On fading corrections for LiF:Mg,Ti irradiated by thermal neutrons

U. German; M. Weinstein; A. Dubinski; N. Vainblat; Z. B. Alfassi

doi:10.1093/rpd/nch119

On fading corrections for LiF:Mg,Ti irradiated by thermal neutrons

U. German, M. Weinstein, A. Dubinski, N. Vainblat, Z. B. Alfassi

Unit of Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The phenomena of preirradiation and postirradiation fading of LiF:Mg,Ti phosphors are considered a significant practical problem in routine dosimetry because of the uncertainties introduced, especially for mixed neutron-gamma dosimetry, as different fading corrections may be necessary for the gamma and neutron contributions. We have investigated if the region of interest (ROI) method is applicable to minimizing the fading effect for thermal neutron irradiation as it is for gamma irradiation. By employing the ROI method, which consists of integration between channel 31 below the glow curve maximum and channel 16 above the glow curve maximum, a constant dose value was obtained for the period of 90 d. Thus, by employing the ROI method, a fading independent evaluation of the thermal neutron dose can be made.

Original language	English
Pages (from-to)	305-308
Number of pages	4
Journal	Radiation Protection Dosimetry
Volume	110
Issue number	1-4
DOIs	https://doi.org/10.1093/rpd/nch119
State	Published - 7 Oct 2004

ASJC Scopus subject areas

Radiation
Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

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abstract = "The phenomena of preirradiation and postirradiation fading of LiF:Mg,Ti phosphors are considered a significant practical problem in routine dosimetry because of the uncertainties introduced, especially for mixed neutron-gamma dosimetry, as different fading corrections may be necessary for the gamma and neutron contributions. We have investigated if the region of interest (ROI) method is applicable to minimizing the fading effect for thermal neutron irradiation as it is for gamma irradiation. By employing the ROI method, which consists of integration between channel 31 below the glow curve maximum and channel 16 above the glow curve maximum, a constant dose value was obtained for the period of 90 d. Thus, by employing the ROI method, a fading independent evaluation of the thermal neutron dose can be made.",

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AU - German, U.

AU - Weinstein, M.

AU - Dubinski, A.

AU - Vainblat, N.

AU - Alfassi, Z. B.

PY - 2004/10/7

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N2 - The phenomena of preirradiation and postirradiation fading of LiF:Mg,Ti phosphors are considered a significant practical problem in routine dosimetry because of the uncertainties introduced, especially for mixed neutron-gamma dosimetry, as different fading corrections may be necessary for the gamma and neutron contributions. We have investigated if the region of interest (ROI) method is applicable to minimizing the fading effect for thermal neutron irradiation as it is for gamma irradiation. By employing the ROI method, which consists of integration between channel 31 below the glow curve maximum and channel 16 above the glow curve maximum, a constant dose value was obtained for the period of 90 d. Thus, by employing the ROI method, a fading independent evaluation of the thermal neutron dose can be made.

AB - The phenomena of preirradiation and postirradiation fading of LiF:Mg,Ti phosphors are considered a significant practical problem in routine dosimetry because of the uncertainties introduced, especially for mixed neutron-gamma dosimetry, as different fading corrections may be necessary for the gamma and neutron contributions. We have investigated if the region of interest (ROI) method is applicable to minimizing the fading effect for thermal neutron irradiation as it is for gamma irradiation. By employing the ROI method, which consists of integration between channel 31 below the glow curve maximum and channel 16 above the glow curve maximum, a constant dose value was obtained for the period of 90 d. Thus, by employing the ROI method, a fading independent evaluation of the thermal neutron dose can be made.

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On fading corrections for LiF:Mg,Ti irradiated by thermal neutrons

Abstract

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