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  1. Artikel ; Online: Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory.

    Miramonti, L / Bellini, G / Benziger, J / Bick, D / Bonfini, G / Bravo, D / Buizza Avanzini, M / Caccianiga, B / Cadonati, L / Calaprice, F / Carraro, C / Cavalcante, P / Chavarria, A / Chubakov, V / D'Angelo, D / Davini, S / Derbin, A / Etenko, A / Fomenko, K /
    Franco, D / Galbiati, C / Gazzana, S / Ghiano, C / Giammarchi, M / Göger-Neff, M / Goretti, A / Grandi, L / Guardincerri, E / Hardy, S / Ianni, Aldo / Ianni, Andrea / Kobychev, V / Korablev, D / Korga, G / Koshio, Y / Kryn, D / Laubenstein, M / Lewke, T / Lissia, M / Litvinovich, E / Loer, B / Lombardi, F / Lombardi, P / Ludhova, L / Machulin, I / Manecki, S / Maneschg, W / Mantovani, F / Manuzio, G / Meindl, Q / Meroni, E / Misiaszek, M / Montanari, D / Mosteiro, P / Muratova, V / Nisi, S / Oberauer, L / Obolensky, M / Ortica, F / Otis, K / Pallavicini, M / Papp, L / Perasso, L / Perasso, S / Pocar, A / Ranucci, G / Razeto, A / Re, A / Romani, A / Rossi, N / Sabelnikov, A / Saldanha, R / Salvo, C / Schönert, S / Simgen, H / Skorokhvatov, M / Smirnov, O / Sotnikov, A / Sukhotin, S / Suvorov, Y / Tartaglia, R / Testera, G / Vignaud, D / Vogelaar, R B / von Feilitzsch, F / Winter, J / Wojcik, M / Wright, A / Wurm, M / Xhixha, G / Xu, J / Zaimidoroga, O / Zavatarelli, S / Zuzel, G

    Journal of environmental radioactivity

    2014  Band 138, Seite(n) 444–446

    Abstract: The decays of (214)Po into (210)Pb and of (212)Po into (208)Pb tagged by the previous decays from (214)Bi and (212)Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We ... ...

    Abstract The decays of (214)Po into (210)Pb and of (212)Po into (208)Pb tagged by the previous decays from (214)Bi and (212)Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We find that the mean lifetime of (214)Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of (212)Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results are compatible with previous measurements, have a much better signal to background ratio, and reduce the overall uncertainties.
    Mesh-Begriff(e) Alpha Particles ; Half-Life ; Laboratories ; Lead Radioisotopes/analysis ; Polonium/analysis ; Radiation Monitoring ; Radioactive Pollutants/analysis
    Chemische Substanzen Lead Radioisotopes ; Radioactive Pollutants ; Polonium (DQY03U61EJ)
    Sprache Englisch
    Erscheinungsdatum 2014-12
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/j.jenvrad.2014.02.025
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: First evidence of pep solar neutrinos by direct detection in Borexino.

    Bellini, G / Benziger, J / Bick, D / Bonetti, S / Bonfini, G / Bravo, D / Buizza Avanzini, M / Caccianiga, B / Cadonati, L / Calaprice, F / Carraro, C / Cavalcante, P / Chavarria, A / Chepurnov, A / D'Angelo, D / Davini, S / Derbin, A / Etenko, A / Fomenko, K /
    Franco, D / Galbiati, C / Gazzana, S / Ghiano, C / Giammarchi, M / Goeger-Neff, M / Goretti, A / Grandi, L / Guardincerri, E / Hardy, S / Ianni, Aldo / Ianni, Andrea / Korablev, D / Korga, G / Koshio, Y / Kryn, D / Laubenstein, M / Lewke, T / Litvinovich, E / Loer, B / Lombardi, F / Lombardi, P / Ludhova, L / Machulin, I / Manecki, S / Maneschg, W / Manuzio, G / Meindl, Q / Meroni, E / Miramonti, L / Misiaszek, M / Montanari, D / Mosteiro, P / Muratova, V / Oberauer, L / Obolensky, M / Ortica, F / Otis, K / Pallavicini, M / Papp, L / Perasso, L / Perasso, S / Pocar, A / Quirk, J / Raghavan, R S / Ranucci, G / Razeto, A / Re, A / Romani, A / Sabelnikov, A / Saldanha, R / Salvo, C / Schönert, S / Simgen, H / Skorokhvatov, M / Smirnov, O / Sotnikov, A / Sukhotin, S / Suvorov, Y / Tartaglia, R / Testera, G / Vignaud, D / Vogelaar, R B / von Feilitzsch, F / Winter, J / Wojcik, M / Wright, A / Wurm, M / Xu, J / Zaimidoroga, O / Zavatarelli, S / Zuzel, G

