Determination of Solar System R-Process Abundances using ENDF/B-VIII.0 and TENDL-2015 libraries. (arXiv:2012.06728v2 [astro-ph.SR] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Pritychenko_B/0/1/0/all/0/1">Boris Pritychenko</a>
Recent multi-messenger detection of the binary neutron star merger (GW170817)
energized the astrophysical community and encouraged further research for
determination of nuclear physics observables. Comprehensive studies of atomic
nuclei in the cosmos provide an opportunity for investigating these
astrophysical phenomena and acquiring complementary information on stellar
nucleosynthesis processes that can be verified using the latest nuclear data.
Evaluated Nuclear Data File (ENDF) libraries contain complete collections of
reaction cross sections over the energy range relevant to astrophysics, fission
yields and decay data. These data collections have been used worldwide in
nuclear science, industry and national security applications. There is great
interest in exploring the ENDF/B-VIII.0 and TALYS Evaluated Nuclear Data
Library (TENDL-2015) for nuclear astrophysics purposes and comparing findings
with the Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
(KADoNiS).
The Maxwellian-averaged cross sections (MACS) and astrophysical reaction
rates have been calculated using the ENDF/B-VIII.0 and TENDL-2015 evaluated
data sets. The calculated cross sections were combined with the solar system
abundances and fitted using the classical model of stellar nucleosynthesis.
Astrophysical rapid- and slow-neutron capture, $r$- and $s$-process,
respectively, abundances were obtained from present data and compared with
available values. Further analysis of MACS reveals potential evaluated
libraries data deficiencies and a strong need for new measurements. The current
results demonstrate a large nuclear astrophysics potential of evaluated
libraries and mutually beneficial relations between nuclear industry and
research efforts.
Recent multi-messenger detection of the binary neutron star merger (GW170817)
energized the astrophysical community and encouraged further research for
determination of nuclear physics observables. Comprehensive studies of atomic
nuclei in the cosmos provide an opportunity for investigating these
astrophysical phenomena and acquiring complementary information on stellar
nucleosynthesis processes that can be verified using the latest nuclear data.
Evaluated Nuclear Data File (ENDF) libraries contain complete collections of
reaction cross sections over the energy range relevant to astrophysics, fission
yields and decay data. These data collections have been used worldwide in
nuclear science, industry and national security applications. There is great
interest in exploring the ENDF/B-VIII.0 and TALYS Evaluated Nuclear Data
Library (TENDL-2015) for nuclear astrophysics purposes and comparing findings
with the Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
(KADoNiS).
The Maxwellian-averaged cross sections (MACS) and astrophysical reaction
rates have been calculated using the ENDF/B-VIII.0 and TENDL-2015 evaluated
data sets. The calculated cross sections were combined with the solar system
abundances and fitted using the classical model of stellar nucleosynthesis.
Astrophysical rapid- and slow-neutron capture, $r$- and $s$-process,
respectively, abundances were obtained from present data and compared with
available values. Further analysis of MACS reveals potential evaluated
libraries data deficiencies and a strong need for new measurements. The current
results demonstrate a large nuclear astrophysics potential of evaluated
libraries and mutually beneficial relations between nuclear industry and
research efforts.
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