Neutron dosimetry with 6LiF-rich TL sheet

A 6LiF-rich thermoluminescent sheet-type dosemeter (6LiF-rich NTL sheet) was developed for neutron 2D dosimetry. The dosemeter utilises the 6Li(n, α)3H reaction to detect thermal neutrons. Responses of the 6LiF-rich NTL sheet to neutrons were measured at the neutron beam irradiation facility for BNC...

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Veröffentlicht in:Radiation protection dosimetry 2006-09, Vol.120 (1-4), p.133-135
Hauptverfasser: Konnai, Akiko, Odano, Naoteru, Nariyama, Nobuteru, Ohnishi, Seiki, Nakajima, Nobuya, Yamamoto, Kazuyoshi, Kishi, Toshiaki, Ozasa, Naoto, Ishikawa, Yuhzoh
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Sprache:eng
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Zusammenfassung:A 6LiF-rich thermoluminescent sheet-type dosemeter (6LiF-rich NTL sheet) was developed for neutron 2D dosimetry. The dosemeter utilises the 6Li(n, α)3H reaction to detect thermal neutrons. Responses of the 6LiF-rich NTL sheet to neutrons were measured at the neutron beam irradiation facility for BNCT in JRR-4 Research Reactor at the Japan Atomic Energy Research Institute. Placement of a multi-leaf collimator at the output port of the neutron (beam) irradiation facility, produced either stripe- or round-shaped neutron distributions; the spatial distribution was measured using the developed NTL sheets. Direct measurements of neutron attenuation in water were also carried out using the developed NTL sheet, submersed in a water phantom. In each experiment, NTL sheets having natural abundance (7.9%) of LiF, and 6LiF-enriched NTL (18.94%) sheet were irradiated under the same conditions. The ratio of thermoluminescence intensities of the 6LiF-rich NTL sheet to that of the normal NTL sheet was compared to a theoretically calculated value. The experimental measurements are shown to be in good agreement with the calculations.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/nci659