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논문 기본 정보

자료유형
학술저널
저자정보
Park, Chang-Young (Department of Physics and Research Institute of Natural Science, Gyeongsnag National University) Park, Young-Kook (Department of Physics and Research Institute of Natural Science, Gyeongsnag National University) Chung, Ki-Soo (Department of Physics and Research Institute of Natural Science, Gyeongsnag National University) Lee, Jong-Duk (College of Interdisciplinary and Creative Studies, Konyang University) Lee, Jungil (Korea Atomic Energy Research Institute) Kim, Jang-Lyul (Korea Atomic Energy Research Institute)
저널정보
대한방사선방어학회 방사선방어학회지 방사선방어학회지 제43권 제4호
발행연도
2018.1
수록면
160 - 169 (10page)

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Background: This study aims to develop an integrated optical system that can simultaneously or selectively measure the signals obtained from radioluminescence (RL), thermoluminescence (TL), and optically stimulated luminescence (OSL), which are luminescence phenomena of materials stimulated by radioactivity, heat, and light, respectively. The luminescence mechanism of various materials could be investigated using the glow curves of the luminescence materials. Materials and Methods: RL/TL/OSL integrated measuring system was equipped with a X-ray tube (50 kV, $200{\mu}A$) as an ionizing radiation source to irradiate the sample. The sample substrate was used as a heating source and was also designed to optically stimulate the sample material using various light sources, such as high luminous blue light emitting diode (LED) or laser. The system measured the luminescence intensity versus the amount of irradiation/stimulation on the sample for the purpose of measuring RL, TL and OSL sequentially or by selectively combining them. Optical filters were combined to minimize the interference of the stimulation light in the OSL signal. A long-pass filter (420 nm) was used for 470 nm LED, an ultraviolet-pass filter (260-390 nm) was used for detecting the luminescence of the sample by PM tube. Results and Discussion: The reliability of the system was evaluated using the RL/OSL characteristics of $Al_2O_3:C$ and the RL/TL characteristics of LiF:Mg,Cu,Si, which were used as dosimetry materials. The RL/OSL characteristics of $Al_2O_3:C$ showed relatively linear dose-response characteristics. The glow curve of LiF:Mg,Cu,Si also showed typical RL/OSL characteristics. Conclusion: The reliability of the proposed system was verified by sequentially measuring the RL characteristics of radiation as well as the TL and OSL characteristics by concurrent thermal and optical stimulations. In this study, we developed an integrated measurement system that measures the glow curves of RL/TL/OSL using universal USB-DAQs and the control program.
#Radioluminescence #Thermoluminescence #Optically stimulated luminescence #Dosimetry #Luminescence mechanism

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참고문헌 (11)

참고문헌 신청
Chen R / 2011 / Thermally and Optically Stimulated Luminescence / Wiley :7~28 google schola Huntley DJ / 1985 / Optical dating of sediments / Nature 313:105~107 google schola Yukihara EG / 2011 / Optically Stimulated Luminescence:Fundamentals and Applications / Wiley :14~33 google schola McKeever SWS / 1985 / Thermoluminescence of Solids / Cambridge University Press :40~63 google schola Damkjær SMS / 2008 / Improved real-time dosimetry using the radioluminescence signal from Al2O3:C / Radiat. Meas 43(2-6):893~897 google schola

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