A dedicated empirical formula for γ-ray buildup factors for a point isotropic source in stratified shields
✍ Scribed by Uei-Tyng Lin; Shiang-Huei Jiang
- Book ID
- 103991142
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 872 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0969-806X
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✦ Synopsis
A dedicated empirical formula for evaluating ?-ray buildup factors of double-layered shields for a point isotropic source has been proposed for the first time by fitting it to the data of Monte Carlo calculations using EGS4 code. The calculated results from the present formula were compared with those using other empirical formulae. The extension of the present formula in the application for multilayered shields was tested for a number of combinations of stratified shields. By using infinite-medium buildup factors of single materials, the present formula will deliver buildup factors of stratified shields without suffering boundary effect instead of the ones of transmission type.