Published 2011 | Version v1
Journal article Metadata-only

Monte Carlo simulation of in situ LaBr gamma-ray spectrometer for marine environmental monitoring

Creators

  • 1. Key Laboratory of High Energy Radiation Imaging Fundamental Science for National Defense, Beijing 100084 (China)
  • 2. Key Laboratory of Particle and Radiation Imaging Tsinghua Univ., Ministry of Education, Beijing 100084 (China)
  • 3. Dept. of Engineering Physics, Tsinghua Univ., Beijing 100084 (China)

Description

Monte Carlo simulation of energy-response functions of gamma rays from natural/artificial radionuclides in seawater and simulation of energy spectrum due to self-activity in LaBr crystal were carried out using MCNPX codes and MATLAB programs for the in situ LaBr gamma-ray spectrometer immersed in homogeneous seawater. The effective detection distance, the detection efficiency and the minimum detectable activity concentration (MDAC) for artificial radionuclides 137Cs were worked out as an instance. Similar researches for NaI detector was also implemented for comparison. The results indicate that the self-activity in LaBr deteriorates the MDAC to merely several times of that of NaI detector. The LaBr detector is possible to be used as in situ gamma-ray spectrometer for monitoring of artificial radionuclides in seawater. (authors)

Availability note (English)

Available from doi: http://dx.doi.org/10.1093/rpd/ncr122

Additional details

Identifiers

DOI
10.1093/rpd/ncr122;

Publishing Information

Journal Title
Radiation Protection Dosimetry
Journal Volume
146
Journal Issue
1-3
Journal Page Range
p. 103-106
ISSN
0144-8420

Conference

Title
3. Asian and Oceanic Congress on Radiation Protection
Acronym
AOCRP-3
Dates
24-28 May 2010
Place
Tokyo (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
France
INIS RN
43072032
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S61: RADIATION PROTECTION AND DOSIMETRY; S97: MATHEMATICAL METHODS AND COMPUTING;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BROMIDES; CESIUM; COMPUTERIZED SIMULATION; CRYSTALS; DETECTION; EFFICIENCY; ENERGY SPECTRA; GAMMA RADIATION; GAMMA SPECTROMETERS; MONTE CARLO METHOD; NAI DETECTORS; RADIATION MONITORING; SPECTROSCOPY
Descriptors DEC
ALKALI METALS; BROMINE COMPOUNDS; CALCULATION METHODS; ELECTROMAGNETIC RADIATION; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; MEASURING INSTRUMENTS; METALS; MONITORING; RADIATION DETECTORS; RADIATIONS; SCINTILLATION COUNTERS; SIMULATION; SOLID SCINTILLATION DETECTORS; SPECTRA; SPECTROMETERS

Optional Information

Notes
7 refs