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The influence of 134Cs on the 137Cs gamma-spectrometric peak-to-valley ratio and improvement of the peak-to-valley method by limiting the detector field of view

Östlund, Karl LU ; Samuelsson, Christer LU ; Mattsson, Sören LU and Rääf, Christopher L. LU (2017) In Applied Radiation and Isotopes 128. p.249-255
Abstract

The peak-to-valley method was investigated under laboratory conditions and in situ with respect to both 134Cs perturbation of the 137Cs valley and use of collimation. The 134Cs perturbation is significant down to 134Cs:137Cs activity ratios of 1:100. In these cases the full energy peaks from 134Cs (796 and 802 keV) and associated valley should be used instead of the peak and valley from the 137Cs 662 keV peak. Use of collimators in situ outside Fukushima Daiichi significantly increased PTV for 134Cs.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cs and Cs deposition, Collimators, Depth distribution, Field gamma spectrometry, Fukushima, HPGe, in situ, Peak-to-valley ratio, PTV
in
Applied Radiation and Isotopes
volume
128
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85025114006
  • wos:000410016200037
ISSN
0969-8043
DOI
10.1016/j.apradiso.2017.07.004
language
English
LU publication?
yes
id
bc389bde-cb36-4edf-a010-8c6a84228c2d
date added to LUP
2017-07-31 08:22:42
date last changed
2018-01-16 13:21:59
@article{bc389bde-cb36-4edf-a010-8c6a84228c2d,
  abstract     = {<p>The peak-to-valley method was investigated under laboratory conditions and in situ with respect to both <sup>134</sup>Cs perturbation of the <sup>137</sup>Cs valley and use of collimation. The <sup>134</sup>Cs perturbation is significant down to <sup>134</sup>Cs:<sup>137</sup>Cs activity ratios of 1:100. In these cases the full energy peaks from <sup>134</sup>Cs (796 and 802 keV) and associated valley should be used instead of the peak and valley from the <sup>137</sup>Cs 662 keV peak. Use of collimators in situ outside Fukushima Daiichi significantly increased PTV for <sup>134</sup>Cs.</p>},
  author       = {Östlund, Karl and Samuelsson, Christer and Mattsson, Sören and Rääf, Christopher L.},
  issn         = {0969-8043},
  keyword      = {Cs and Cs deposition,Collimators,Depth distribution,Field gamma spectrometry,Fukushima,HPGe,in situ,Peak-to-valley ratio,PTV},
  language     = {eng},
  month        = {10},
  pages        = {249--255},
  publisher    = {Elsevier},
  series       = {Applied Radiation and Isotopes},
  title        = {The influence of <sup>134</sup>Cs on the <sup>137</sup>Cs gamma-spectrometric peak-to-valley ratio and improvement of the peak-to-valley method by limiting the detector field of view},
  url          = {http://dx.doi.org/10.1016/j.apradiso.2017.07.004},
  volume       = {128},
  year         = {2017},
}