Thermal neutron activation cross section for 48Ca

被引：0
|
作者：
Zahn, Guilherme S. [1 ]
Zamboni, Cibele B. [1 ]
Oliveira, Laura C. [1 ]
Genezini, Frederico A. [2 ]
机构：
[1] IPEN CNEN SP, CP 11049, BR-05422970 Sao Paulo, Brazil
[2] Centro Reg Ciencias Nucleares, CNEN PE, Sao Paulo, Brazil
来源：
INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY, VOL 2, PROCEEDINGS | 2008年
关键词：
D O I：
10.1051/ndata:07525
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
In this work several certified standard samples with very well-determined Calcium amounts were irradiated in the IEA-R1 nuclear reactor, under a thermal neutron flux of similar to 10(12) n . cm(-2) . s(-1). The samples were then analyzed in a high-resolution gamma spectrometer in order to determine the amount of Ca-49 produced in the sample which, in turn, is directly proportional to the thermal neutron absorption cross section for Ca-48. These results allowed the determination of this cross section with an uncertainty that's 6 x lower than the compiled value and approximately half the uncertainty of the best value found in the literature, thus improving the results that can be obtained when measuring Calcium via semi-parametric Neutron Activation Analysis.
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页码：1263 / +
页数：2
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