S-PROCESS ABUNDANCES FOR TE-122, TE-123, TE-124

被引:8
作者
DELAETER, JR
机构
[1] Department of Applied Physics, Curtin University of Technology, Perth, WA 6001
关键词
NUCLEAR REACTIONS; NUCLEOSYNTHESIS; ABUNDANCES;
D O I
10.1086/174770
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The three s-only isotopes of tellurium, Te-122,Te-123,Te-124, provide a unique opportunity to investigate s-process systematics, including the ''local approximation,'' the estimation of the temperature and neutron density during helium burning in red giant stars, and p-process contributions in the mass region. Recent accurate measurements of the neutron capture cross sections of key isotopes in this mass region have enabled an improved analysis of the s-process flow. The absence of absolute isotope abundance determinations for tellurium introduces additional uncertainties into the s-process calculations and constrains the conclusions which can be made with respect to p-process contributions for the tellurium isotopes. An improved set of isotopic data for tellurium is provided as a basis for future s-process analyses until such time as the absolute isotopic composition of tellurium is established.
引用
收藏
页码:695 / 697
页数:3
相关论文
共 11 条
  • [11] NEUTRON-CAPTURE IN TE-122, TE-123, TE-124 - CRITICAL TEST FOR S-PROCESS STUDIES
    WISSHAK, K
    VOSS, F
    KAPPELER, F
    REFFO, G
    [J]. PHYSICAL REVIEW C, 1992, 45 (05): : 2470 - 2486