Language English
    Publishing date 2015-05-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.114.171103
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station.

    Aguilar, M / Aisa, D / Alpat, B / Alvino, A / Ambrosi, G / Andeen, K / Arruda, L / Attig, N / Azzarello, P / Bachlechner, A / Barao, F / Barrau, A / Barrin, L / Bartoloni, A / Basara, L / Battarbee, M / Battiston, R / Bazo, J / Becker, U /
    Behlmann, M / Beischer, B / Berdugo, J / Bertucci, B / Bindi, V / Bizzaglia, S / Bizzarri, M / Boella, G / de Boer, W / Bollweg, K / Bonnivard, V / Borgia, B / Borsini, S / Boschini, M J / Bourquin, M / Burger, J / Cadoux, F / Cai, X D / Capell, M / Caroff, S / Casaus, J / Castellini, G / Cernuda, I / Cerreta, D / Cervelli, F / Chae, M J / Chang, Y H / Chen, A I / Chen, G M / Chen, H / Chen, H S / Cheng, L / Chou, H Y / Choumilov, E / Choutko, V / Chung, C H / Clark, C / Clavero, R / Coignet, G / Consolandi, C / Contin, A / Corti, C / Gil, E Cortina / Coste, B / Creus, W / Crispoltoni, M / Cui, Z / Dai, Y M / Delgado, C / Della Torre, S / Demirköz, M B / Derome, L / Di Falco, S / Di Masso, L / Dimiccoli, F / Díaz, C / von Doetinchem, P / Donnini, F / Duranti, M / D'Urso, D / Egorov, A / Eline, A / Eppling, F J / Eronen, T / Fan, Y Y / Farnesini, L / Feng, J / Fiandrini, E / Fiasson, A / Finch, E / Fisher, P / Formato, V / Galaktionov, Y / Gallucci, G / García, B / García-López, R / Gargiulo, C / Gast, H / Gebauer, I / Gervasi, M / Ghelfi, A / Giovacchini, F / Goglov, P / Gong, J / Goy, C / Grabski, V / Grandi, D / Graziani, M / Guandalini, C / Guerri, I / Guo, K H / Haas, D / Habiby, M / Haino, S / Han, K C / He, Z H / Heil, M / Hoffman, J / Hsieh, T H / Huang, Z C / Huh, C / Incagli, M / Ionica, M / Jang, W Y / Jinchi, H / Kanishev, K / Kim, G N / Kim, K S / Kirn, Th / Korkmaz, M A / Kossakowski, R / Kounina, O / Kounine, A / Koutsenko, V / Krafczyk, M S / La Vacca, G / Laudi, E / Laurenti, G / Lazzizzera, I / Lebedev, A / Lee, H T / Lee, S C / Leluc, C / Li, H L / Li, J Q / Li, Q / Li, T X / Li, W / Li, Y / Li, Z H / Li, Z Y / Lim, S / Lin, C H / Lipari, P / Lippert, T / Liu, D / Liu, H / Liu, Hu / Lolli, M / Lomtadze, T / Lu, M J / Lu, S Q / Lu, Y S / Luebelsmeyer, K / Luo, F / Luo, J Z / Lv, S S / Majka, R / Mañá, C / Marín, J / Martin, T / Martínez, G / Masi, N / Maurin, D / Menchaca-Rocha, A / Meng, Q / Mo, D C / Morescalchi, L / Mott, P / Müller, M / Nelson, T / Ni, J Q / Nikonov, N / Nozzoli, F / Nunes, P / Obermeier, A / Oliva, A / Orcinha, M / Palmonari, F / Palomares, C / Paniccia, M / Papi, A / Pauluzzi, M / Pedreschi, E / Pensotti, S / Pereira, R / Picot-Clemente, N / Pilo, F / Piluso, A / Pizzolotto, C / Plyaskin, V / Pohl, M / Poireau, V / Putze, A / Quadrani, L / Qi, X M / Qin, X / Qu, Z Y / Räihä, T / Rancoita, P G / Rapin, D / Ricol, J S / Rodríguez, I / Rosier-Lees, S / Rozhkov, A / Rozza, D / Sagdeev, R / Sandweiss, J / Saouter, P / Schael, S / Schmidt, S M / von Dratzig, A Schulz / Schwering, G / Scolieri, G / Seo, E S / Shan, B S / Shan, Y H / Shi, J Y / Shi, X Y / Shi, Y M / Siedenburg, T / Son, D / Song, J W / Spada, F / Spinella, F / Sun, W / Sun, W H / Tacconi, M / Tang, C P / Tang, X W / Tang, Z C / Tao, L / Tescaro, D / Ting, Samuel C C / Ting, S M / Tomassetti, N / Torsti, J / Türkoğlu, C / Urban, T / Vagelli, V / Valente, E / Vannini, C / Valtonen, E / Vaurynovich, S / Vecchi, M / Velasco, M / Vialle, J P / Vitale, V / Vitillo, S / Wang, L Q / Wang, N H / Wang, Q L / Wang, R S / Wang, X / Wang, Z X / Weng, Z L / Whitman, K / Wienkenhöver, J / Willenbrock, M / Wu, H / Wu, X / Xia, X / Xie, M / Xie, S / Xiong, R Q / Xu, N S / Xu, W / Yan, Q / Yang, J / Yang, M / Yang, Y / Ye, Q H / Yi, H / Yu, Y J / Yu, Z Q / Zeissler, S / Zhang, C / Zhang, J H / Zhang, M T / Zhang, S D / Zhang, S W / Zhang, X B / Zhang, Z / Zheng, Z M / Zhuang, H L / Zhukov, V / Zichichi, A / Zimmermann, N / Zuccon, P

