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  1. Article ; Online: Study of the γ decay of high-lying states in 208Pb via inelastic scattering of 17O ions

    Crespi F.C.L. / Bracco A.

    EPJ Web of Conferences, Vol 38, p

    2012  Volume 03001

    Abstract: High-lying states in 208Pb nucleus were populated via inelastic scattering of a 17O beam at bombarding energy of 20 MeV/u. Their subsequent gamma decay was measured with the detector system AGATA Demonstrator based on HPGe detectors, coupled to an array ... ...

    Abstract High-lying states in 208Pb nucleus were populated via inelastic scattering of a 17O beam at bombarding energy of 20 MeV/u. Their subsequent gamma decay was measured with the detector system AGATA Demonstrator based on HPGe detectors, coupled to an array of large volume LaBr3:Ce scintillators. Preliminary results in comparison with (γ,γ′) data, for states in the 5–8 MeV energy interval, seem to indicate that in that region the states belong to two different groups one with a isoscalar character and the other with a isovector nature. This is similar to what was observed in other stable nuclei with (α,α′γ) experiments. The multipolarity of the observed gamma transitions is determined with remarkable sensitivity thanks to angular distribution measurements. Data aiming at studying the neutron decay of the Giant Quadrupole Resonance in the 208Pb by the high resolution measurement of the following gamma decay are also presented in their preliminary form.
    Keywords Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
    Subject code 530
    Language English
    Publishing date 2012-12-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Characterization of Large Volume 3.5″ x 8″ LaBr3:Ce Detectors for the HECTOR+ array

    Camera F. / Giaz A. / Pellegri L. / Riboldi S. / Blasi N. / Boiano C. / Bracco A. / Brambilla S. / Ceruti S. / Coelli S. / Crespi F.C.L. / Csatlòs M. / Krasznahorkay A. / Gulyàs J. / Lodetti S. / Frega S. / Miani A. / Million B. / Stuhl L. /
    Wieland O.

    EPJ Web of Conferences, Vol 66, p

    2014  Volume 11008

    Abstract: A selection of the properties of large volume, cylindrical 3.5” x 8” LaBr3:Ce scintillation detectors coupled to a 3.5” PMT (model R10233-1000SEL from HAMAMATSU) and a special designed Voltage Divider (LABRVD) will be discussed. A number of 10 of such ... ...

    Abstract A selection of the properties of large volume, cylindrical 3.5” x 8” LaBr3:Ce scintillation detectors coupled to a 3.5” PMT (model R10233-1000SEL from HAMAMATSU) and a special designed Voltage Divider (LABRVD) will be discussed. A number of 10 of such detectors constitute the HECTOR+ array which, in fall 2012, measured at GSI coupled to the AGATA DEMOSTRATOR at the PRESPEC experimental setup. These crystals are among the largest ever produced and needed to be characterized. We have performed several tests and here we discuss, in particular, the energy resolution measured using monochromatic γ−ray sources and in-beam reactions producing γ−rays up to 22.6 MeV. As already measured in two previous works a saturation in the energy resolution was observed in case of high energy gamma rays. Crystal non-homogeneities and PMT gain drifts can affect the resolution of measurements especially in case of high energy γ−rays.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-03-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Isospin Properties of Nuclear Pair Correlations from the Level Structure of the Self-Conjugate Nucleus ^{88}Ru.

    Cederwall, B / Liu, X / Aktas, Ö / Ertoprak, A / Zhang, W / Qi, C / Clément, E / de France, G / Ralet, D / Gadea, A / Goasduff, A / Jaworski, G / Kuti, I / Nyakó, B M / Nyberg, J / Palacz, M / Wadsworth, R / Valiente-Dobón, J J / Al-Azri, H /
    Ataç Nyberg, A / Bäck, T / de Angelis, G / Doncel, M / Dudouet, J / Gottardo, A / Jurado, M / Ljungvall, J / Mengoni, D / Napoli, D R / Petrache, C M / Sohler, D / Timár, J / Barrientos, D / Bednarczyk, P / Benzoni, G / Birkenbach, B / Boston, A J / Boston, H C / Burrows, I / Charles, L / Ciemala, M / Crespi, F C L / Cullen, D M / Désesquelles, P / Domingo-Pardo, C / Eberth, J / Erduran, N / Ertürk, S / González, V / Goupil, J / Hess, H / Huyuk, T / Jungclaus, A / Korten, W / Lemasson, A / Leoni, S / Maj, A / Menegazzo, R / Million, B / Perez-Vidal, R M / Podolyak, Zs / Pullia, A / Recchia, F / Reiter, P / Saillant, F / Salsac, M D / Sanchis, E / Simpson, J / Stezowski, O / Theisen, Ch / Zielińska, M

    Physical review letters

    2020  Volume 124, Issue 6, Page(s) 62501

    Abstract: The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N=Z) nuclide _{44}^{88}Ru_{44} has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector ... ...

