A search for IRSL-Active dosimeters with enhanced sensitivity : a spectroscopic survey

N.R.J. Poolton; L. Bøtter-Jensen; O. Johnson

doi:10.1016/S1350-4487(96)00125-4

A search for IRSL-Active dosimeters with enhanced sensitivity : a spectroscopic survey

N.R.J. Poolton
, L. Bøtter-Jensen
, O. Johnson

Research output: Contribution to journal › Journal article › Research

Abstract

The spectral and radiation dose characteristics of a range of previously uninvestigated alumine-silicate materials are surveyed, with the intention of searching for alternative, high sensitivity materials that could potentially be used as InfraRed Stimulated Luminescence (IRSL) dosemeters for the measurement of environmental doserates. Quartz, petalite, feldspar, leucite, analcite, nephaline, sodalite, tugtupite and alumina were studied and, of this set, only feldspar and alumina were found to be useful. To improve the sensitivity of natural feldspar materials, these were annealed in nitrogen atmospheres at 950 degrees C in the presence of Fe, Zn, Eu, Dy, Ni, Cu, Ag and Au. Of these, Cu,Ag and Au were found to significantly enhance the IRSL sensitivity of the materials. From spectral analysis of the luminescence properties of the samples, it is concluded that the dopants are not directly involved in the IRSL process, but rather they act as catalysts in the creation of native lattice defects. (C) 1997 Elsevier Science Ltd.

Original language	English
Journal	Radiation Measurements
Volume	27
Issue number	2
Pages (from-to)	279-290
ISSN	1350-4487
DOIs	https://doi.org/10.1016/S1350-4487(96)00125-4
Publication status	Published - 1997

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title = "A search for IRSL-Active dosimeters with enhanced sensitivity : a spectroscopic survey",

abstract = "The spectral and radiation dose characteristics of a range of previously uninvestigated alumine-silicate materials are surveyed, with the intention of searching for alternative, high sensitivity materials that could potentially be used as InfraRed Stimulated Luminescence (IRSL) dosemeters for the measurement of environmental doserates. Quartz, petalite, feldspar, leucite, analcite, nephaline, sodalite, tugtupite and alumina were studied and, of this set, only feldspar and alumina were found to be useful. To improve the sensitivity of natural feldspar materials, these were annealed in nitrogen atmospheres at 950 degrees C in the presence of Fe, Zn, Eu, Dy, Ni, Cu, Ag and Au. Of these, Cu,Ag and Au were found to significantly enhance the IRSL sensitivity of the materials. From spectral analysis of the luminescence properties of the samples, it is concluded that the dopants are not directly involved in the IRSL process, but rather they act as catalysts in the creation of native lattice defects. (C) 1997 Elsevier Science Ltd.",

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T1 - A search for IRSL-Active dosimeters with enhanced sensitivity : a spectroscopic survey

AU - Poolton, N.R.J.

AU - Bøtter-Jensen, L.

AU - Johnson, O.

PY - 1997

Y1 - 1997

N2 - The spectral and radiation dose characteristics of a range of previously uninvestigated alumine-silicate materials are surveyed, with the intention of searching for alternative, high sensitivity materials that could potentially be used as InfraRed Stimulated Luminescence (IRSL) dosemeters for the measurement of environmental doserates. Quartz, petalite, feldspar, leucite, analcite, nephaline, sodalite, tugtupite and alumina were studied and, of this set, only feldspar and alumina were found to be useful. To improve the sensitivity of natural feldspar materials, these were annealed in nitrogen atmospheres at 950 degrees C in the presence of Fe, Zn, Eu, Dy, Ni, Cu, Ag and Au. Of these, Cu,Ag and Au were found to significantly enhance the IRSL sensitivity of the materials. From spectral analysis of the luminescence properties of the samples, it is concluded that the dopants are not directly involved in the IRSL process, but rather they act as catalysts in the creation of native lattice defects. (C) 1997 Elsevier Science Ltd.

AB - The spectral and radiation dose characteristics of a range of previously uninvestigated alumine-silicate materials are surveyed, with the intention of searching for alternative, high sensitivity materials that could potentially be used as InfraRed Stimulated Luminescence (IRSL) dosemeters for the measurement of environmental doserates. Quartz, petalite, feldspar, leucite, analcite, nephaline, sodalite, tugtupite and alumina were studied and, of this set, only feldspar and alumina were found to be useful. To improve the sensitivity of natural feldspar materials, these were annealed in nitrogen atmospheres at 950 degrees C in the presence of Fe, Zn, Eu, Dy, Ni, Cu, Ag and Au. Of these, Cu,Ag and Au were found to significantly enhance the IRSL sensitivity of the materials. From spectral analysis of the luminescence properties of the samples, it is concluded that the dopants are not directly involved in the IRSL process, but rather they act as catalysts in the creation of native lattice defects. (C) 1997 Elsevier Science Ltd.

KW - Nuklear sikkerhed

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DO - 10.1016/S1350-4487(96)00125-4

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VL - 27

SP - 279

EP - 290

JO - Radiation Measurements

JF - Radiation Measurements

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ER -

A search for IRSL-Active dosimeters with enhanced sensitivity : a spectroscopic survey

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