    Physical review letters

    2015  Volume 115, Issue 21, Page(s) 211101

    Abstract: Knowledge of the precise rigidity dependence of the helium flux is important in understanding the origin, acceleration, and propagation of cosmic rays. A precise measurement of the helium flux in primary cosmic rays with rigidity (momentum/charge) from 1. ...

    Abstract Knowledge of the precise rigidity dependence of the helium flux is important in understanding the origin, acceleration, and propagation of cosmic rays. A precise measurement of the helium flux in primary cosmic rays with rigidity (momentum/charge) from 1.9 GV to 3 TV based on 50 million events is presented and compared to the proton flux. The detailed variation with rigidity of the helium flux spectral index is presented for the first time. The spectral index progressively hardens at rigidities larger than 100 GV. The rigidity dependence of the helium flux spectral index is similar to that of the proton spectral index though the magnitudes are different. Remarkably, the spectral index of the proton to helium flux ratio increases with rigidity up to 45 GV and then becomes constant; the flux ratio above 45 GV is well described by a single power law.
    Language English
    Publishing date 2015-11-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.115.211101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Precision Measurement of the (e^{+}+e^{-}) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station.

    Aguilar, M / Aisa, D / Alpat, B / Alvino, A / Ambrosi, G / Andeen, K / Arruda, L / Attig, N / Azzarello, P / Bachlechner, A / Barao, F / Barrau, A / Barrin, L / Bartoloni, A / Basara, L / Battarbee, M / Battiston, R / Bazo, J / Becker, U /
    Behlmann, M / Beischer, B / Berdugo, J / Bertucci, B / Bigongiari, G / Bindi, V / Bizzaglia, S / Bizzarri, M / Boella, G / de Boer, W / Bollweg, K / Bonnivard, V / Borgia, B / Borsini, S / Boschini, M J / Bourquin, M / Burger, J / Cadoux, F / Cai, X D / Capell, M / Caroff, S / Casaus, J / Cascioli, V / Castellini, G / Cernuda, I / Cervelli, F / Chae, M J / Chang, Y H / Chen, A I / Chen, H / Cheng, G M / Chen, H S / Cheng, L / Chikanian, A / Chou, H Y / Choumilov, E / Choutko, V / Chung, C H / Clark, C / Clavero, R / Coignet, G / Consolandi, C / Contin, A / Corti, C / Coste, B / Crispoltoni, M / Cui, Z / Dai, M / Delgado, C / Della Torre, S / Demirköz, M B / Derome, L / Di Falco, S / Di Masso, L / Dimiccoli, F / Díaz, C / von Doetinchem, P / Donnini, F / Du, W J / Duranti, M / D'Urso, D / Eline, A / Eppling, F J / Eronen, T / Fan, Y Y / Farnesini, L / Feng, J / Fiandrini, E / Fiasson, A / Finch, E / Fisher, P / Galaktionov, Y / Gallucci, G / García, B / García-López, R / Gargiulo, C / Gast, H / Gebauer, I / Gervasi, M / Ghelfi, A / Gillard, W / Giovacchini, F / Goglov, P / Gong, J / Goy, C / Grabski, V / Grandi, D / Graziani, M / Guandalini, C / Guerri, I / Guo, K H / Habiby, M / Haino, S / Han, K C / He, Z H / Heil, M / Hoffman, J / Hsieh, T H / Huang, Z C / Huh, C / Incagli, M / Ionica, M / Jang, W Y / Jinchi, H / Kanishev, K / Kim, G N / Kim, K S / Kirn, Th / Kossakowski, R / Kounina, O / Kounine, A / Koutsenko, V / Krafczyk, M S / Kunz, S / La Vacca, G / Laudi, E / Laurenti, G / Lazzizzera, I / Lebedev, A / Lee, H T / Lee, S C / Leluc, C / Li, H L / Li, J Q / Li, Q / Li, T X / Li, W / Li, Y / Li, Z H / Li, Z Y / Lim, S / Lin, C H / Lipari, P / Lippert, T / Liu, D / Liu, H / Lomtadze, T / Lu, M J / Lu, Y S / Luebelsmeyer, K / Luo, F / Luo, J Z / Lv, S S / Majka, R / Malinin, A / Mañá, C / Marín, J / Martin, T / Martínez, G / Masi, N / Maurin, D / Menchaca-Rocha, A / Meng, Q / Mo, D C / Morescalchi, L / Mott, P / Müller, M / Ni, J Q / Nikonov, N / Nozzoli, F / Nunes, P / Obermeier, A / Oliva, A / Orcinha, M / Palmonari, F / Palomares, C / Paniccia, M / Papi, A / Pauluzzi, M / Pedreschi, E / Pensotti, S / Pereira, R / Pilo, F / Piluso, A / Pizzolotto, C / Plyaskin, V / Pohl, M / Poireau, V / Postaci, E / Putze, A / Quadrani, L / Qi, X M / Räihä, T / Rancoita, P G / Rapin, D / Ricol, J S / Rodríguez, I / Rosier-Lees, S / Rozhkov, A / Rozza, D / Sagdeev, R / Sandweiss, J / Saouter, P / Sbarra, C / Schael, S / Schmidt, S M / Schuckardt, D / Schulz von Dratzig, A / Schwering, G / Scolieri, G / Seo, E S / Shan, B S / Shan, Y H / Shi, J Y / Shi, X Y / Shi, Y M / Siedenburg, T / Son, D / Spada, F / Spinella, F / Sun, W / Sun, W H / Tacconi, M / Tang, C P / Tang, X W / Tang, Z C / Tao, L / Tescaro, D / Ting, Samuel C C / Ting, S M / Tomassetti, N / Torsti, J / Türkoğlu, C / Urban, T / Vagelli, V / Valente, E / Vannini, C / Valtonen, E / Vaurynovich, S / Vecchi, M / Velasco, M / Vialle, J P / Wang, L Q / Wang, Q L / Wang, R S / Wang, X / Wang, Z X / Weng, Z L / Whitman, K / Wienkenhöver, J / Wu, H / Xia, X / Xie, M / Xie, S / Xiong, R Q / Xin, G M / Xu, N S / Xu, W / Yan, Q / Yang, J / Yang, M / Ye, Q H / Yi, H / Yu, Y J / Yu, Z Q / Zeissler, S / Zhang, J H / Zhang, M T / Zhang, X B / Zhang, Z / Zheng, Z M / Zhuang, H L / Zhukov, V / Zichichi, A / Zimmermann, N / Zuccon, P / Zurbach, C

    Physical review letters

    2014  Volume 113, Issue 22, Page(s) 221102

    Abstract: We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. ...

