Neutron capture rates near A=130 that effect a global change to the r-process abundance distribution

被引：73

作者：

Surman, R. ^{[1
]}

Beim, J. ^{[2
]}

McLaughlin, G. C. ^{[2
]}

Hix, W. R. ^{[3
]}

机构：

[1] Union Coll, Dept Phys, Schenectady, NY 12308 USA

[2] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[3] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW C | 2009年 / 79卷 / 04期

基金：

美国国家科学基金会;

关键词：

PROCESS NUCLEOSYNTHESIS; DRIVEN WINDS;

D O I：

10.1103/PhysRevC.79.045809

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We investigate the impact of neutron capture rates near the A = 130 peak on the r-process abundance pattern. We show that these capture rates can alter the abundances of individual nuclear species, not only in the region of A = 130 peak but also throughout the abundance pattern. We discuss in general the nonequilibrium processes that produce these abundance changes and determine which capture rates have the most significant impact.

引用

页数：5

共 11 条

[1] Influence of neutron capture rates in the rare earth region on the r-process abundance pattern
Mumpower, Matthew R.
McLaughlin, Gail C.
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PHYSICAL REVIEW C, 2012, 86 (03):
[2] Neutron capture on 130Sn during r-process freeze-out
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Blackmon, J. C.
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[3] Neutron-capture measurement candidates for the r-process in neutron star mergers
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[4] Sensitivity studies for the weak r process: neutron capture rates
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[5] Reconstructing Masses of Merging Neutron Stars from Stellar r-process Abundance Signatures
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[6] Corrections on the Distribution of Nuclei Due to Neutron Degeneracy and Its Effect on R-Process in Neutron Star Black Hole Mergers
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[7] The impact of uncertain nuclear masses near closed shells on the r-process abundance pattern
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[8] Neutron star binary orbits in their host potential: effect on early r-process enrichment
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[9] Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations
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[10] The Lanthanide Fraction Distribution in Metal-poor Stars: A Test of Neutron Star Mergers as the Dominant r-process Site
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