    Physical review letters

    2012  Band 108, Heft 5, Seite(n) 51302

    Abstract: We observed, for the first time, solar neutrinos in the 1.0-1.5 MeV energy range. We determined the rate of pep solar neutrino interactions in Borexino to be 3.1±0.6{stat}±0.3{syst}  counts/(day·100  ton). Assuming the pep neutrino flux predicted by the ... ...

    Abstract We observed, for the first time, solar neutrinos in the 1.0-1.5 MeV energy range. We determined the rate of pep solar neutrino interactions in Borexino to be 3.1±0.6{stat}±0.3{syst}  counts/(day·100  ton). Assuming the pep neutrino flux predicted by the standard solar model, we obtained a constraint on the CNO solar neutrino interaction rate of <7.9  counts/(day·100  ton) (95% C.L.). The absence of the solar neutrino signal is disfavored at 99.97% C.L., while the absence of the pep signal is disfavored at 98% C.L. The necessary sensitivity was achieved by adopting data analysis techniques for the rejection of cosmogenic {11}C, the dominant background in the 1-2 MeV region. Assuming the Mikheyev-Smirnov-Wolfenstein large mixing angle solution to solar neutrino oscillations, these values correspond to solar neutrino fluxes of (1.6±0.3)×10{8}  cm{-2} s^{-1} and <7.7×10{8}  cm{-2} s{-1} (95% C.L.), respectively, in agreement with both the high and low metallicity standard solar models. These results represent the first direct evidence of the pep neutrino signal and the strongest constraint of the CNO solar neutrino flux to date.
    Sprache Englisch
    Erscheinungsdatum 2012-02-03
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.108.051302
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Precision measurement of the (7)Be solar neutrino interaction rate in Borexino.

    Bellini, G / Benziger, J / Bick, D / Bonetti, S / Bonfini, G / Buizza Avanzini, M / Caccianiga, B / Cadonati, L / Calaprice, F / Carraro, C / Cavalcante, P / Chavarria, A / D'Angelo, D / Davini, S / Derbin, A / Etenko, A / Fomenko, K / Franco, D / Galbiati, C /
    Gazzana, S / Ghiano, C / Giammarchi, M / Goeger-Neff, M / Goretti, A / Grandi, L / Guardincerri, E / Hardy, S / Ianni, Aldo / Ianni, Andrea / Kobychev, V / Korablev, D / Korga, G / Koshio, Y / Kryn, D / Laubenstein, M / Lewke, T / Litvinovich, E / Loer, B / Lombardi, F / Lombardi, P / Ludhova, L / Machulin, I / Manecki, S / Maneschg, W / Manuzio, G / Meindl, Q / Meroni, E / Miramonti, L / Misiaszek, M / Montanari, D / Mosteiro, P / Muratova, V / Oberauer, L / Obolensky, M / Ortica, F / Pallavicini, M / Papp, L / Peña-Garay, C / Perasso, L / Perasso, S / Pocar, A / Raghavan, R S / Ranucci, G / Razeto, A / Re, A / Romani, A / Sabelnikov, A / Saldanha, R / Salvo, C / Schönert, S / Simgen, H / Skorokhvatov, M / Smirnov, O / Sotnikov, A / Sukhotin, S / Suvorov, Y / Tartaglia, R / Testera, G / Vignaud, D / Vogelaar, R B / von Feilitzsch, F / Winter, J / Wojcik, M / Wright, A / Wurm, M / Xu, J / Zaimidoroga, O / Zavatarelli, S / Zuzel, G

    Physical review letters

    2011  Band 107, Heft 14, Seite(n) 141302

    Abstract: The rate of neutrino-electron elastic scattering interactions from 862 keV (7)Be solar neutrinos in Borexino is determined to be 46.0±1.5(stat)(-1.6)(+1.5)(syst) counts/(day·100  ton). This corresponds to a ν(e)-equivalent (7)Be solar neutrino flux of (3. ...