    Abstract The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N=Z) nuclide _{44}^{88}Ru_{44} has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in ^{88}Ru were populated via the ^{54}Fe(^{36}Ar,2nγ)^{88}Ru^{*} fusion-evaporation reaction at the Grand Accélérateur National d'Ions Lourds (GANIL) accelerator complex. The observed γ-ray cascade is assigned to ^{88}Ru using clean prompt γ-γ-2-neutron coincidences in anticoincidence with the detection of charged particles, confirming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N>Z nuclides. The direct observation of such a "delayed" rotational alignment in a deformed N=Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.
    Language English
    Publishing date 2020-02-28
    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.124.062501
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Proton Shell Evolution below ^{132}Sn: First Measurement of Low-Lying β-Emitting Isomers in ^{123,125}Ag.

    Chen, Z Q / Li, Z H / Hua, H / Watanabe, H / Yuan, C X / Zhang, S Q / Lorusso, G / Nishimura, S / Baba, H / Browne, F / Benzoni, G / Chae, K Y / Crespi, F C L / Doornenbal, P / Fukuda, N / Gey, G / Gernhäuser, R / Inabe, N / Isobe, T /
    Jiang, D X / Jungclaus, A / Jung, H S / Jin, Y / Kameda, D / Kim, G D / Kim, Y K / Kojouharov, I / Kondev, F G / Kubo, T / Kurz, N / Kwon, Y K / Li, X Q / Lou, J L / Lane, G J / Li, C G / Luo, D W / Montaner-Pizá, A / Moschner, K / Niu, C Y / Naqvi, F / Niikura, M / Nishibata, H / Odahara, A / Orlandi, R / Patel, Z / Podolyák, Zs / Sumikama, T / Söderström, P-A / Sakurai, H / Schaffner, H / Simpson, G S / Steiger, K / Suzuki, H / Taprogge, J / Takeda, H / Vajta, Zs / Wang, H K / Wu, J / Wendt, A / Wang, C G / Wu, H Y / Wang, X / Wu, C G / Xu, C / Xu, Z Y / Yagi, A / Ye, Y L / Yoshinaga, K

    Physical review letters

    2019  Volume 122, Issue 21, Page(s) 212502

    Abstract: The β-delayed γ-ray spectroscopy of neutron-rich ^{123,125}Ag isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN, and the long-predicted 1/2^{-} β-emitting isomers in ^{123,125}Ag are identified for the first time. With the new ... ...

    Abstract The β-delayed γ-ray spectroscopy of neutron-rich ^{123,125}Ag isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN, and the long-predicted 1/2^{-} β-emitting isomers in ^{123,125}Ag are identified for the first time. With the new experimental results, the systematic trend of energy spacing between the lowest 9/2^{+} and 1/2^{-} levels is extended in Ag isotopes up to N=78, providing a clear signal for the reduction of the Z=40 subshell gap in Ag towards N=82. Shell-model calculations with the state-of-the-art V_{MU} plus M3Y spin-orbit interaction give a satisfactory description of the low-lying states in ^{123,125}Ag. The tensor force is found to play a crucial role in the evolution of the size of the Z=40 subshell gap. The observed inversion of the single-particle levels around ^{123}Ag can be well interpreted in terms of the monopole shift of the π1g_{9/2} orbitals mainly caused by the increasing occupation of ν1h_{11/2} orbitals.
    Language English
    Publishing date 2019-07-08
    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.122.212502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Shape Coexistence at Zero Spin in ^{64}Ni Driven by the Monopole Tensor Interaction.

