$Al_2O_3$ 열형광(熱螢光) 특성(特性)을 이용(利用)한 감마선(線)의 측정(測定) 및 임상응용(臨床應用)

• Chu, Seong-Sil (Department of Radiology, College of Medicine, Yonsei University) ;
• Park, Chang-Yoon (Department of Radiology, College of Medicine, Yonsei University)
• 추성실 (연세대학교 의과대학 방사선과학교실) ;
• 박창윤 (연세대학교 의과대학 방사선과학교실)
• Published : 1984.06.20

Abstract

The properties of $Al_2O_3$ thermoluminescent phosphor have been observed to apply for gamma dosimetry in vivo. Glow peaks at 380, 420, 490 kelvin temperature with emission in the blue region have been detected and calculated as 1.4 eV the activation energy by means of heat response rising time method. Sensitization and supralinearity in $Al_2O_3$ phosphor could be consistently explained by the deep trap model. Studies of the thermoluminescence growth rate with gamma ray exposure showed linearly to $10^4$ Roentgen and then supralinear rate detected 1.2 power of exposure dose sensitization of $Al_2O_3$ is described five times more than TLD-100 and the fading time is shorter and then tried to apply for gamma dosimetry in vivo.