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Household salt as a retrospective dosemeter using optically stimulated luminescence.

Bernhardsson, Christian LU ; Christiansson, Maria; Mattsson, Sören LU and Rääf, Christopher LU (2009) In Radiation and Environmental Biophysics 48. p.21-28
Abstract
The aim of this work was to investigate the potential of a selection of household salts (NaCl) as a retrospective dosemeter for ionising radiation using optically stimulated luminescence (OSL). The OSL-response of five brands of salt to an absorbed dose in the range from 1 mGy to 9 Gy was investigated using a Risø TL/OSL-15 reader and a (60)Co beam, allowing low dose-rate irradiations. The salt was optically stimulated with blue light (lambda = 470 +/- 30 nm) at a constant stimulation power (CW-OSL) of 20 mW cm(-2). A linear dose response relationship was found in the dose range from 1 mGy to about 100 mGy and above that level, the relationship becomes moderately supra-linear, at least up to 9 Gy. Depending on the sensitivity and... (More)
The aim of this work was to investigate the potential of a selection of household salts (NaCl) as a retrospective dosemeter for ionising radiation using optically stimulated luminescence (OSL). The OSL-response of five brands of salt to an absorbed dose in the range from 1 mGy to 9 Gy was investigated using a Risø TL/OSL-15 reader and a (60)Co beam, allowing low dose-rate irradiations. The salt was optically stimulated with blue light (lambda = 470 +/- 30 nm) at a constant stimulation power (CW-OSL) of 20 mW cm(-2). A linear dose response relationship was found in the dose range from 1 mGy to about 100 mGy and above that level, the relationship becomes moderately supra-linear, at least up to 9 Gy. Depending on the sensitivity and background signal, the minimum detectable absorbed dose (MDD) for the household salt when kept at sealed conditions varied from 0.2 to 1.0 mGy, for the household salts investigated. In addition to its widespread abundance and availability, the low MDD suggests that household salt should seriously be considered as an emergency dosemeter. However, the OSL-properties of NaCl under normal household usage need to be more properly investigated as well as the variation in sensitivity by the quality of the radiation. A further optimisation of the read-out sequence for various brands of commercially available salt may further improve the sensitivity, in terms of luminescence yield, and the signal reproducibility. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation and Environmental Biophysics
volume
48
pages
21 - 28
publisher
Springer
external identifiers
  • WOS:000262316300003
  • PMID:18797911
  • Scopus:58149337377
ISSN
1432-2099
DOI
10.1007/s00411-008-0191-y
language
English
LU publication?
yes
id
b5015450-2299-4d09-90c9-8e6cd082bf5e (old id 1242921)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/18797911?dopt=Abstract
date added to LUP
2008-10-07 15:01:02
date last changed
2017-01-01 07:46:49
@article{b5015450-2299-4d09-90c9-8e6cd082bf5e,
  abstract     = {The aim of this work was to investigate the potential of a selection of household salts (NaCl) as a retrospective dosemeter for ionising radiation using optically stimulated luminescence (OSL). The OSL-response of five brands of salt to an absorbed dose in the range from 1 mGy to 9 Gy was investigated using a Risø TL/OSL-15 reader and a (60)Co beam, allowing low dose-rate irradiations. The salt was optically stimulated with blue light (lambda = 470 +/- 30 nm) at a constant stimulation power (CW-OSL) of 20 mW cm(-2). A linear dose response relationship was found in the dose range from 1 mGy to about 100 mGy and above that level, the relationship becomes moderately supra-linear, at least up to 9 Gy. Depending on the sensitivity and background signal, the minimum detectable absorbed dose (MDD) for the household salt when kept at sealed conditions varied from 0.2 to 1.0 mGy, for the household salts investigated. In addition to its widespread abundance and availability, the low MDD suggests that household salt should seriously be considered as an emergency dosemeter. However, the OSL-properties of NaCl under normal household usage need to be more properly investigated as well as the variation in sensitivity by the quality of the radiation. A further optimisation of the read-out sequence for various brands of commercially available salt may further improve the sensitivity, in terms of luminescence yield, and the signal reproducibility.},
  author       = {Bernhardsson, Christian and Christiansson, Maria and Mattsson, Sören and Rääf, Christopher},
  issn         = {1432-2099},
  language     = {eng},
  pages        = {21--28},
  publisher    = {Springer},
  series       = {Radiation and Environmental Biophysics},
  title        = {Household salt as a retrospective dosemeter using optically stimulated luminescence.},
  url          = {http://dx.doi.org/10.1007/s00411-008-0191-y},
  volume       = {48},
  year         = {2009},
}