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2026年10期
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Neutron capture cross-section of indium from 1 eV to 1 MeV at the CSNS Back-n
Neutron capture cross-section of indium from 1 eV to 1 MeV at the CSNS Back-n
摘要
The cross-sections of the 113,115In(n,γ)reactions play critical roles in s-process nucleosynthesis and neutron resonance capture analysis for determining the elemental and isotopic composition of archeological and cultural heritage,and Ag-In-Cd control rods in commercial nuclear reactors.The neutron capture cross-sections of indium from 1 eV to 1 MeV were measured at the Back-n facility of the Chinese Spallation Neutron Source(CSNS)using the time-of-flight(TOF)method.In the resolved resonance region,the resonance parameters of113,115In were extracted using the R-muatrix code SAMMY from 1 eV to 2 keV.The inconsistencies between the available experimental data and the evaluated libraries were analyzed.In the unresolved resonance region,astrophysical Maxwellian-averaged cross-sections(MACSs)of the 113,115In(n,γ)reactions were calcu-lated over the temperature range relevant to s-process nucleosynthesis,based on the present averaged cross-sections.At a typical s-process temperature of kT=30 keV,the MACS of 115In(n,γ)is about 20％higher than the recommended value of KADoNiS v0.3,while showing better agreement with KADoNiS v1.0.
年，卷(期)：
2026, 37(10)
机标分类号：
TP393
TF803.2
TN91
在线出版日期：
2026年10月16日
