Development of new optically stimulated luminescence (OSL) neutron dosimeters

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

    Research outputpeer-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 languageEnglish
    Pages (from-to)309-314
    Number of pages6
    JournalRadiation Measurements
    Volume43
    Issue number2-6
    DOIs
    StatePublished - Feb 2008

    Funding

    The authors would like to thank Bart Marlein and Ludo Melis for assistance with the irradiations at SCK-CEN. This work was supported by Landauer Inc.

    FundersFunder number
    Landauer Inc.

      ASJC Scopus subject areas

      • Radiation
      • Instrumentation

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