Published October 1, 2019 | Version v1
Journal article Metadata-only

Determination of minimum detectable activity for underwater radiation detection system

Creators

  • 1. Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon 34057 (Korea, Republic of)
  • 2. Deptartment of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141 (Korea, Republic of)
  • 3. Korea Institute of Civil Engineering and Building Technology, 283, Goyang-Daero, Ilsanseo-Gu, Goyang-Si, Gyeonggi 10223 (Korea, Republic of)

Description

An underwater 137Cs (662 keV) and 131I (364 keV) radioisotopes monitoring system has been developed using a 3'' × 3'' NaI(Tl) detector. To estimate the minimum detectable activity and Bq/L conversion factor, an experiment was first conducted with 68Ga (511 keV) in a water tank. For energy spectrum comparison, Monte Carlo simulations were performed for 68Ga, 137Cs, and 131I to determine the conversion factor. The minimum detectable 137Cs and 131I activities for the system are 0.77 and 0.89 Bq/L, respectively.

Availability note (English)

Available from http://dx.doi.org/10.1088/1748-0221/14/10/P10038

Additional details

Identifiers

DOI
10.1088/1748-0221/14/10/P10038;

Publishing Information

Journal Title
Journal of Instrumentation
Journal Volume
14
Journal Issue
10
Journal Page Range
p. P10038
ISSN
1748-0221

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
51058650
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CESIUM 137; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; ENERGY SPECTRA; GALLIUM 68; IODINE 131; KEV RANGE 100-1000; MONITORING; MONTE CARLO METHOD; RADIATION DETECTION; SODIUM IODIDES; TANKS; UNDERWATER; WATER
Descriptors DEC
ALKALI METAL COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CALCULATION METHODS; CESIUM ISOTOPES; CONTAINERS; DAYS LIVING RADIOISOTOPES; DETECTION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY RANGE; EVALUATION; GALLIUM ISOTOPES; HALIDES; HALOGEN COMPOUNDS; HOURS LIVING RADIOISOTOPES; HYDROGEN COMPOUNDS; INORGANIC PHOSPHORS; INTERMEDIATE MASS NUCLEI; IODIDES; IODINE COMPOUNDS; IODINE ISOTOPES; ISOTOPES; KEV RANGE; LEVELS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; PHOSPHORS; RADIOISOTOPES; SIMULATION; SODIUM COMPOUNDS; SODIUM HALIDES; SPECTRA; YEARS LIVING RADIOISOTOPES