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Photoneutron cross sections for neodymium isotopes : toward a unified understanding of (γ,n) and (n,γ) reactions in the rare earth region

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Abstract
Photoneutron cross sections were measured for five stable Nd isotopes, Nd-143,Nd-144,Nd-145,Nd-146,Nd-148, near neutron threshold with highly monochromatic laser-Compton scattering gamma rays. The photoneutron data were compared with the calculations performed with the TALYS reaction code with inputs of the Skyrme Hartree-Fock-Bogoliubov (HFB) plus quasi-particle random phase approximation (QRPA) model and the axially symmetric deformed Gogny HFB plus QRPA model of E1 gamma-ray strength. Using the gamma-ray strength function constrained by the present photoneutron data, a thorough analysis of the reverse (n, gamma) cross sections is made. Radiative neutron capture cross sections for an s-process branching-point nucleus in the rare earth region, Nd-147 with the half-life 10.98 d, are deduced with the gamma-ray strength function method. The impact of the newly evaluated Nd-147(n, gamma)Nd-148 cross section on s-process nucleosynthesis is discussed.
Keywords
GIANT DIPOLE RESONANCE, STELLAR NEUTRON-CAPTURE, AGB STARS, NUCLEAR-DATA, S-PROCESS, NUCLEOSYNTHESIS, ASTROPHYSICS, PHOTONS, LIBRARY, SCIENCE

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Chicago
Nyhus, H-T, T Renstrøm, H Utsunomiya, S Goriely, DM Filipescu, I Gheorghe, O Tesileanu, et al. 2015. “Photoneutron Cross Sections for Neodymium Isotopes : Toward a Unified Understanding of (γ,n) and (n,γ) Reactions in the Rare Earth Region.” Physical Review C 91 (1).
APA
Nyhus, H.-T., Renstrøm, T., Utsunomiya, H., Goriely, S., Filipescu, D., Gheorghe, I., Tesileanu, O., et al. (2015). Photoneutron cross sections for neodymium isotopes : toward a unified understanding of (γ,n) and (n,γ) reactions in the rare earth region. PHYSICAL REVIEW C, 91(1).
Vancouver
1.
Nyhus H-T, Renstrøm T, Utsunomiya H, Goriely S, Filipescu D, Gheorghe I, et al. Photoneutron cross sections for neodymium isotopes : toward a unified understanding of (γ,n) and (n,γ) reactions in the rare earth region. PHYSICAL REVIEW C. 2015;91(1).
MLA
Nyhus, H-T, T Renstrøm, H Utsunomiya, et al. “Photoneutron Cross Sections for Neodymium Isotopes : Toward a Unified Understanding of (γ,n) and (n,γ) Reactions in the Rare Earth Region.” PHYSICAL REVIEW C 91.1 (2015): n. pag. Print.
@article{5831180,
  abstract     = {Photoneutron cross sections were measured for five stable Nd isotopes, Nd-143,Nd-144,Nd-145,Nd-146,Nd-148, near neutron threshold with highly monochromatic laser-Compton scattering gamma rays. The photoneutron data were compared with the calculations performed with the TALYS reaction code with inputs of the Skyrme Hartree-Fock-Bogoliubov (HFB) plus quasi-particle random phase approximation (QRPA) model and the axially symmetric deformed Gogny HFB plus QRPA model of E1 gamma-ray strength. Using the gamma-ray strength function constrained by the present photoneutron data, a thorough analysis of the reverse (n, gamma) cross sections is made. Radiative neutron capture cross sections for an s-process branching-point nucleus in the rare earth region, Nd-147 with the half-life 10.98 d, are deduced with the gamma-ray strength function method. The impact of the newly evaluated Nd-147(n, gamma)Nd-148 cross section on s-process nucleosynthesis is discussed.},
  articleno    = {015808},
  author       = {Nyhus, H-T and Renstr{\o}m, T and Utsunomiya, H and Goriely, S and Filipescu, DM and Gheorghe, I and Tesileanu, O and Glodariu, T and Shima, T and Takahisa, K and Miyamoto, S and Lui, Y-W and Hilaire, S and P{\'e}ru, S and Martini, Marco and Siess, L and Koning, AJ},
  issn         = {0556-2813},
  journal      = {PHYSICAL REVIEW C},
  keyword      = {GIANT DIPOLE RESONANCE,STELLAR NEUTRON-CAPTURE,AGB STARS,NUCLEAR-DATA,S-PROCESS,NUCLEOSYNTHESIS,ASTROPHYSICS,PHOTONS,LIBRARY,SCIENCE},
  language     = {eng},
  number       = {1},
  pages        = {7},
  title        = {Photoneutron cross sections for neodymium isotopes : toward a unified understanding of (\ensuremath{\gamma},n) and (n,\ensuremath{\gamma}) reactions in the rare earth region},
  url          = {http://dx.doi.org/10.1103/PhysRevC.91.015808},
  volume       = {91},
  year         = {2015},
}

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