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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 939 - 944 (6page)
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초록· 키워드
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The calibration methods of neutron-measuring devices such as the neutron survey meterhave advantages and disadvantages. To compare the calibration factors obtained by theshadow cone method and semi-empirical method, 10 neutron survey meters of fivedifferent types were used in this study. This experiment was performed at the KoreaAtomic Energy Research Institute (KAERI; Daejeon, South Korea), and the calibrationneutron fields were constructed using a 252Californium (252Cf) neutron source, which waspositioned in the center of the neutron irradiation room. The neutron spectra of the calibrationneutron fields were measured by a europium-activated lithium iodide scintillator incombination with KAERI's Bonner sphere system. When the shadow cone method wasused, 10 single moderator-based survey meters exhibited a smaller calibration factor by asmuch as 3.1e9.3% than that of the semi-empirical method. This finding indicates thatneutron survey meters underestimated the scattered neutrons and attenuated neutrons(i.e., the total scatter corrections). This underestimation of the calibration factor wasattributed to the fact that single moderator-based survey meters have an under-ambientdose equivalent response in the thermal or thermal-dominant neutron field. As a result,when the shadow cone method is used for a single moderator-based survey meter, anadditional correction and the International Organization for Standardization standard8529-2 for room-scattered neutrons should be considered.
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참고문헌 (12)
참고문헌 신청
B.H. Kim / 2010 / Response of several neutron measuring devices under the fractional change of thermal and fast neutrons / Radiat. Meas 45 : 1541 ~ 1543
C.M. Eisenhouer / 1985 / Calibration techniques for neutron personal dosimetry / Radiat. Prot. Dosim 10 : 43 ~ 57
C.M. Eisenhouer / 1987 / Effect of air scatter on calibration of instruments for detecting neutrons / Radiat. Prot. Dosim 19 : 77 ~ 84
C.M. Eisenhouer / 1989 / Review of scattering corrections for calibration of neutron instruments / Radiat. Prot. Dosim 28 : 253 ~ 262
H. Kluge / 1990 / Calibration of neutron sensitive spherical devices with bare and D2O-moderated 252Cf sources in rooms of different sizes, / Rad. Prot. Dosim 32 : 233 ~ 244
C.M. Eisenhouer / 1985 / Calibration techniques for neutron personal dosimetry / Radiat. Prot. Dosim 10 : 43 ~ 57
C.M. Eisenhouer / 1987 / Effect of air scatter on calibration of instruments for detecting neutrons / Radiat. Prot. Dosim 19 : 77 ~ 84
C.M. Eisenhouer / 1989 / Review of scattering corrections for calibration of neutron instruments / Radiat. Prot. Dosim 28 : 253 ~ 262
H. Kluge / 1990 / Calibration of neutron sensitive spherical devices with bare and D2O-moderated 252Cf sources in rooms of different sizes, / Rad. Prot. Dosim 32 : 233 ~ 244
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