Influence of nuclear mass uncertainties on radiative neutron-capture rates

2019 ◽  
Vol 100 (2) ◽  
Author(s):  
C. Ma ◽  
Z. Li ◽  
Z. M. Niu ◽  
H. Z. Liang
Keyword(s):  
Neutron Capture ◽  
Nuclear Mass ◽  
Radiative Neutron ◽  
Radiative Neutron Capture ◽  
Capture Rates

Universal origin of heavy elements

2021 ◽  
Author(s):  
Jose Orce ◽  
Balaram Dey ◽  
Cebo Ngwetsheni ◽  
Brenden Lesch ◽  
Andile Zulu ◽  
...  
Keyword(s):  
Binding Energy ◽  
Symmetry Energy ◽  
Neutron Capture ◽  
Decay Rates ◽  
Heavy Elements ◽  
Capture Process ◽  
Atomic Nuclei ◽  
Radiative Neutron ◽  
Radiative Neutron Capture ◽  
Semi Empirical

Abstract The abundance of heavy elements above iron through the rapid neutron capture process or r-process is intimately related to the competition between neutron capture and $\beta$ decay rates, which ultimately depends on the binding energy of atomic nuclei. The well-known Bethe-Weizsacker semi-empirical mass formula describes the binding energy of ground states in nuclei with temperatures of T~0 MeV, where the nuclear symmetry energy saturates between 23-26 MeV. Here we find a larger saturation energy of ~30 MeV for nuclei at T~0.7-1.3 MeV, which corresponds to the typical temperatures where seed elements are created during the cooling down of the ejecta following neutron-star mergers and collapsars. This large symmetry energy yields a reduction of the binding energy per nucleon for neutron-rich nuclei; hence, the close in of the neutron dripline, where nuclei become unbound. This finding constrains exotic paths in the nucleosynthesis of heavy elements -- as supported by microscopic calculations of radiative neutron-capture rates -- and further supports the universal origin of heavy elements, as inferred from the abundances in extremely metal-poor stars and meteorites.

scholarly journals Nonstatistical Effects in Radiative Neutron Capture

1974 ◽  
pp. 167-195 ◽  
Author(s):  
Said F. Mughabghab
Keyword(s):  
Neutron Capture ◽  
Radiative Neutron ◽  
Radiative Neutron Capture

scholarly journals Radiative neutron capture cross sections onLu176at DANCE

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
O. Roig ◽  
M. Jandel ◽  
V. Méot ◽  
E. M. Bond ◽  
T. A. Bredeweg ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Capture ◽  
Capture Cross ◽  
Radiative Neutron ◽  
Radiative Neutron Capture ◽  
Capture Cross Sections

scholarly journals A high-resolution Ge(Li) anti-compton spectrometer for radiative neutron capture spectroscopy

1967 ◽  
Vol 56 (2) ◽  
pp. 181-188 ◽  
Author(s):  
W. Michaelis ◽  
H. Küpfer
Keyword(s):  
High Resolution ◽  
Neutron Capture ◽  
Radiative Neutron ◽  
Radiative Neutron Capture

The (??SF) Method - Determination of Radiative Neutron Capture Cross Sections for Unstable Nuclei

2011 ◽  
Vol 59 (2(3)) ◽  
pp. 1713-1716 ◽  
Author(s):  
H. Utsunomiya ◽  
S. Goriely ◽  
H. Akimune ◽  
H. Harada ◽  
F. Kitatani ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Capture ◽  
Capture Cross ◽  
Unstable Nuclei ◽  
Radiative Neutron ◽  
Radiative Neutron Capture ◽  
Capture Cross Sections

scholarly journals Isomeric ratio measurements for the radiative neutron capture 176Lu(n,γ) at DANCE

2017 ◽  
Vol 146 ◽  
pp. 01009
Author(s):  
D. Denis-Petit ◽  
O. Roig ◽  
V. Méot ◽  
B. Morillon ◽  
P. Romain ◽  
...  
Keyword(s):  
Neutron Capture ◽  
Isomeric Ratio ◽  
Radiative Neutron ◽  
Radiative Neutron Capture

Radiative-neutron-capture gamma-ray analysis by a linear combination technique

1972 ◽  
Vol 102 (1) ◽  
pp. 61-72 ◽  
Author(s):  
A.B. Tanner ◽  
R.C. Bhargava ◽  
F.E. Senftle ◽  
J.M. Brinkerhoff
Keyword(s):  
Linear Combination ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Combination Technique ◽  
Radiative Neutron ◽  
Radiative Neutron Capture

An interference effect in the channel radiative neutron capture process

1983 ◽  
Vol 406 (1) ◽  
pp. 18-28 ◽  
Author(s):  
Y.K. Ho ◽  
M.A. Lone
Keyword(s):  
Neutron Capture ◽  
Interference Effect ◽  
Capture Process ◽  
Radiative Neutron ◽  
Radiative Neutron Capture
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