Reproduce Buildup Factors Based on Geometrical Progression Formula

WU He-xi; LIU Yi-bao; YANG Bo; LIU Yu-juan; YANG Lei; QIN Guo-xiu

doi:10.7538/yzk.2010.44.06.0654

Atomic Energy Science and Technology > 2010 > 44(6): 654-659. > DOI: 10.7538/yzk.2010.44.06.0654

WU He-xi, LIU Yi-bao, YANG Bo, LIU Yu-juan, YANG Lei, QIN Guo-xiu. Reproduce Buildup Factors Based on Geometrical Progression Formula[J]. Atomic Energy Science and Technology, 2010, 44(6): 654-659. DOI: 10.7538/yzk.2010.44.06.0654

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Reproduce Buildup Factors Based on Geometrical Progression Formula

1.
Key Laboratory of Nuclear Resources and Environment, Ministry of Education, East China Institute of Technology, Nanchang 330013, China
2.
School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China

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Received Date: December 31, 1899
Revised Date: December 31, 1899

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Abstract

Geometrical progression formula of gamma-ray buildup factor was introduced by the physics principle of the buildup factor increasing with increasing penetration depth. Physical significance of each parameter was described. It was very difficult to write the geometrical progression fitting code for buildup factor, but steps of the fitting procedure were introduced by analyzing each parameter. The advantage of geometrical progression formula was proved by compared with fitting results of other actual expressions for several typical data of buildup factor. The formula can accurately reproduce the data within ±5% by fit the exposure buildup factor of some materials at different source energy, which is most commonly used.
- physics principle,
- geometrical progression,
- buildup factor,
- fitting

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