Thermal-Neutron Transmission Through Plane Cadmium Covers*
作者:
DeJurenJ. A.,
PaschallR. K.,
期刊:
Nuclear Science and Engineering
(Taylor Available online 1964)
卷期:
Volume 20,
issue 3
页码: 314-317
ISSN:0029-5639
年代: 1964
DOI:10.13182/NSE64-A19575
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractThe transmission of thermal neutrons through cadmium covers as a function of cadmium thickness was measured in a graphite stack at various heights above the thermal column of the AE-6 water-boiler reactor. Both dysprosium-alloy and indium-alloy foils were used as detectors and were beta-counted. Because the thermal flux incident on a cadmium cover is depressed relative to the flux incident on a bare foil, a foil with a thick cadmium cover on one side only was used for the zero-thickness measurement and its activity was doubled. The resultant thermal activities for a thin detector were consistent with the exponential integral 0.9302(dΣα) a cadmium thickness greater than 0.025 cm, whereand a value of 2450 barns was used for the absorption cross section of cadmium.
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