    Abstract We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).
    Language English
    Publishing date 2014-11-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.113.221102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: High statistics measurement of the positron fraction in primary cosmic rays of 0.5-500 GeV with the alpha magnetic spectrometer on the international space station.

    Accardo, L / Aguilar, M / Aisa, D / Alpat, B / Alvino, A / Ambrosi, G / Andeen, K / Arruda, L / Attig, N / Azzarello, P / Bachlechner, A / Barao, F / Barrau, A / Barrin, L / Bartoloni, A / Basara, L / Battarbee, M / Battiston, R / Bazo, J /
    Becker, U / Behlmann, M / Beischer, B / Berdugo, J / Bertucci, B / Bigongiari, G / Bindi, V / Bizzaglia, S / Bizzarri, M / Boella, G / de Boer, W / Bollweg, K / Bonnivard, V / Borgia, B / Borsini, S / Boschini, M J / Bourquin, M / Burger, J / Cadoux, F / Cai, X D / Capell, M / Caroff, S / Carosi, G / Casaus, J / Cascioli, V / Castellini, G / Cernuda, I / Cerreta, D / Cervelli, F / Chae, M J / Chang, Y H / Chen, A I / Chen, H / Cheng, G M / Chen, H S / Cheng, L / Chikanian, A / Chou, H Y / Choumilov, E / Choutko, V / Chung, C H / Cindolo, F / Clark, C / Clavero, R / Coignet, G / Consolandi, C / Contin, A / Corti, C / Coste, B / Cui, Z / Dai, M / Delgado, C / Della Torre, S / Demirköz, M B / Derome, L / Di Falco, S / Di Masso, L / Dimiccoli, F / Díaz, C / von Doetinchem, P / Du, W J / Duranti, M / D'Urso, D / Eline, A / Eppling, F J / Eronen, T / Fan, Y Y / Farnesini, L / Feng, J / Fiandrini, E / Fiasson, A / Finch, E / Fisher, P / Galaktionov, Y / Gallucci, G / García, B / García-López, R / Gast, H / Gebauer, I / Gervasi, M / Ghelfi, A / Gillard, W / Giovacchini, F / Goglov, P / Gong, J / Goy, C / Grabski, V / Grandi, D / Graziani, M / Guandalini, C / Guerri, I / Guo, K H / Haas, D / Habiby, M / Haino, S / Han, K C / He, Z H / Heil, M / Henning, R / Hoffman, J / Hsieh, T H / Huang, Z C / Huh, C / Incagli, M / Ionica, M / Jang, W Y / Jinchi, H / Kanishev, K / Kim, G N / Kim, K S / Kirn, Th / Kossakowski, R / Kounina, O / Kounine, A / Koutsenko, V / Krafczyk, M S / Kunz, S / La Vacca, G / Laudi, E / Laurenti, G / Lazzizzera, I / Lebedev, A / Lee, H T / Lee, S C / Leluc, C / Levi, G / Li, H L / Li, J Q / Li, Q / Li, T X / Li, W / Li, Y / Li, Z H / Li, Z Y / Lim, S / Lin, C H / Lipari, P / Lippert, T / Liu, D / Liu, H / Lolli, M / Lomtadze, T / Lu, M J / Lu, Y S / Luebelsmeyer, K / Luo, F / Luo, J Z / Lv, S S / Majka, R / Malinin, A / Mañá, C / Marín, J / Martin, T / Martínez, G / Masi, N / Massera, F / Maurin, D / Menchaca-Rocha, A / Meng, Q / Mo, D C / Monreal, B / Morescalchi, L / Mott, P / Müller, M / Ni, J Q / Nikonov, N / Nozzoli, F / Nunes, P / Obermeier, A / Oliva, A / Orcinha, M / Palmonari, F / Palomares, C / Paniccia, M / Papi, A / Pauluzzi, M / Pedreschi, E / Pensotti, S / Pereira, R / Pilastrini, R / Pilo, F / Piluso, A / Pizzolotto, C / Plyaskin, V / Pohl, M / Poireau, V / Postaci, E / Putze, A / Quadrani, L / Qi, X M / Rancoita, P G / Rapin, D / Ricol, J S / Rodríguez, I / Rosier-Lees, S / Rossi, L / Rozhkov, A / Rozza, D / Rybka, G / Sagdeev, R / Sandweiss, J / Saouter, P / Sbarra, C / Schael, S / Schmidt, S M / Schuckardt, D / Schulz von Dratzig, A / Schwering, G / Scolieri, G / Seo, E S / Shan, B S / Shan, Y H / Shi, J Y / Shi, X Y / Shi, Y M / Siedenburg, T / Son, D / Spada, F / Spinella, F / Sun, W / Sun, W H / Tacconi, M / Tang, C P / Tang, X W / Tang, Z C / Tao, L / Tescaro, D / Ting, Samuel C C / Ting, S M / Tomassetti, N / Torsti, J / Türkoğlu, C / Urban, T / Vagelli, V / Valente, E / Vannini, C / Valtonen, E / Vaurynovich, S / Vecchi, M / Velasco, M / Vialle, J P / Vitale, V / Volpini, G / Wang, L Q / Wang, Q L / Wang, R S / Wang, X / Wang, Z X / Weng, Z L / Whitman, K / Wienkenhöver, J / Wu, H / Wu, K Y / Xia, X / Xie, M / Xie, S / Xiong, R Q / Xin, G M / Xu, N S / Xu, W / Yan, Q / Yang, J / Yang, M / Ye, Q H / Yi, H / Yu, Y J / Yu, Z Q / Zeissler, S / Zhang, J H / Zhang, M T / Zhang, X B / Zhang, Z / Zheng, Z M / Zhou, F / Zhuang, H L / Zhukov, V / Zichichi, A / Zimmermann, N / Zuccon, P / Zurbach, C

