Photoneutron reaction cross section measurements on Mo94 and Zr90 relevant to the p -process nucleosynthesis
نویسندگان
چکیده
منابع مشابه
Sensitivity of Photoneutron Production to Perturbations in Cross-Section Data
The most recent release of photonuclear interaction data for Monte Carlo applications is the ENDF/B-VII library. While this current version offers several improvements over its predecessors, it does not address the observed, sometimes quite significant variance in the measured data. For instance, for U, the cross-section data in the ENDF/B-VII library is consistently larger than all measurement...
متن کاملAlpha induced reaction cross section measurements on 162Er for the astrophysical γ process
a r t i c l e i n f o a b s t r a c t The cross sections of the 162 Er(α, γ) 166 Yb and 162 Er(α, n) 165 Yb reactions have been measured for the first time. The radiative alpha capture reaction cross section was measured from E c.m. = 16.09 MeV down to E c.m. = 11.21 MeV, close to the astrophysically relevant region (which lies between 7.8 and 11.48 MeV at 3 GK stellar temperature). The 162 Er(...
متن کاملNp Cross Section for Big Bang Nucleosynthesis
The total cross sections for the radiative neutron capture on a proton, np → dγ, and its inverse reaction dγ → np are evaluated at the big bang nucleosynthesis (BBN) energies. We employ the effective field theory with dibaryon field to describe the two-nucleon reactions with external electromagnetic probe. Electromagnetic transition amplitudes are obtained up to next-to leading order. Our resul...
متن کاملCross-section measurements of the 86Kr(γ,n) reaction to probe the s-process branching at 85Kr.
We have carried out photodisintegration cross-section measurements on 86Kr using monoenergetic photon beams ranging from the neutron separation energy, S(n) = 9.86 MeV, to 13 MeV. We combine our experimental 86Kr(γ,n)85Kr cross section with results from our recent 86Kr(γ,γ') measurement below the neutron separation energy to obtain the complete nuclear dipole response of 86Kr. The new experime...
متن کاملSensitivity of P Process Nucleosynthesis to Nuclear Reaction Rates in a 25 Solar Mass Supernova Model
The astrophysical p process, which is responsible for the origin of the proton rich stable nuclei heavier than iron, was investigated using a full nuclear reaction network for a type II supernova explosion when the shock front passes through the O/Ne layer. Calculations were performed with a multi-layer model adopting the seed of a pre-explosion evolution of a 25 solar mass star. The reaction f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2019
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.99.025802