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Title: He3(α,γ)Be7 and H3(α,γ)Li7 astrophysical S factors from the no-core shell model with continuum

The 3He(α,γ)7Be and 3H(α,γ)7Li astrophysical S factors are calculated within the no-core shell model with continuum using a renormalized chiral nucleon–nucleon interaction. The 3He(α,γ)7Be astrophysical S factors agree reasonably well with the experimental data while the 3H(α,γ)7Li ones are overestimated. The seven-nucleon bound and resonance states and the α + 3He/3H elastic scattering are also studied and compared with experiment. Here, the low-lying resonance properties are rather well reproduced by our approach. At low energies, the s-wave phase shift, which is non-resonant, is overestimated.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. TRIUMF, Vancouver, BC (Canada)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Hokkaido Univ., Sapporo (Japan)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. Paris-Sud, Orsay Cedex (France); CEA, DAM, DIF, Arpajon (France)
  5. TRIUMF, Vancouver, BC (Canada); Univ. of Surrey, Surrey (United Kingdom)
Publication Date:
Report Number(s):
LLNL-JRNL-678557
Journal ID: ISSN 0370-2693
Grant/Contract Number:
AC52-07NA27344; SCW1158
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 757; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; nuclear physics; light-nuclei radiative captures; Ab initio calculation
OSTI Identifier:
1247077
Alternate Identifier(s):
OSTI ID: 1343010