Thermal properties of a fiber-optic radiation sensor for measuring gamma-rays in high-temperature conditions
A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-rays accurately in elevated temperature conditions. Throughout this study, a LYSO:Ce crystal was employed as a sensing m...
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| Published in | Journal of the Korean Physical Society Vol. 66; no. 1; pp. 46 - 50 |
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| Main Authors | , , , , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Seoul
The Korean Physical Society
2015
한국물리학회 |
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| Abstract | A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-rays accurately in elevated temperature conditions. Throughout this study, a LYSO:Ce crystal was employed as a sensing material of the FORS due to its high light yield (32,000 photons/MeV), fast decay time (≤ 47 ns) and high detection efficiency. Although the LYSO:Ce crystal has many desirable qualities, the thermoluminescence (TL) should be eliminated by using a heat annealing process because the light yield of the LYSO:Ce crystal varies with its TL. In this study, therefore, we obtained the TL curve of the LYSO:Ce crystal by increasing the temperature up to 280 ℃, and we demonstrated that almost all of the TL of the LYSO:Ce crystal was eliminated by the heat annealing process. |
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| AbstractList | A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-rays accurately in elevated temperature conditions. Throughout this study, a LYSO:Ce crystal was employed as a sensing material of the FORS due to its high light yield (32,000 photons/MeV), fast decay time (≤ 47 ns) and high detection efficiency. Although the LYSO:Ce crystal has many desirable qualities, the thermoluminescence (TL) should be eliminated by using a heat annealing process because the light yield of the LYSO:Ce crystal varies with its TL. In this study, therefore, we obtained the TL curve of the LYSO:Ce crystal by increasing the temperature up to 280 ℃, and we demonstrated that almost all of the TL of the LYSO:Ce crystal was eliminated by the heat annealing process. A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium(LYSO:Ce) scintillator crystal and a silica optical fiber (SOF) to measure gamma-raysaccurately in elevated temperature conditions. Throughout this study, a LYSO:Ce crystal wasemployed as a sensing material of the FORS due to its high light yield (32,000 photons/MeV),fast decay time ( 47 ns) and high detection efficiency. Although the LYSO:Ce crystal has manydesirable qualities, the thermoluminescence (TL) should be eliminated by using a heat annealingprocess because the light yield of the LYSO:Ce crystal varies with its TL. In this study, therefore,we obtained the TL curve of the LYSO:Ce crystal by increasing the temperature up to 280 C,and we demonstrated that almost all of the TL of the LYSO:Ce crystal was eliminated by the heatannealing process. KCI Citation Count: 0 |
| Author | Lee, Bongsoo Park, Byung Gi Sim, Hyeok In Shin, Sang Hun Jang, Jae Seok Jeon, Dayeong Yoo, Wook Jae Moon, Joo Hyun Hong, Seunghan Kim, Seon Geun Jang, Kyoung Won |
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| Keywords | Fiber-optic radiation sensor Gamma-ray spectroscopy Temperature LYSO Thermoluminescence |
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| Snippet | A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium (LYSO:Ce) scintillator crystal and a silica optical fiber... A fiber-optic radiation sensor (FORS) was fabricated using a cerium-doped silicate-yttriumlutetium(LYSO:Ce) scintillator crystal and a silica optical fiber... |
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| SubjectTerms | Mathematical and Computational Physics Particle and Nuclear Physics Physics Physics and Astronomy Theoretical 물리학 |
| Title | Thermal properties of a fiber-optic radiation sensor for measuring gamma-rays in high-temperature conditions |
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