The isovector imaginary neutron potential: A key ingredient for the r-process nucleosynthesis

被引:40
|
作者
Goriely, S.
Delaroche, J.-P.
机构
[1] Univ Libre Brussels, Inst Astron & Astrophys, Brussels, Belgium
[2] CEA, DAM Ile De France, DPTA, Serv Phys, F-91680 Bruyeres Le Chatel, France
关键词
neutron optical potential; Hauser-Feshbach cross section; r-process;
D O I
10.1016/j.physletb.2007.07.046
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The isovector contribution to the imaginary component of the microscopic optical model potential is adjusted on experimental neutron strength function data. Within the Bruckner-Hartree-Fock approximation of Jeukenne-Lejeune-Mahaux, it is shown that experimental data favours a strong isovector component that can have a drastic impact on the radiative neutron capture cross section for neutron-rich nuclei. If confirmed, this result strongly inhibits the resonant capture by exotic nuclei, so that the traditional r-process picture of the fast neutron captures during the nucleosynthesis r-process needs to be revisited in depth. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:178 / 183
页数:6
相关论文
共 50 条
  • [41] Neutrino capture and r-process nucleosynthesis
    Meyer, BS
    McLaughlin, GC
    Fuller, GM
    PHYSICAL REVIEW C, 1998, 58 (06): : 3696 - 3710
  • [42] Neutrino capture and r-process nucleosynthesis
    Meyer, BS
    INTERSECTIONS BETWEEN PARTICLE AND NUCLEAR PHYSICS - 6TH CONFERENCE, 1997, (412): : 992 - 997
  • [43] R-process Nucleosynthesis in Supernova Explosion
    Saruwatari, M.
    Hashimoto, M.
    Kotake, K.
    Yamada, S.
    FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS (FINUSTAR 3), 2011, 1377 : 420 - 422
  • [44] β-delayed Fission in r-process Nucleosynthesis
    Mumpower, M. R.
    Kawano, T.
    Sprouse, T. M.
    Vassh, N.
    Holmbeck, E. M.
    Surman, R.
    Moller, P.
    ASTROPHYSICAL JOURNAL, 2018, 869 (01):
  • [45] Fission fragment distributions and their impact on the r-process nucleosynthesis in neutron star mergers
    Lemaitre, J-F
    Goriely, S.
    Bauswein, A.
    Janka, H-T
    PHYSICAL REVIEW C, 2021, 103 (02)
  • [46] Gamma Rays from Kilonova: A Potential Probe of r-process Nucleosynthesis
    Korobkin, Oleg
    Hungerford, Aimee M.
    Fryer, Christopher L.
    Mumpower, Matthew R.
    Wendell Misch, G.
    Sprouse, Trevor M.
    Lippuner, Jonas
    Surman, Rebecca
    Couture, Aaron J.
    Bloser, Peter F.
    Shirazi, Farzane
    Even, Wesley P.
    Vestrand, W. Thomas
    Miller, Richard S.
    ASTROPHYSICAL JOURNAL, 2020, 889 (02):
  • [47] Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
    Pian, E.
    D'Avanzo, P.
    Enetti, S. B.
    Branchesi, M.
    Rocato, E. B.
    Campana, S.
    Cappellaro, E.
    Covino, S.
    D'Elia, V.
    Fynbo, J. P. U.
    Getman, F.
    Ghirlanda, G.
    Ghisellini, G.
    Grado, A.
    Greco, G.
    Hjorth, J.
    Kouveliotou, C.
    Levan, A.
    Limatola, L.
    Alesani, D. M.
    Azzali, P. A. M.
    Elandri, A. M.
    Oller, P. M.
    Icastro, L. N.
    Palazzi, E.
    Piranomonte, S.
    Rossi, A.
    Salafia, O. S.
    Selsing, J.
    Stratta, G.
    Tanaka, M.
    Tanvir, N. R.
    Tomasella, L.
    Watson, D.
    Yang, S.
    Amati, L.
    Antonelli, L. A.
    Ascenzi, S.
    Ernardini, M. G. B.
    Boer, M.
    Ufano, F. B.
    Ulgarelli, A. B.
    Capaccioli, M.
    Casella, P.
    Castro-Tirado, A. J.
    Chassande-Mottin, E.
    Ciolfi, R.
    Copperwheat, C. M.
    Dadina, M.
    De Cesare, G.
    NATURE, 2017, 551 (7678) : 67 - +
  • [48] The neutrino-induced neutron source in helium shell and r-process nucleosynthesis
    Nadyozhin, DK
    Panov, IV
    Blinnikov, SI
    ASTRONOMY & ASTROPHYSICS, 1998, 335 (01) : 207 - 217
  • [49] Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
    E. Pian
    P. D’Avanzo
    S. Benetti
    M. Branchesi
    E. Brocato
    S. Campana
    E. Cappellaro
    S. Covino
    V. D’Elia
    J. P. U. Fynbo
    F. Getman
    G. Ghirlanda
    G. Ghisellini
    A. Grado
    G. Greco
    J. Hjorth
    C. Kouveliotou
    A. Levan
    L. Limatola
    D. Malesani
    P. A. Mazzali
    A. Melandri
    P. Møller
    L. Nicastro
    E. Palazzi
    S. Piranomonte
    A. Rossi
    O. S. Salafia
    J. Selsing
    G. Stratta
    M. Tanaka
    N. R. Tanvir
    L. Tomasella
    D. Watson
    S. Yang
    L. Amati
    L. A. Antonelli
    S. Ascenzi
    M. G. Bernardini
    M. Boër
    F. Bufano
    A. Bulgarelli
    M. Capaccioli
    P. Casella
    A. J. Castro-Tirado
    E. Chassande-Mottin
    R. Ciolfi
    C. M. Copperwheat
    M. Dadina
    G. De Cesare
    Nature, 2017, 551 : 67 - 70
  • [50] r-process nucleosynthesis from matter ejected in binary neutron star mergers
    Bovard, Luke
    Martin, Dirk
    Guercilena, Federico
    Arcones, Almudena
    Rezzolla, Luciano
    Korobkin, Oleg
    PHYSICAL REVIEW D, 2017, 96 (12)