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Tests of HPGe- and scintillation-based backpack γ-radiation survey systems.

Nilsson, Jonas LU ; Östlund, Karl LU ; Söderberg, Joakim; Mattsson, Sören LU and Rääf, Christopher LU (2014) In Journal of Environmental Radioactivity 135(Apr 24). p.54-62
Abstract
The performance of three different backpack-mounted γ-radiation survey systems has been investigated. The systems are based on a LaBr3:Ce detector and a NaI(Tl) detector both with active volume dimensions of 76.2 mm in diameter and 76.2 mm length and a 123% relative efficiency HPGe detector. The detection limits of the systems were tested in a controlled outdoor environment in Sweden, followed by field tests of the HPGe- and LaBr3:Ce-based systems at the site of a radioactive waste repository in Georgia (in the Caucasus region of Eurasia). The results showed that the high efficiency HPGe detector performed significantly better than similar sized LaBr3:Ce and NaI(Tl) detectors, however, the HPGe detector was significantly heavier than the... (More)
The performance of three different backpack-mounted γ-radiation survey systems has been investigated. The systems are based on a LaBr3:Ce detector and a NaI(Tl) detector both with active volume dimensions of 76.2 mm in diameter and 76.2 mm length and a 123% relative efficiency HPGe detector. The detection limits of the systems were tested in a controlled outdoor environment in Sweden, followed by field tests of the HPGe- and LaBr3:Ce-based systems at the site of a radioactive waste repository in Georgia (in the Caucasus region of Eurasia). The results showed that the high efficiency HPGe detector performed significantly better than similar sized LaBr3:Ce and NaI(Tl) detectors, however, the HPGe detector was significantly heavier than the other systems. The use of different analysis methods revealed that creating maps of the survey area was the best method for offline analysis of survey data collected from a large area. Using off-site personnel for analysis of the data proved to be beneficial. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Environmental Radioactivity
volume
135
issue
Apr 24
pages
54 - 62
publisher
Elsevier
external identifiers
  • pmid:24776755
  • wos:000339603000007
  • scopus:84899667966
ISSN
1879-1700
DOI
10.1016/j.jenvrad.2014.03.013
language
English
LU publication?
yes
id
bd8e53e5-3eae-4711-afea-021aab40956e (old id 4429361)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/24776755?dopt=Abstract
date added to LUP
2014-05-02 23:13:23
date last changed
2017-08-13 03:19:44
@article{bd8e53e5-3eae-4711-afea-021aab40956e,
  abstract     = {The performance of three different backpack-mounted γ-radiation survey systems has been investigated. The systems are based on a LaBr3:Ce detector and a NaI(Tl) detector both with active volume dimensions of 76.2 mm in diameter and 76.2 mm length and a 123% relative efficiency HPGe detector. The detection limits of the systems were tested in a controlled outdoor environment in Sweden, followed by field tests of the HPGe- and LaBr3:Ce-based systems at the site of a radioactive waste repository in Georgia (in the Caucasus region of Eurasia). The results showed that the high efficiency HPGe detector performed significantly better than similar sized LaBr3:Ce and NaI(Tl) detectors, however, the HPGe detector was significantly heavier than the other systems. The use of different analysis methods revealed that creating maps of the survey area was the best method for offline analysis of survey data collected from a large area. Using off-site personnel for analysis of the data proved to be beneficial.},
  author       = {Nilsson, Jonas and Östlund, Karl and Söderberg, Joakim and Mattsson, Sören and Rääf, Christopher},
  issn         = {1879-1700},
  language     = {eng},
  number       = {Apr 24},
  pages        = {54--62},
  publisher    = {Elsevier},
  series       = {Journal of Environmental Radioactivity},
  title        = {Tests of HPGe- and scintillation-based backpack γ-radiation survey systems.},
  url          = {http://dx.doi.org/10.1016/j.jenvrad.2014.03.013},
  volume       = {135},
  year         = {2014},
}