Development of new optically stimulated luminescence (OSL) neutron dosimeters

Eduardo Gardenali Yukihara; J. C. Mittani; Filip Vanhavere; M. S. Akselrod

doi:10.1016/j.radmeas.2007.10.005

Development of new optically stimulated luminescence (OSL) neutron dosimeters

Eduardo Gardenali Yukihara, J. C. Mittani, Filip Vanhavere, M. S. Akselrod

Research output › peer-review

Abstract

This paper demonstrates the possibility of using neutron converters incorporated into Al₂ O₃ : C dosimeters to produce new neutron-sensitive OSL dosimeters suitable for personal monitoring. A comparison between different neutron converters indicate that lithium-based compounds (⁶LiF and ⁶Li₂ CO₃) result in the best neutron sensitivity, probably because of the relatively large range of the 2.75 MeV triton produced by the ⁶Li (n, α) ³H neutron capture reaction. Based on these results, a new neutron-sensitive OSL composite material, identical to the one used in the Luxel™ and InLight™ dosimetry systems (Landauer Inc.) except for the smaller gamma sensitivity and enhanced neutron sensitivity, was produced and characterized. The gamma sensitivity of the new material is ∼ 35 % the sensitivity of the regular Al₂ O₃ : C material (Luxel™), due to reduced amount of Al₂ O₃ : C in its composition. The neutron sensitivity achieved in this new material is ∼ 60 % of the neutron sensitivity of ⁶LiF:Mg,Ti (TLD-600).

Original language	English
Pages (from-to)	309-314
Number of pages	6
Journal	Radiation Measurements
Volume	43
Issue number	2-6
DOIs	https://doi.org/10.1016/j.radmeas.2007.10.005
State	Published - Feb 2008

Funding

Funders	Funder number
Landauer Inc.

ASJC Scopus subject areas

Radiation
Instrumentation

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Cite this

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title = "Development of new optically stimulated luminescence (OSL) neutron dosimeters",

abstract = "This paper demonstrates the possibility of using neutron converters incorporated into Al2 O3 : C dosimeters to produce new neutron-sensitive OSL dosimeters suitable for personal monitoring. A comparison between different neutron converters indicate that lithium-based compounds (6LiF and 6Li2 CO3) result in the best neutron sensitivity, probably because of the relatively large range of the 2.75 MeV triton produced by the 6Li (n, α) 3H neutron capture reaction. Based on these results, a new neutron-sensitive OSL composite material, identical to the one used in the Luxel{\texttrademark} and InLight{\texttrademark} dosimetry systems (Landauer Inc.) except for the smaller gamma sensitivity and enhanced neutron sensitivity, was produced and characterized. The gamma sensitivity of the new material is ∼ 35 % the sensitivity of the regular Al2 O3 : C material (Luxel{\texttrademark}), due to reduced amount of Al2 O3 : C in its composition. The neutron sensitivity achieved in this new material is ∼ 60 % of the neutron sensitivity of 6LiF:Mg,Ti (TLD-600).",

keywords = "Neutron converters, Neutron dosimetry, Optically stimulated luminescence",

author = "{Gardenali Yukihara}, Eduardo and Mittani, {J. C.} and Filip Vanhavere and Akselrod, {M. S.}",

year = "2008",

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doi = "10.1016/j.radmeas.2007.10.005",

language = "English",

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journal = "Radiation Measurements",

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T1 - Development of new optically stimulated luminescence (OSL) neutron dosimeters

AU - Gardenali Yukihara, Eduardo

AU - Mittani, J. C.

AU - Vanhavere, Filip

AU - Akselrod, M. S.

PY - 2008/2

Y1 - 2008/2

N2 - This paper demonstrates the possibility of using neutron converters incorporated into Al2 O3 : C dosimeters to produce new neutron-sensitive OSL dosimeters suitable for personal monitoring. A comparison between different neutron converters indicate that lithium-based compounds (6LiF and 6Li2 CO3) result in the best neutron sensitivity, probably because of the relatively large range of the 2.75 MeV triton produced by the 6Li (n, α) 3H neutron capture reaction. Based on these results, a new neutron-sensitive OSL composite material, identical to the one used in the Luxel™ and InLight™ dosimetry systems (Landauer Inc.) except for the smaller gamma sensitivity and enhanced neutron sensitivity, was produced and characterized. The gamma sensitivity of the new material is ∼ 35 % the sensitivity of the regular Al2 O3 : C material (Luxel™), due to reduced amount of Al2 O3 : C in its composition. The neutron sensitivity achieved in this new material is ∼ 60 % of the neutron sensitivity of 6LiF:Mg,Ti (TLD-600).

AB - This paper demonstrates the possibility of using neutron converters incorporated into Al2 O3 : C dosimeters to produce new neutron-sensitive OSL dosimeters suitable for personal monitoring. A comparison between different neutron converters indicate that lithium-based compounds (6LiF and 6Li2 CO3) result in the best neutron sensitivity, probably because of the relatively large range of the 2.75 MeV triton produced by the 6Li (n, α) 3H neutron capture reaction. Based on these results, a new neutron-sensitive OSL composite material, identical to the one used in the Luxel™ and InLight™ dosimetry systems (Landauer Inc.) except for the smaller gamma sensitivity and enhanced neutron sensitivity, was produced and characterized. The gamma sensitivity of the new material is ∼ 35 % the sensitivity of the regular Al2 O3 : C material (Luxel™), due to reduced amount of Al2 O3 : C in its composition. The neutron sensitivity achieved in this new material is ∼ 60 % of the neutron sensitivity of 6LiF:Mg,Ti (TLD-600).

KW - Neutron converters

KW - Neutron dosimetry

KW - Optically stimulated luminescence

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