Moments Method Calculation of Buildup Factors for Point Isotropic Monoenergetic Gamma-Ray Sources at Depths Greater than 20 Mean-Free-Paths
作者:
MorrisE. E.,
期刊:
Nuclear Science and Engineering
(Taylor Available online 1973)
卷期:
Volume 50,
issue 1
页码: 32-37
ISSN:0029-5639
年代: 1973
DOI:10.13182/NSE73-A22585
出版商: Taylor&Francis
数据来源: Taylor
摘要:
A method of extending moments method calculations for monoenergetic, point isotropic gamma ray sources to depths of approximately 50 mean-free-paths is described. Sample calculations are given for water and aluminum. A method of error analysis recently developed by Spencer suggests that for the range from 10 to∼50 mean-free-paths, the errors associated with the reconstruction of the flux from moments are generally<1%. Comparisons are made between the asymptotic, deep penetration trend of the calculated results and the trend predicted by a theory developed by Fano.
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