| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5499214 | Radiation Physics and Chemistry | 2017 | 11 Pages |
Abstract
A low level 226Ra analysis method for live fish was developed using a 4Ï NaI(Tl) gamma-ray spectrometer. In order to find out the best algorithm for accomplishing the lowest detection limit, the gamma-ray spectrum from a 226Ra point was collected and nine different methods were attempted for spectral analysis. The lowest detection limit of 0.99Â Bq for an hour counting occurred when the spectrum was integrated in the energy region of 50-2520Â keV. To extend 226Ra analysis to live fish, a Monte Carlo simulation model with a cylindrical fish in a water container was built using the MCNP code. From simulation results, the spatial distribution of the efficiency and the efficiency correction factor for the live fish model were determined. The MCNP model will be able to be conveniently modified when a different fish or container geometry is employed as fish grow up in real experiments.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Z. Chandani, W.V. Prestwich, S.H. Byun,