γ- ray self-absorption of cylindrical fissile material

LOW ENERGY ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS

γ- ray self-absorption of cylindrical fissile material

HUANG Yong-Yi，

CHENG Yi-Ying，

TIAN Dong-Feng，

LU Fu-Quan，

YANG Fu-Jia

Nuclear Science and Techniques

Vol.16, No.1

pp.17-24

Published in print 01 Feb 2005

CLC：TL352,TL375.6

30900

The self-absorption of γ-ray emitted from cylindrical fissile materials, such as ²³⁵U and ²³⁹Pu, does not possess spherical symmetry. The analytical formulae of self-absorption for γ-ray throughout the cylinder have been obtained. The intensity of γ-ray is a function of γ-ray outgoing directions and cylindrical configurations, accordingly one can acquire the information about geometrical configuration of cylindrical fissile materials through multi-location measurements. Further more, the method is given in this article. The result can be applied to the fissile material safeguard, such as nuclear monitoring and verifying.

Fissile materialIsotopic compositionMulti-location measurementγ-ray self-absorption

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