지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 3,421 - 3,430 (10page)
- DOI
- https://doi.org/10.1016/j.net.2021.04.017
이용수
초록· 키워드
오류제보하기
Spherical NaI(Tl) detectors are used in gamma-ray spectrometry, where the gamma emissions come fromthe nuclei with energies in the range from a few keV up to 10 MeV. A spherical detector is aimed to give agood response to photons, which depends on their direction of travel concerning the detector center.
Some distortions in the response of a gamma-ray detector with a different geometry can occur because ofthe non-uniform position of the source from the detector surface. The present work describes thecalibration of a NaI(Tl) spherical detector using both an experimental technique and a numericalsimulation method (NSM). The NSM is based on an efficiency transfer method (ETM, calculating theeffective solid angle, the total efficiency, and the full-energy peak efficiency). Besides, there is a highprobability for a source-to-detector distance less than 15 cm to have pulse coincidence summing (CS),which may occur when two successive photons of different energies from the same source are detectedwithin a very short response time. Therefore, g-g ray CS factors are calculated numerically for a152Euradioactive cylindrical source. The CS factors obtained are applied to correct the measured efficiencyvalues for the radioactive volumetric source at different energies. The results show a good agreementbetween the NSM and the experimental values (after correction with the CS factors)
목차
등록된 정보가 없습니다.
참고문헌 (25)
참고문헌 신청
L. Moens / 1981 / Calculation of the absolute peak efficiency of gamma-ray detectors for different counting geometries / Nucl. Instrum. Methods Phys. Res 187:451~472
H. -X. Shi / 2002 / Precise Monte Carlo simulation of gamma-ray response functions for an NaI(Tl)detector / Appl. Radiat. Isot 57:517~524
Y. Mian / 2015 / A nuclear density probe : isobaric yield ratio difference / Nucl. Sci. Tech 26:S20503
M. M. Gouda / 2015 / Calibration of well-type NaI(Tl) detector using a point sources measured out the detector well at different axial distances / J. Instrum 10:1088
M. I. Abbas / 2011 / Analytical expression to calculate total and fullenergy peak efficiencies for cylindrical phoswich and lanthanum bromide scintillation detectors / Radiat. Meas 46:440~445
H. -X. Shi / 2002 / Precise Monte Carlo simulation of gamma-ray response functions for an NaI(Tl)detector / Appl. Radiat. Isot 57:517~524
Y. Mian / 2015 / A nuclear density probe : isobaric yield ratio difference / Nucl. Sci. Tech 26:S20503
M. M. Gouda / 2015 / Calibration of well-type NaI(Tl) detector using a point sources measured out the detector well at different axial distances / J. Instrum 10:1088
M. I. Abbas / 2011 / Analytical expression to calculate total and fullenergy peak efficiencies for cylindrical phoswich and lanthanum bromide scintillation detectors / Radiat. Meas 46:440~445
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