    Mărginean, N / Little, D / Tsunoda, Y / Leoni, S / Janssens, R V F / Fornal, B / Otsuka, T / Michelagnoli, C / Stan, L / Crespi, F C L / Costache, C / Lica, R / Sferrazza, M / Turturica, A / Ayangeakaa, A D / Auranen, K / Barani, M / Bender, P C / Bottoni, S /
    Boromiza, M / Bracco, A / Călinescu, S / Campbell, C M / Carpenter, M P / Chowdhury, P / Ciemała, M / Cieplicka-Oryǹczak, N / Cline, D / Clisu, C / Crawford, H L / Dinescu, I E / Dudouet, J / Filipescu, D / Florea, N / Forney, A M / Fracassetti, S / Gade, A / Gheorghe, I / Hayes, A B / Harca, I / Henderson, J / Ionescu, A / Iskra, Ł W / Jentschel, M / Kandzia, F / Kim, Y H / Kondev, F G / Korschinek, G / Köster, U / Krishichayan / Krzysiek, M / Lauritsen, T / Li, J / Mărginean, R / Maugeri, E A / Mihai, C / Mihai, R E / Mitu, A / Mutti, P / Negret, A / Niţă, C R / Olăcel, A / Oprea, A / Pascu, S / Petrone, C / Porzio, C / Rhodes, D / Seweryniak, D / Schumann, D / Sotty, C / Stolze, S M / Şuvăilă, R / Toma, S / Ujeniuc, S / Walters, W B / Wu, C Y / Wu, J / Zhu, S / Ziliani, S

    Physical review letters

    2020  Volume 125, Issue 10, Page(s) 102502

    Abstract: The low-spin structure of the semimagic ^{64}Ni nucleus has been considerably expanded: combining four experiments, several 0^{+} and 2^{+} excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model ... ...

    Abstract The low-spin structure of the semimagic ^{64}Ni nucleus has been considerably expanded: combining four experiments, several 0^{+} and 2^{+} excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0^{+} excitation is located at a surprisingly high energy (3463 keV), with a collective 2^{+} state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N=40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N.
    Language English
    Publishing date 2020-07-15
    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.125.102502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Multifaceted Quadruplet of Low-Lying Spin-Zero States in ^{66}Ni: Emergence of Shape Isomerism in Light Nuclei.

    Leoni, S / Fornal, B / Mărginean, N / Sferrazza, M / Tsunoda, Y / Otsuka, T / Bocchi, G / Crespi, F C L / Bracco, A / Aydin, S / Boromiza, M / Bucurescu, D / Cieplicka-Oryǹczak, N / Costache, C / Călinescu, S / Florea, N / Ghiţă, D G / Glodariu, T / Ionescu, A /
    Iskra, Ł W / Krzysiek, M / Mărginean, R / Mihai, C / Mihai, R E / Mitu, A / Negreţ, A / Niţă, C R / Olăcel, A / Oprea, A / Pascu, S / Petkov, P / Petrone, C / Porzio, G / Şerban, A / Sotty, C / Stan, L / Ştiru, I / Stroe, L / Şuvăilă, R / Toma, S / Turturică, A / Ujeniuc, S / Ur, C A

    Physical review letters

    2017  Volume 118, Issue 16, Page(s) 162502

    Abstract: A search for shape isomers in the ^{66}Ni nucleus was performed, following old suggestions of various mean-field models and recent ones, based on state-of-the-art Monte Carlo shell model (MCSM), all considering ^{66}Ni as the lightest nuclear system with ...

    Abstract A search for shape isomers in the ^{66}Ni nucleus was performed, following old suggestions of various mean-field models and recent ones, based on state-of-the-art Monte Carlo shell model (MCSM), all considering ^{66}Ni as the lightest nuclear system with shape isomerism. By employing the two-neutron transfer reaction induced by an ^{18}O beam on a ^{64}Ni target, at the sub-Coulomb barrier energy of 39 MeV, all three lowest-excited 0^{+} states in ^{66}Ni were populated and their γ decay was observed by γ-coincidence technique. The 0^{+} states lifetimes were assessed with the plunger method, yielding for the 0_{2}^{+}, 0_{3}^{+}, and 0_{4}^{+} decay to the 2_{1}^{+} state the B(E2) values of 4.3, 0.1, and 0.2 Weisskopf units (W.u.), respectively. MCSM calculations correctly predict the existence of all three excited 0^{+} states, pointing to the oblate, spherical, and prolate nature of the consecutive excitations. In addition, they account for the hindrance of the E2 decay from the prolate 0_{4}^{+} to the spherical 2_{1}^{+} state, although overestimating its value. This result makes ^{66}Ni a unique nuclear system, apart from ^{236,238}U, in which a retarded γ transition from a 0^{+} deformed state to a spherical configuration is observed, resembling a shape-isomerlike behavior.
    Language English
    Publishing date 2017-04-21
    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.118.162502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Study of shape transition in the neutron-rich Os isotopes

