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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Han-Soo (Korea Atomic Energy Research Institute) Park, Se-Hwa (Korea Atomic Energy Research Institute) Kim, Yong-Kyun (Korea Atomic Energy Research Institute) Ha, Jang-Ho (Korea Atomic Energy Research Institute) Cho, Seung-Yeon (Department of Environmental Engineering, Yonsei University)
저널정보
대한방사선방어학회 방사선방어학회지 방사선방어학회지 제31권 제3호
발행연도
2006.1
수록면
149 - 153 (5page)

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An ionization chamber is still widely used in many fields by virtue of its' simple operational characteristics and the possibility of its' various shapes. A parallel type of an ionization chamber for a steel sheet thickness measurement was designed and fabricated. High pure xenon gas, which was pressurized up to 6 atm, was chosen as a filling gas to increase the current response and sensitivity for a radiation. A high pressure gas system was also constructed. The active volume and the incident window size of the fabricated ionization chamber were $30\;cm^3\;and\;12\;cm^2$, respectively. Preliminary tests with a 25 mCi $^{241}Am$ gamma-ray source and evaluation tests in a standard X-ray field were performed. The optimal operation voltage was set from the results of the collection efficiency calculation by using an experimental two-voltage method. Linearity for a variation of the steel sheet thickness, which is the most important factor for an application during a steel sheet thickness measurement, was 0.989 in this study.

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