    Abstract The rate of neutrino-electron elastic scattering interactions from 862 keV (7)Be solar neutrinos in Borexino is determined to be 46.0±1.5(stat)(-1.6)(+1.5)(syst) counts/(day·100  ton). This corresponds to a ν(e)-equivalent (7)Be solar neutrino flux of (3.10±0.15)×10(9)  cm(-2) s(-1) and, under the assumption of ν(e) transition to other active neutrino flavours, yields an electron neutrino survival probability of 0.51±0.07 at 862 keV. The no flavor change hypothesis is ruled out at 5.0 σ. A global solar neutrino analysis with free fluxes determines Φ(pp)=6.06(-0.06)(+0.02)×10(10)  cm(-2) s(-1) and Φ(CNO)<1.3×10(9)  cm(-2) s(-1) (95% C.L.). These results significantly improve the precision with which the Mikheyev-Smirnov-Wolfenstein large mixing angle neutrino oscillation model is experimentally tested at low energy.
    Sprache Englisch
    Erscheinungsdatum 2011-09-30
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.107.141302
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Buch ; Online: Cosmic-muon flux and annual modulation in Borexino at 3800 m water-equivalent depth

    Bellini, G. / Benziger, J. / Bick, D. / Bonfini, G. / Bravo, D. / Avanzini, M. Buizza / Caccianiga, B. / Cadonati, L. / Calaprice, F. / Carraro, C. / Cavalcante, P. / Chavarria, A. / Chepurnov, A. / D'Angelo, D. / Davini, S. / Derbin, A. / Etenko, A. / von Feilitzsch, F. / Fomenko, K. /
    Franco, D. / Galbiati, C. / Gazzana, S. / Ghiano, C. / Giammarchi, M. / Goeger-Neff, M. / Goretti, A. / Grandi, L. / Guardincerri, E. / Hagner, C. / Hardy, S. / Ianni, Aldo / Ianni, Andrea / Korablev, D. / Korga, G. / Koshio, Y. / Kryn, D. / Laubenstein, M. / Lewke, T. / Litvinovich, E. / Loer, B. / Lombardi, F. / Lombardi, P. / Ludhova, L. / Machulin, I. / Manecki, S. / Maneschg, W. / Manuzio, G. / Meindl, Q. / Meroni, E. / Miramonti, L. / Misiaszek, M. / Montanari, D. / Mosteiro, P. / Muratova, V. / Oberauer, L. / Obolensky, M. / Ortica, F. / Otis, K. / Pallavicini, M. / Papp, L. / Perasso, L. / Perasso, S. / Pocar, A. / Raghavan, R. S. / Ranucci, G. / Razeto, A. / Re, A. / Romani, A. / Sabelnikov, A. / Saldanha, R. / Salvo, C. / Schönert, S. / Simgen, H. / Skorokhvatov, M. / Smirnov, O. / Sotnikov, A. / Sukhotin, S. / Suvorov, Y. / Tartaglia, R. / Testera, G. / Vignaud, D. / Vogelaar, R. B. / Winter, J. / Wojcik, M. / Wright, A. / Wurm, M. / Xu, J. / Zaimidoroga, O. / Zavatarelli, S. / Zuzel, G.

    2012  

    Abstract: We have measured the muon flux at the underground Gran Sasso National Laboratory (3800 m w.e.) to be (3.41 \pm 0.01) \times 10-4m-2s-1 using four years of Borexino data. A modulation of this signal is observed with a period of (366\pm3) days and a ... ...

    Abstract We have measured the muon flux at the underground Gran Sasso National Laboratory (3800 m w.e.) to be (3.41 \pm 0.01) \times 10-4m-2s-1 using four years of Borexino data. A modulation of this signal is observed with a period of (366\pm3) days and a relative amplitude of (1.29 \pm 0.07)%. The measured phase is (179 \pm 6) days, corresponding to a maximum on the 28th of June. Using the most complete atmospheric data models available, muon rate fluctuations are shown to be positively correlated with atmospheric temperature, with an effective coefficient {\alpha}T = 0.93 \pm 0.04. This result represents the most precise study of the muon flux modulation for this site and is in good agreement with expectations.

