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J Radiat Prot > Volume 38(2);2013 > Article
Journal of Radiation Protection 2013;38(2):119. doi: https://doi.org/10.14407/jrp.2013.38.2.119
HPGe 검출기를 사용한 감마분광분석계의 점검선원 개발
이모성;
Development of a simple laboratory-made radioactive source to check the integrity of a gamma spectrometry system with HPGe detector
Lee, Mo Sung;
ABSTRACT
A simple laboratory-made radioactive source to check the integrity of a gamma spectrometry system with HPGe detector was developed. The check source consists of radium-riched soil which was ground in size of less than 0.154mm and contained in air tight cylinderical vial, and provides photons with 12 distinct energies. The spectra of the check source were measured once a month during one year, analyzed the charactreictics of their peaks. When the gamma spectrometry system was in normal state, the areas and FWHMs of the gamma rays with more than 3% gamma emission rate in radium and its decay products was constant within standard deviation 2% and 3%, respectively, except 77 keV peak. And it was found that this check source can play a sufficient role to check the integrity of a gamma spectrometry system using 10 peaks in the range of 77 to 2202 keV.
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