Advanced

Comparative Measurements of the External Radiation Exposure in a 137Cs Contaminated Village in Belarus Based on Optically Stimulated Luminescence in NaCl and Thermoluminescence in LiF.

Bernhardsson, Christian LU ; Matskevich, Svetlana; Mattsson, Sören LU and Rääf, Christopher LU (2012) In Health Physics 103(6). p.740-749
Abstract
ABSTRACT: Laboratory studies have shown that ordinary household salt (NaCl) exhibits several promising properties for retrospective dosimetry; e.g., a linear dose response and a low detection limit, down to a few mGy or even less. In an attempt to test NaCl as a dosimeter outside the laboratory, the first results from the use of NaCl as a dosimeter under normal environmental conditions are reported here. For this purpose, special dosimeter kits with NaCl and lithium fluoride (LiF) chips were designed. The dosimeter kits were positioned at different locations in a Chernobyl Cs-contaminated village in Belarus during the summers of 2008, 2009, and 2010. The results from the two luminescent detectors were also compared with those of... (More)
ABSTRACT: Laboratory studies have shown that ordinary household salt (NaCl) exhibits several promising properties for retrospective dosimetry; e.g., a linear dose response and a low detection limit, down to a few mGy or even less. In an attempt to test NaCl as a dosimeter outside the laboratory, the first results from the use of NaCl as a dosimeter under normal environmental conditions are reported here. For this purpose, special dosimeter kits with NaCl and lithium fluoride (LiF) chips were designed. The dosimeter kits were positioned at different locations in a Chernobyl Cs-contaminated village in Belarus during the summers of 2008, 2009, and 2010. The results from the two luminescent detectors were also compared with those of measurements carried out with a handheld 75 cm NaI(Tl) detector and with a 8 dm high pressure ionization chamber. The radiation level in the village was inhomogeneous, and depending on the type of house and countermeasures carried out, the ambient dose rate inside and around the houses varied between 0.05 μSv h and 0.50 μSv h. Based on the different measurements, the annual external effective dose to a hypothetical adult population in the village was estimated as 1-1.5 mSv y. Detector readings from the two luminescent materials correlated relatively strongly to that of the ambient survey NaI(Tl) detector. After three repeated surveys using similar dosimeter kits for prospective dosimetry, the potential use of ordinary household salt as a complement to other techniques for retrospective dose estimations is more evident, and shortcomings of the technique have been identified. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Chernobyl, Cs-137, radiation dose, thermoluminescence dosimetry, optically stimulated luminescence
in
Health Physics
volume
103
issue
6
pages
740 - 749
publisher
Lippincott Williams & Wilkins
external identifiers
  • wos:000310755600003
  • pmid:23111521
  • scopus:84869439013
ISSN
1538-5159
DOI
10.1097/HP.0b013e31825d0e1b
language
English
LU publication?
yes
id
345e5074-9b5c-4d84-ae15-f14843ae1fe5 (old id 3219362)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/23111521?dopt=Abstract
date added to LUP
2012-12-03 12:03:25
date last changed
2017-01-01 03:40:30
@article{345e5074-9b5c-4d84-ae15-f14843ae1fe5,
  abstract     = {ABSTRACT: Laboratory studies have shown that ordinary household salt (NaCl) exhibits several promising properties for retrospective dosimetry; e.g., a linear dose response and a low detection limit, down to a few mGy or even less. In an attempt to test NaCl as a dosimeter outside the laboratory, the first results from the use of NaCl as a dosimeter under normal environmental conditions are reported here. For this purpose, special dosimeter kits with NaCl and lithium fluoride (LiF) chips were designed. The dosimeter kits were positioned at different locations in a Chernobyl Cs-contaminated village in Belarus during the summers of 2008, 2009, and 2010. The results from the two luminescent detectors were also compared with those of measurements carried out with a handheld 75 cm NaI(Tl) detector and with a 8 dm high pressure ionization chamber. The radiation level in the village was inhomogeneous, and depending on the type of house and countermeasures carried out, the ambient dose rate inside and around the houses varied between 0.05 μSv h and 0.50 μSv h. Based on the different measurements, the annual external effective dose to a hypothetical adult population in the village was estimated as 1-1.5 mSv y. Detector readings from the two luminescent materials correlated relatively strongly to that of the ambient survey NaI(Tl) detector. After three repeated surveys using similar dosimeter kits for prospective dosimetry, the potential use of ordinary household salt as a complement to other techniques for retrospective dose estimations is more evident, and shortcomings of the technique have been identified.},
  author       = {Bernhardsson, Christian and Matskevich, Svetlana and Mattsson, Sören and Rääf, Christopher},
  issn         = {1538-5159},
  keyword      = {Chernobyl,Cs-137,radiation dose,thermoluminescence dosimetry,optically stimulated luminescence},
  language     = {eng},
  number       = {6},
  pages        = {740--749},
  publisher    = {Lippincott Williams & Wilkins},
  series       = {Health Physics},
  title        = {Comparative Measurements of the External Radiation Exposure in a 137Cs Contaminated Village in Belarus Based on Optically Stimulated Luminescence in NaCl and Thermoluminescence in LiF.},
  url          = {http://dx.doi.org/10.1097/HP.0b013e31825d0e1b},
  volume       = {103},
  year         = {2012},
}