    Comment: 14 pages, 8 figures, published on JCAP as JCAP05(2012)015 on May 15th 2012
    Schlagwörter High Energy Physics - Experiment ; Astrophysics - Instrumentation and Methods for Astrophysics ; Physics - Atmospheric and Oceanic Physics
    Thema/Rubrik (Code) 551
    Erscheinungsdatum 2012-02-28
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel: Direct measurement of the 7Be solar neutrino flux with 192 days of borexino data.

    Arpesella, C / Back, H O / Balata, M / Bellini, G / Benziger, J / Bonetti, S / Brigatti, A / Caccianiga, B / Cadonati, L / Calaprice, F / Carraro, C / Cecchet, G / Chavarria, A / Chen, M / Dalnoki-Veress, F / D'Angelo, D / de Bari, A / de Bellefon, A / de Kerret, H /
    Derbin, A / Deutsch, M / di Credico, A / di Pietro, G / Eisenstein, R / Elisei, F / Etenko, A / Fernholz, R / Fomenko, K / Ford, R / Franco, D / Freudiger, B / Galbiati, C / Gatti, F / Gazzana, S / Giammarchi, M / Giugni, D / Goeger-Neff, M / Goldbrunner, T / Goretti, A / Grieb, C / Hagner, C / Hampel, W / Harding, E / Hardy, S / Hartman, F X / Hertrich, T / Heusser, G / Ianni, Aldo / Ianni, Andrea / Joyce, M / Kiko, J / Kirsten, T / Kobychev, V / Korga, G / Korschinek, G / Kryn, D / Lagomarsino, V / Lamarche, P / Laubenstein, M / Lendvai, C / Leung, M / Lewke, T / Litvinovich, E / Loer, B / Lombardi, P / Ludhova, L / Machulin, I / Malvezzi, S / Manecki, S / Maneira, J / Maneschg, W / Manno, I / Manuzio, D / Manuzio, G / Martemianov, A / Masetti, F / Mazzucato, U / McCarty, K / McKinsey, D / Meindl, Q / Meroni, E / Miramonti, L / Misiaszek, M / Montanari, D / Monzani, M E / Muratova, V / Musico, P / Neder, H / Nelson, A / Niedermeier, L / Oberauer, L / Obolensky, M / Orsini, M / Ortica, F / Pallavicini, M / Papp, L / Parmeggiano, S / Perasso, L / Pocar, A / Raghavan, R S / Ranucci, G / Rau, W / Razeto, A / Resconi, E / Risso, P / Romani, A / Rountree, D / Sabelnikov, A / Saldanha, R / Salvo, C / Schimizzi, D / Schönert, S / Shutt, T / Simgen, H / Skorokhvatov, M / Smirnov, O / Sonnenschein, A / Sotnikov, A / Sukhotin, S / Suvorov, Y / Tartaglia, R / Testera, G / Vignaud, D / Vitale, S / Vogelaar, R B / von Feilitzsch, F / von Hentig, R / von Hentig, T / Wojcik, M / Wurm, M / Zaimidoroga, O / Zavatarelli, S / Zuzel, G

    Physical review letters

    2008  Band 101, Heft 9, Seite(n) 91302

    Abstract: We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49+/-3stat+/-4syst counts/(day.100 ton). The ... ...

    Abstract We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49+/-3stat+/-4syst counts/(day.100 ton). The hypothesis of no oscillation for 7Be solar neutrinos is inconsistent with our measurement at the 4sigma C.L. Our result is the first direct measurement of the survival probability for solar nu(e) in the transition region between matter-enhanced and vacuum-driven oscillations. The measurement improves the experimental determination of the flux of 7Be, pp, and CNO solar nu(e), and the limit on the effective neutrino magnetic moment using solar neutrinos.
    Sprache Englisch
    Erscheinungsdatum 2008-08-29
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.101.091302
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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