| Authors | M. zahedifar, M. Jafarizadeh, E. Sadeghi, H shakhusi |
|---|---|
| Journal | J. of Nuclear SCi. and Tech. (2011) 56, 8-14 |
| Presented by | بله |
| Paper Type | Full Paper |
| Published At | ۲۰۱۱ |
| Journal Grade | Scientific - research |
| Journal Type | Typographic |
| Journal Country | Iran, Islamic Republic Of |
Abstract
In this work the ratio of the 4th peak to the 5th peak of a LiF:Mg,Ti (TLD-600) thermoluminescence dosimeter has been used to estimate the gamma dose in a mixed neutron-gamma radiation field. The samples were first exposed to the known neutron and gamma doses from Am-Be and 137Cs sources. Then, the contribution of the gamma dose in the mixed field was changed from 20% to 52% of the total dose. For this purpose by employing a computer program based on Levenberg-Marquart algorithm, and by using thermoluminescence general order model for the glow profile deconvolution, the ratio of the 4th to 5th peaks was determined. Finally, the peak ratios have been related to the contribution of the gamma dose in the mixed neutron gamma radiation field.