Publications

Re cently, there have been sev eral sig nif i cant im prove ments in the area of the ra di a tion de tec - tion system and its instruments, especially those using scin tillation or semicon duc tor gamma ray de tec tors. Sci en tists and tech ni cians are in ter ested in study ing this prog ress, which can be use ful for the de tec tor's op er a tion and its ba sic prop er ties, such as en ergy, shape, and ef fi - ciency cal i bra tion. In this work, an ex tended study of var i ous math e mat i cal for mu las was con - ducted to ob tain the ef fi ciency best-fit ting func tion, that cov ers the mea sured val ues from low to high en ergy re gions. They can be used to rep re sent the ef fi ciency of a high-pu rity ger ma - nium de tec tor in the re gions where ac cu racy and max i mum speed in op ti miz ing the cal i bra - tion pro cess are very im por tant for gamma spec tros copy. De ter mi na tion of the ac tiv ity of en - vironmen tal samples mainly depends on the efficiency calibration curve of the detec tion sys tem. The gamma ray en ergy in the range from 59.54 up to 1408.01 keV used in this work was ob tained by us ing a set of stan dard ra dio ac tive gamma ray sources of cer ti fied in ten sity. The cur rent data anal y sis shows that most of the math e mat i cal for mu las, which rep re sent the fit ting curve for the de tec tor full-en ergy peak ef fi ciency, were quite agree able with the ex per i - mental results.