Study a Study and Intercomparison of Radiation Measurement Characteristics for OSLD and TLD-LiF

• Main Authors: Tzu-Ling Kao, 高紫綾
• Other Authors: Shann-Horng Yeh
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/97172556310155380416

碩士 === 慈濟技術學院 === 放射醫學科學研究所 === 101 === Thermoluminescent dosimeters(TLD) have been widely used in personal, environmental and medical dosimetry for several decades. Owing to the progress of crystalized techniques, a new luminescent material of aluminum oxide doped with carbon (Al2O3:C) was developed successfully by LandauerInc. in 1996. The optically stimulated luminescent dosimeter(OSLD)possesses several advantages such as stimulated by light, fast readout, wide dose range of detectable, high sensitivity and re-estimation of radiation. This research studied and compared the radiation detection characteristics of InLight nanoDotTM OSLD and TLD-LiF:Mg.Cu,P (TLD-100H). The radiation characteristics studied in this research include batch variance, reproducibility, linearity of radiation dose and stimulated light, photon energy dependence, angular dependence and fading effect etc.. The results of this researchrevealed that OSLD possesses better radiation characteristics in batch variance. The response reproducibility of OSLD is better than that of TLD-100H. The linearity of both OSLD and TLD-100H to radiation dose is excellent. The photon energy dependence of OSLD is higher than that of TLD-100H. OSLD has better angular dependence than that of TLD-100H. The fading of OSLD and TLD-100H are insignificant within 30 days. This study shows that OSLD possessed excellent radiation detection characteristics as compared with that of TLD-100H. OSLD will be one of the most attractive radiation dosimeter in the application of personal, environmental and medical radiation measurement.