    Physical review letters

    2014  Volume 113, Issue 12, Page(s) 121101

    Abstract: A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation ... ...

    Abstract A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200  GeV the positron fraction no longer exhibits an increase with energy.
    Language English
    Publishing date 2014-09-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.113.121101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station.

    Aguilar, M / Aisa, D / Alvino, A / Ambrosi, G / Andeen, K / Arruda, L / Attig, N / Azzarello, P / Bachlechner, A / Barao, F / Barrau, A / Barrin, L / Bartoloni, A / Basara, L / Battarbee, M / Battiston, R / Bazo, J / Becker, U / Behlmann, M /
    Beischer, B / Berdugo, J / Bertucci, B / Bigongiari, G / Bindi, V / Bizzaglia, S / Bizzarri, M / Boella, G / de Boer, W / Bollweg, K / Bonnivard, V / Borgia, B / Borsini, S / Boschini, M J / Bourquin, M / Burger, J / Cadoux, F / Cai, X D / Capell, M / Caroff, S / Casaus, J / Cascioli, V / Castellini, G / Cernuda, I / Cervelli, F / Chae, M J / Chang, Y H / Chen, A I / Chen, H / Cheng, G M / Chen, H S / Cheng, L / Chikanian, A / Chou, H Y / Choumilov, E / Choutko, V / Chung, C H / Clark, C / Clavero, R / Coignet, G / Consolandi, C / Contin, A / Corti, C / Coste, B / Cui, Z / Dai, M / Delgado, C / Della Torre, S / Demirköz, M B / Derome, L / Di Falco, S / Di Masso, L / Dimiccoli, F / Díaz, C / von Doetinchem, P / Du, W J / Duranti, M / D'Urso, D / Eline, A / Eppling, F J / Eronen, T / Fan, Y Y / Farnesini, L / Feng, J / Fiandrini, E / Fiasson, A / Finch, E / Fisher, P / Galaktionov, Y / Gallucci, G / García, B / García-López, R / Gast, H / Gebauer, I / Gervasi, M / Ghelfi, A / Gillard, W / Giovacchini, F / Goglov, P / Gong, J / Goy, C / Grabski, V / Grandi, D / Graziani, M / Guandalini, C / Guerri, I / Guo, K H / Habiby, M / Haino, S / Han, K C / He, Z H / Heil, M / Hoffman, J / Hsieh, T H / Huang, Z C / Huh, C / Incagli, M / Ionica, M / Jang, W Y / Jinchi, H / Kanishev, K / Kim, G N / Kim, K S / Kirn, Th / Kossakowski, R / Kounina, O / Kounine, A / Koutsenko, V / Krafczyk, M S / Kunz, S / La Vacca, G / Laudi, E / Laurenti, G / Lazzizzera, I / Lebedev, A / Lee, H T / Lee, S C / Leluc, C / Li, H L / Li, J Q / Li, Q / Li, T X / Li, W / Li, Y / Li, Z H / Li, Z Y / Lim, S / Lin, C H / Lipari, P / Lippert, T / Liu, D / Liu, H / Lomtadze, T / Lu, M J / Lu, Y S / Luebelsmeyer, K / Luo, F / Luo, J Z / Lv, S S / Majka, R / Malinin, A / Mañá, C / Marín, J / Martin, T / Martínez, G / Masi, N / Maurin, D / Menchaca-Rocha, A / Meng, Q / Mo, D C / Morescalchi, L / Mott, P / Müller, M / Ni, J Q / Nikonov, N / Nozzoli, F / Nunes, P / Obermeier, A / Oliva, A / Orcinha, M / Palmonari, F / Palomares, C / Paniccia, M / Papi, A / Pedreschi, E / Pensotti, S / Pereira, R / Pilo, F / Piluso, A / Pizzolotto, C / Plyaskin, V / Pohl, M / Poireau, V / Postaci, E / Putze, A / Quadrani, L / Qi, X M / Rancoita, P G / Rapin, D / Ricol, J S / Rodríguez, I / Rosier-Lees, S / Rozhkov, A / Rozza, D / Sagdeev, R / Sandweiss, J / Saouter, P / Sbarra, C / Schael, S / Schmidt, S M / Schuckardt, D / Schulz von Dratzig, A / Schwering, G / Scolieri, G / Seo, E S / Shan, B S / Shan, Y H / Shi, J Y / Shi, X Y / Shi, Y M / Siedenburg, T / Son, D / Spada, F / Spinella, F / Sun, W / Sun, W H / Tacconi, M / Tang, C P / Tang, X W / Tang, Z C / Tao, L / Tescaro, D / Ting, Samuel C C / Ting, S M / Tomassetti, N / Torsti, J / Türkoğlu, C / Urban, T / Vagelli, V / Valente, E / Vannini, C / Valtonen, E / Vaurynovich, S / Vecchi, M / Velasco, M / Vialle, J P / Wang, L Q / Wang, Q L / Wang, R S / Wang, X / Wang, Z X / Weng, Z L / Whitman, K / Wienkenhöver, J / Wu, H / Xia, X / Xie, M / Xie, S / Xiong, R Q / Xin, G M / Xu, N S / Xu, W / Yan, Q / Yang, J / Yang, M / Ye, Q H / Yi, H / Yu, Y J / Yu, Z Q / Zeissler, S / Zhang, J H / Zhang, M T / Zhang, X B / Zhang, Z / Zheng, Z M / Zhuang, H L / Zhukov, V / Zichichi, A / Zimmermann, N / Zuccon, P / Zurbach, C

    Physical review letters

    2014  Volume 113, Issue 12, Page(s) 121102

    Abstract: Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the ... ...

    Abstract Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30  GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.
    Language English
    Publishing date 2014-09-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.113.121102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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