Browse > Article

Development of a TL pellet based on $CaSO_4:Dy$ for Neutron Measurement  

Yang, Jeong-Seon (Korea Atomic Energy Research Institute)
Lee, Jeong-Il (Korea Atomic Energy Research Institute)
Kim, Jang-Lyul (Korea Atomic Energy Research Institute)
Kim, Bong-Hwan (Korea Atomic Energy Research Institute)
Sou, Dong-Sup (Korea Atomic Energy Research Institute)
Publication Information
Journal of Radiation Protection and Research / v.31, no.3, 2006 , pp. 129-134 More about this Journal
Abstract
A TL pellet for a neutron dose measurement (KCT-306) by embedding a $^6Li$-compound into a $CaSO_4:Dy$ phohphor was developed based upon the technical information of KCT-300. The KCT-300 is an another kind of $CaSO_4:Dy$ TL detector shich was developed at KAERI, in which small amounts of $NH_4H_2PO_4$ have been emvedded as a binding material. This paper presented the optimized manufacturing condition of KCT-306 and compared its sensitivity with that of the commercialized neutron TL pellets. $CaSO_4:Dy$ Phosphor with grain size ranging less than $45{\mu}m$ are used for the KCT-306. The optimum $CaSO_4:Dy$ TL phosphor, $^6Li$-compounds and P-compound as the binding material are determined as 20-40wt%, 50-70wt% and 20wt%. The TL pellet combination of our KCT-306/KCT-300, TLD-600/TLD-700 and TLD-600H/TLD-700H(Harshaw) have been irradiated in the neutron/gamma mixed fields from a $D_2O$ moderated $^{252}Cf$ neutron source. The KCT-300, TLD-700 and TLD-700H were used at the same time as gamma ray discriminators in the neutron/gamma mixed fields. It was found that the neutron/gamma response ratios of KCT-306/KCT-300, which were developed in this study, were approximately 4 times higher than those of the commercial TLD-600H/TLD-700H.
Keywords
TLD; $CaSO_4:Dy$ TL phosphor; Neutron; Gamma;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Iga K, Yamashita T, Takenaga M, Yasuno Y, Oonishi H and Ikedo M. Composite TLD Based on $CaSO_4$:Tm for ${\gamma}$-rays, X-rays, ${\beta}$-rays and thermal neutron. Health physics Pergamon Press 1977;33:605-610   DOI   ScienceOn
2 Takenaga M. Thermoluminescent Response to thermal neutrons of mixture of $CaSO_4$: Tm and non-luminous $^6LiF$. Journal of Nuclear Science and Technology 1977;14(4):292-299   DOI
3 Beach JL, Huang CY. Mixed Field Dosimetry with $CaSO_4$(Tm)Li. Health physics, Pergamon Press 1976;31:452-455
4 Yang JS et al. Developmen of Phosphors-compound $CaSO_4$:Dy (KCT-300) TL pellets. Journal of the Korean Nuclear Society. 2002;34(2):142-145
5 양정선, 김두영, 김장렬, 임길성, 장시영. $CaSO_4:Dy$ TL 물질에 Li 화합물을 첨가한 중성자 측정용 소자의 제작. 추계학술발표회논문집한국원자력학회 2003
6 Morgan MD, Lacombe MA, and Stoebe TG. Development of a thermal neutron dosemeter utilizing the $CaSO_4$:Dy system. Radiat. Prot. Dosim. 1984;6(1-4):321-324
7 양정선, 김두영, 김장렬, 이정일, 남영미, 장시영. Fabrication and TL Characteristics of $CaSO_4:Dy$ TL Powder. 한국원자력학회 춘계학술대회 2001
8 Mayhugh MR, Watanabe S and Muccillo R. Proc. Third Int. Conf. Lum. Dosimetry, Riso, Denmark. 1971;3:1040
9 Shinde SS and Shastry SS. Journal of Applied Radiation and Isotopes. 30:75-77
10 Ayyangar K, Chandra B and Lakshmanan AR. Mixed field dosimetry with $CaSO_4$:Dy. Phys. Med.Biol. 1974;19(5):656-664   DOI   ScienceOn