On the readout of HT peaks in LiF:Mg,Ti by applying high rate gas heating

U. German; M. Weinstein; A. Abraham; Z. B. Alfassi

doi:10.1016/j.nima.2008.12.193

On the readout of HT peaks in LiF:Mg,Ti by applying high rate gas heating

U. German, M. Weinstein, A. Abraham, Z. B. Alfassi

Unit of Nuclear Engineering

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

2 Scopus citations

Abstract

The main high temperature (HT) peaks in the glow curves of LiF:Mg,Ti, normally assigned as 6 and 7 are known to have higher response to high LET radiation than to low LET radiation. This effect can be used in principle to discriminate between neutrons and gamma rays in a mixed neutron-gamma field. In routine dosimetry, a high rate gas heating of Teflon coated chips is employed (mostly 25 °C/s), which may cause marginal thermal conditions. The fast heating rate readout process of the HT peaks and the practical consequences were studied, leading to the conclusion that in spite of the technical constraints, using high rate gas heating produces results which are not significantly different from those using a slow heating rate. Applying high heating rates seems to pose no practical obstacle in utilizing HT peaks information, which has the potential to be used for mixed neutron-gamma dosimetry.

Original language	English
Pages (from-to)	683-688
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	600
Issue number	3
DOIs	https://doi.org/10.1016/j.nima.2008.12.193
State	Published - 11 Mar 2009

Keywords

Gas heating
HT peaks
High rate
LiF:Mg,Ti

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2008.12.193

Cite this

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title = "On the readout of HT peaks in LiF:Mg,Ti by applying high rate gas heating",

abstract = "The main high temperature (HT) peaks in the glow curves of LiF:Mg,Ti, normally assigned as 6 and 7 are known to have higher response to high LET radiation than to low LET radiation. This effect can be used in principle to discriminate between neutrons and gamma rays in a mixed neutron-gamma field. In routine dosimetry, a high rate gas heating of Teflon coated chips is employed (mostly 25 °C/s), which may cause marginal thermal conditions. The fast heating rate readout process of the HT peaks and the practical consequences were studied, leading to the conclusion that in spite of the technical constraints, using high rate gas heating produces results which are not significantly different from those using a slow heating rate. Applying high heating rates seems to pose no practical obstacle in utilizing HT peaks information, which has the potential to be used for mixed neutron-gamma dosimetry.",

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AU - German, U.

AU - Weinstein, M.

AU - Abraham, A.

AU - Alfassi, Z. B.

PY - 2009/3/11

Y1 - 2009/3/11

N2 - The main high temperature (HT) peaks in the glow curves of LiF:Mg,Ti, normally assigned as 6 and 7 are known to have higher response to high LET radiation than to low LET radiation. This effect can be used in principle to discriminate between neutrons and gamma rays in a mixed neutron-gamma field. In routine dosimetry, a high rate gas heating of Teflon coated chips is employed (mostly 25 °C/s), which may cause marginal thermal conditions. The fast heating rate readout process of the HT peaks and the practical consequences were studied, leading to the conclusion that in spite of the technical constraints, using high rate gas heating produces results which are not significantly different from those using a slow heating rate. Applying high heating rates seems to pose no practical obstacle in utilizing HT peaks information, which has the potential to be used for mixed neutron-gamma dosimetry.

AB - The main high temperature (HT) peaks in the glow curves of LiF:Mg,Ti, normally assigned as 6 and 7 are known to have higher response to high LET radiation than to low LET radiation. This effect can be used in principle to discriminate between neutrons and gamma rays in a mixed neutron-gamma field. In routine dosimetry, a high rate gas heating of Teflon coated chips is employed (mostly 25 °C/s), which may cause marginal thermal conditions. The fast heating rate readout process of the HT peaks and the practical consequences were studied, leading to the conclusion that in spite of the technical constraints, using high rate gas heating produces results which are not significantly different from those using a slow heating rate. Applying high heating rates seems to pose no practical obstacle in utilizing HT peaks information, which has the potential to be used for mixed neutron-gamma dosimetry.

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KW - High rate

KW - LiF:Mg,Ti

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On the readout of HT peaks in LiF:Mg,Ti by applying high rate gas heating

Abstract

Keywords

ASJC Scopus subject areas

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