Optically stimulated luminescence fluence response of Al2 O3: C dosimeters exposed to different types of radiation

G. O. Sawakuchi; E. G. Yukihara; S. W.S. McKeever; E. R. Benton

doi:10.1016/j.radmeas.2007.08.003

Optically stimulated luminescence fluence response of Al₂ O₃: C dosimeters exposed to different types of radiation

G. O. Sawakuchi, E. G. Yukihara, S. W.S. McKeever, E. R. Benton

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

17 Scopus citations

Abstract

This paper presents the optically stimulated luminescence (OSL) fluence response of carbon-doped aluminum oxide (Al₂ O₃ : C) dosimeters irradiated with heavy charged particles (HCPs) of energies relevant to radiation protection in space. The dosimeters were exposed to seven HCP beams with linear energy transfer in water from 0.223 keV/μm to 431.8 keV / μ m, and fluences from 2.9 × 10³ cm^{- 2} to 2.8 × 10¹⁰ cm^{- 2}. Irradiations with a ⁹⁰ Sr /⁹⁰ Y beta source were also performed for comparison. The results show that the dosimeters' response to high-energy protons is similar to that for the ⁹⁰ Sr /⁹⁰ Y beta source. The supralinearity in the dose response curve of dosimeters exposed to the ⁹⁰ Sr /⁹⁰ Y beta source and high-energy protons can be avoided by appropriate choice of optical filters. For HCPs from He to Fe no supralinearity was observed in the OSL dose response. We interpret the results in the framework of track structure model.

Original language	English (US)
Pages (from-to)	450-454
Number of pages	5
Journal	Radiation Measurements
Volume	43
Issue number	2-6
DOIs	https://doi.org/10.1016/j.radmeas.2007.08.003
State	Published - Feb 2008
Externally published	Yes

Keywords

Carbon-doped aluminum oxide
Dose response
Fluence response
Optically stimulated luminescence
Supralinearity index
Track interaction
Track overlap
Track structure model

ASJC Scopus subject areas

Radiation
Instrumentation

Access to Document

10.1016/j.radmeas.2007.08.003

Cite this

@article{e575e35e573248289b21f129046a7869,

title = "Optically stimulated luminescence fluence response of Al2 O3: C dosimeters exposed to different types of radiation",

abstract = "This paper presents the optically stimulated luminescence (OSL) fluence response of carbon-doped aluminum oxide (Al2 O3 : C) dosimeters irradiated with heavy charged particles (HCPs) of energies relevant to radiation protection in space. The dosimeters were exposed to seven HCP beams with linear energy transfer in water from 0.223 keV/μm to 431.8 keV / μ m, and fluences from 2.9 × 103 cm- 2 to 2.8 × 1010 cm- 2. Irradiations with a 90 Sr /90 Y beta source were also performed for comparison. The results show that the dosimeters' response to high-energy protons is similar to that for the 90 Sr /90 Y beta source. The supralinearity in the dose response curve of dosimeters exposed to the 90 Sr /90 Y beta source and high-energy protons can be avoided by appropriate choice of optical filters. For HCPs from He to Fe no supralinearity was observed in the OSL dose response. We interpret the results in the framework of track structure model.",

keywords = "Carbon-doped aluminum oxide, Dose response, Fluence response, Optically stimulated luminescence, Supralinearity index, Track interaction, Track overlap, Track structure model",

author = "Sawakuchi, {G. O.} and Yukihara, {E. G.} and McKeever, {S. W.S.} and Benton, {E. R.}",

year = "2008",

month = feb,

doi = "10.1016/j.radmeas.2007.08.003",

language = "English (US)",

volume = "43",

pages = "450--454",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Limited",

number = "2-6",

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TY - JOUR

T1 - Optically stimulated luminescence fluence response of Al2 O3

T2 - C dosimeters exposed to different types of radiation

AU - Sawakuchi, G. O.

AU - Yukihara, E. G.

AU - McKeever, S. W.S.

AU - Benton, E. R.

PY - 2008/2

Y1 - 2008/2

N2 - This paper presents the optically stimulated luminescence (OSL) fluence response of carbon-doped aluminum oxide (Al2 O3 : C) dosimeters irradiated with heavy charged particles (HCPs) of energies relevant to radiation protection in space. The dosimeters were exposed to seven HCP beams with linear energy transfer in water from 0.223 keV/μm to 431.8 keV / μ m, and fluences from 2.9 × 103 cm- 2 to 2.8 × 1010 cm- 2. Irradiations with a 90 Sr /90 Y beta source were also performed for comparison. The results show that the dosimeters' response to high-energy protons is similar to that for the 90 Sr /90 Y beta source. The supralinearity in the dose response curve of dosimeters exposed to the 90 Sr /90 Y beta source and high-energy protons can be avoided by appropriate choice of optical filters. For HCPs from He to Fe no supralinearity was observed in the OSL dose response. We interpret the results in the framework of track structure model.

AB - This paper presents the optically stimulated luminescence (OSL) fluence response of carbon-doped aluminum oxide (Al2 O3 : C) dosimeters irradiated with heavy charged particles (HCPs) of energies relevant to radiation protection in space. The dosimeters were exposed to seven HCP beams with linear energy transfer in water from 0.223 keV/μm to 431.8 keV / μ m, and fluences from 2.9 × 103 cm- 2 to 2.8 × 1010 cm- 2. Irradiations with a 90 Sr /90 Y beta source were also performed for comparison. The results show that the dosimeters' response to high-energy protons is similar to that for the 90 Sr /90 Y beta source. The supralinearity in the dose response curve of dosimeters exposed to the 90 Sr /90 Y beta source and high-energy protons can be avoided by appropriate choice of optical filters. For HCPs from He to Fe no supralinearity was observed in the OSL dose response. We interpret the results in the framework of track structure model.

KW - Carbon-doped aluminum oxide

KW - Dose response

KW - Fluence response

KW - Optically stimulated luminescence

KW - Supralinearity index

KW - Track interaction

KW - Track overlap

KW - Track structure model

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