کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5486569 | 1399467 | 2017 | 8 صفحه PDF | دانلود رایگان |
We present the development of a CeBr3 gamma ray spectrometer with the primary objective of determining the abundance and distribution of Th, U, K, Fe, Al and Si by measuring gamma ray signals produced by radioactive decay, neutron inelastic scattering and neutron capture reactions in the energy region 0.03-8 MeV. The energy resolution of the CeBr3 gamma ray spectrometer developed in-house has been measured at 662 and 1274 keV to be 4.0% and 2.8% respectively. The intrinsic activity count-rate for the 1â³Â à1â³ CeBr3 gamma ray spectrometer is â¼0.03 counts sâ1 for the 40K energy window (1400-1520 keV), and â¼0.001 counts sâ1 for the 232Th (2550-2700 keV) energy window. The U concentration of a sample (3A) from a granite rock was estimated to be â¼2.1 ppm and agrees with the 2.04 ppm value determined using a HPGe gamma ray spectrometer. The K concentration of sample 3A was estimated to be 3.8%, and is consistent with the 3.7% value determined independently using a HPGe gamma ray spectrometer.
Journal: Advances in Space Research - Volume 60, Issue 6, 15 September 2017, Pages 1307-1314