    John P.R. / Modamio V. / Valiente-Dobón J.J. / Mengoni D. / Gottardo A. / Bazzacco D. / Lunardi S. / Alexander T. / Angelis G. de / Ashwood N. / Barr M. / Bizzeti P.G. / Bizzeti-Sona A.M. / Bottoni S. / Bowry M. / Bracco A. / Browne F. / Bunce M. / Gadea A. /
    Camera F. / Corradi L. / Crespi F.C.L. / Farnea E. / Fioretto E. / Kokalova Tz. / Korten W. / Kuşoğlu A. / Lenzi S. / Leoni S. / Michelagnoli C. / Mijatović T. / Montagnoli G. / Montanari D. / Napoli D.R. / Podolyák Zs. / Pollarolo G. / Recchia F. / Roberts O.J. / Şahin E. / Salsac M.-D. / Scarlassara F. / Stefanini A.M. / Szilner S. / Ur C.A. / Walshe J. / Wheldon C.

    EPJ Web of Conferences, Vol 66, p

    2014  Volume 02057

    Abstract: The neutron-rich isotopes of tungsten, osmium and platinum have different shapes in their ground states and present also shape transitions phenomena. Spectroscopic information for these nuclei is scarce and often limited to the gamma rays from the decay ... ...

    Abstract The neutron-rich isotopes of tungsten, osmium and platinum have different shapes in their ground states and present also shape transitions phenomena. Spectroscopic information for these nuclei is scarce and often limited to the gamma rays from the decay of isomeric states. For the neutron-rich even-even osmium isotopes 194Os and 198Os, a shape transition between a slightly prolate deformed to an oblate deformed ground state was deduced from the observed level schemes. For the even-even nucleus lying in between, 196Os, no gamma ray transition is known. In order to elucidate the shape transition and to test the nuclear models describing it, this region was investigated through gamma-ray spectroscopy using the AGATA demonstrator and the large acceptance heavy-ion spectrometer PRISMA at LNL, Italy. A two-nucleon transfer from a 198Pt target to a stable 82Se beam was utilized to populate medium-high spin states of 196Os. The analysis method and preliminary results, including the first life-time measurement of isomeric states with AGATA, are presented.
    Keywords Physics ; QC1-999 ; Science ; Q
    Subject code 530 ; 541
    Language English
    Publishing date 2014-03-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Study of the γ decay of high-lying states in 208Pb via inelastic scattering of 17O ions

    Crespi F.C.L. / Kmiecik M. / Bracco A. / Leoni S. / Maj A. / Benzoni G. / Blasi N. / Boiano C. / Bottoni S. / Brambilla S. / Camera F. / Ceruti S. / Giaz A. / Million B. / Morales A.I. / Nicolini R. / Pellegri L. / Riboldi S. / Vandone V. /
    Wieland O. / Bednarczyk P. / Ciemala M. / Grebosz J. / Krzysiek M. / Mazurek K. / Zieblinski M. / Bazzacco D. / Bellato M. / Birkenbach B. / Bortolato D. / Calore E. / Angelis G. De / Farnea E. / Gadea A. / Görgen A. / Gottardo A. / Isocrate R. / Lenzi S. / Lunardi S. / Mengoni D. / Michelagnoli C. / Molini P. / Napoli D.R. / Recchia F. / Sahin E. / Siebeck B. / Siem S. / Ur C. / Dobon J.J. Valiente

    EPJ Web of Conferences, Vol 66, p

    2014  Volume 02023

    Abstract: A measurement of the high-lying states in 208Pb has been made using 17O beams at 20 MeV/u. The gamma decay following inelastic excitation was measured with the detector system AGATA Demonstrator based on segmented HPGe detectors, coupled to an array of ... ...

