Abstract
An in situ detection method for beta-ray distribution was developed. The method uses the gamma-ray sensitivity difference between two scintillators: A cadmium-tungstate (CdWO4) scintillator and a plastic scintillator. The gamma-ray sensitivity ratios for several gamma-ray sources such as 137Cs, 60Co, 22Na, and 54Mn were experimentally characterized. The sensitivity ratio for 137Cs between the CdWO4 and plastic scintillators was 8 ± 0.32, while the sensitivity ratio for beta rays from 90Sr was 1.03 ± 0.006. The beta-ray contributions to the total counts can be evaluated using this characteristic. A combined beta-ray and gamma-ray source was prepared, and its beta-ray distribution was successfully obtained using the proposed method.
| Original language | English |
|---|---|
| Pages (from-to) | 903-908 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Nuclear Science |
| Volume | 65 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2018 |
| Externally published | Yes |
Funding
Manuscript received September 8, 2017; revised November 14, 2017; accepted January 3, 2018. Date of publication January 17, 2018; date of current version March 14, 2018. This work was supported in part by the “Development of the Beta-Ray Distribution Measurement Technology of the Site” through the Ministry of Education of the Republic of Korea and Korea Atomic Energy Research Institute under Grant KAERI-2015-2015M2A8A5022235, in part by the Industrial Technology Innovation Program (Real-Time Underwater Tritium Monitoring Technology by Electrolysis) through the Korea Institute of Energy Technology Evaluation and Planning under Grant 2016520101340, and in part by the National Research Foundation of Korea through the Korean Government (MSIP: Ministry of Science, ICT and Future Planning) under Grant 2016M2B2B1945083.
Keywords
- Beta-ray detectors
- cadmium-tungstate (CdWO4)
- discrimination
- gamma-ray sensitivity
- plastic scintillator