Gamma spectrum for a gamma calibration irradiator determined by Monte Carlo simulation
In surveying radiation fields, high-quality measurements depend on a number of factors, one of which is a high-quality calibration of the radiation survey instrument utilized in the measurement. The calibration, in turn, ultimately relies on a radiation field produced by a source or machine that is deemed appropriate for the type of field to be measured. This paper examines the spectral changes in a gamma calibration field due to radiation scattering from the shielding material surrounding the gamma source in a commercial {sup 137}Cs gamma irradiator. The scattered component of a {sup 137}Cs gamma calibration irradiator is examined using the Monte Carlo computer code MCNP. The particular design investigated is that of a 20-Ci {sup 137}Cs source housed in a J.L. Shepard model 28-8B gamma irradiator.
- OSTI ID:
- 89239
- Report Number(s):
- CONF-941102--
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 71; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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