    Abstract A measurement of the high-lying states in 208Pb has been made using 17O beams at 20 MeV/u. The gamma decay following inelastic excitation was measured with the detector system AGATA Demonstrator based on segmented HPGe detectors, coupled to an array of large volume LaBr3:Ce scintillators and to an array of Si detectors. Preliminary results in comparison with (γ,γ’) data, for states in the 5-8 MeV energy interval, are presented.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-03-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: The (n,γ) campaigns at EXILL

    Jolie J. / Régis J.-M. / Wilmsen D. / Ahmed S. / Pfeiffer M. / Saed-Samii N. / Warr N. / Blanc A. / Jentschel M. / Köster U. / Mutti P. / Soldner T. / Simpson G. / De France G. / Urban W. / Drouet F. / Vancraeyenest A. / Baczyk P. / Czerwinski M. /
    Korgul A. / Mazzocchi C. / Rzaca-Urban T. / Bruce A. / Roberts O.J. / Fraile L.M. / Mach H. / Paziy V. / Ignatov A. / Ilieva S. / Kröll Th. / Scheck M. / Thürauf M. / Ivanova D. / Kisyov S. / Lalkovski S. / Podolyák Zs. / Regan P.H. / Korten W. / Zielinska M. / Salsac M.D. / Habs D. / Thirolf P.G. / Ur C. A. / Bernards C. / Casten R.F. / Cooper N. / Werner V. / Cakirli R.B. / Leoni S. / Benzoni G. / Bocchi G. / Bottoni S. / Crespi F.C.L. / Fornal B. / Cieplicka N. / Szpak B. / Petrache C.M. / Leguillon R. / John R. / Lorenz C. / Massarczyk R. / Schwengner R. / Curien D. / Lozeva R. / Sengele L. / Marginean N. / Lica R.

    EPJ Web of Conferences, Vol 93, p

    2015  Volume 01014

    Abstract: At the PF1B cold neutron beam line at the Institut Laue Langevin, the EXILL array consisting of EXOGAM, GASP and ILL-Clover detectors was used to perform (n,γ) measurements at very high coincidence rates. About ten different reactions were measured in ... ...

    Abstract At the PF1B cold neutron beam line at the Institut Laue Langevin, the EXILL array consisting of EXOGAM, GASP and ILL-Clover detectors was used to perform (n,γ) measurements at very high coincidence rates. About ten different reactions were measured in autumn 2012 using a highly collimated cold neutron beam. In spring 2013, the EXOGAM array was combined with 16 LaBr3(Ce) scintillators in the EXILL&FATIMA campaign for the measurement of lifetimes using the generalised centroid difference method. We report on the properties of the set-ups and present first results from both campaigns.
    Keywords Science ; Q ; Physics ; QC1-999
    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)

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  10. Article ; Online: β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N=82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process.

    Lorusso, G / Nishimura, S / Xu, Z Y / Jungclaus, A / Shimizu, Y / Simpson, G S / Söderström, P-A / Watanabe, H / Browne, F / Doornenbal, P / Gey, G / Jung, H S / Meyer, B / Sumikama, T / Taprogge, J / Vajta, Zs / Wu, J / Baba, H / Benzoni, G /
    Chae, K Y / Crespi, F C L / Fukuda, N / Gernhäuser, R / Inabe, N / Isobe, T / Kajino, T / Kameda, D / Kim, G D / Kim, Y-K / Kojouharov, I / Kondev, F G / Kubo, T / Kurz, N / Kwon, Y K / Lane, G J / Li, Z / Montaner-Pizá, A / Moschner, K / Naqvi, F / Niikura, M / Nishibata, H / Odahara, A / Orlandi, R / Patel, Z / Podolyák, Zs / Sakurai, H / Schaffner, H / Schury, P / Shibagaki, S / Steiger, K / Suzuki, H / Takeda, H / Wendt, A / Yagi, A / Yoshinaga, K

    Physical review letters

    2015  Volume 114, Issue 19, Page(s) 192501

    Abstract: The β-decay half-lives of 110 neutron-rich isotopes of the elements from _{37}Rb to _{50}Sn were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new ... ...

    Abstract The β-decay half-lives of 110 neutron-rich isotopes of the elements from _{37}Rb to _{50}Sn were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new data have direct implications for r-process calculations and reinforce the notion that the second (A≈130) and the rare-earth-element (A≈160) abundance peaks may result from the freeze-out of an (n,γ)⇄(γ,n) equilibrium. In such an equilibrium, the new half-lives are important factors determining the abundance of rare-earth elements, and allow for a more reliable discussion of the r process universality. It is anticipated that universality may not extend to the elements Sn, Sb, I, and Cs, making the detection of these elements in metal-poor stars of the utmost importance to determine the exact conditions of individual r-process events.
    Language English
    Publishing date 2015-05-15
    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.114.192501
    Database MEDical Literature Analysis and Retrieval System OnLINE

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