LiF(Mg, Cu, Na, Si) Thermoluminescent Dosimeters for In-phantom Dosimetry of $^{60}Co\;{\gamma}$-rays

LiF(Mg, Cu, Na, Si) 열형광선량계를 사용한 $^{60}Co\;{\gamma}^-$선의 수중 흡수선량 측정

  • Kim, Hyun-Ja (Department of Physics, Pusan National University) ;
  • Chung, Woon-Hyuk (Department of Physics, Pusan National University) ;
  • Lee, Woo-Gyo (Department of Applied Physics, National Fisheries University of Pusan) ;
  • Doh, Sih-Hong (Department of Applied Physics, National Fisheries University of Pusan)
  • 김현자 (부산대학교 물리학과) ;
  • 정운혁 (부산대학교 물리학과) ;
  • 이우교 (부산수산대학 응용물리학과) ;
  • 도시홍 (부산수산대학 응용물리학과)
  • Published : 1990.12.25

Abstract

Newly developed LiF(Mg, Cu, Na, Si) thermoluminescence phosphors sealed in a plastic capsules (32mm dia., 0.9mm wall thickness) were used for in-phantom dosimetry of $^{60}Co$ $\gamma$-irradiation. The absorbed doses in water were determined by applying the general cavity theory to the absorbed dose in TLD cavity, which was computed from exposure. The absorbed doses at various sites in the water-phantom were measured by LiF(Mg, Cu, Na, Si) TLD and compared with doses obtained by the ionization method. Both results were consistent within the experimental fluctuation$({\pm}3%)$ Central axis percentage depth doses and phantom-air ratios measured by LiF(Mg. Cu, Na, Si) TLD showed good agreement with the published values[Br. J. Radiology, Suppl. 17(1983)].