The Application of Full Spectrum Analysis to NaI(Tl) Gamma Spectrometry for the Determination of Burial Dose Rates
Publié en ligne: 31 déc. 2021
Pages: 161 - 170
Reçu: 15 févr. 2019
Accepté: 28 oct. 2019
© 2019 Minqiang Bu et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Average ratios of ACNaI/ACHPGe and DRNaI/DRHPGe (n = 20).
|
Average ratio |
40K |
0.995 ± 0.005 |
238U |
0.984 ± 0.005 |
232Th |
1.005 ± 0.006 |
Total dose rate |
0.993 ± 0.004 |
Updated 40K, 238U and 232Th activity concentration per ppm for dose rate derivation.
Radionuclide |
Activity concentration (Bq·kg−1) |
Uncertainty (Bq·kg−1) |
40K |
317 |
3 |
238U |
12.922 |
0.025 |
232Th |
4.061 |
0.029 |
Comparison of MDLs (Bq·kg−1) from different studies.
Nuclide |
NaI(Tl) spectrometer (Sample weight: 0.23 kg) |
HPGe spectrometer (Sample weight: 0.25 kg) |
FSA (This study) |
3-Window (Bu et al., 2018) |
(Murray et al., 2018) |
40K |
4.8 |
21 |
0.6 |
238U |
0.4 |
4.0 |
0.04 |
232Th |
0.3 |
2.1 |
0.03 |