کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8209561 | 1532091 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
PGNAA system preliminary design and measurement of In-Hospital Neutron Irradiator for boron concentration measurement
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A prompt gamma neutron activation analysis (PGNAA) system has been recently developed at the 30-kW research reactor In-Hospital Neutron Irradiator (IHNI) in Beijing. Neutrons from the specially designed thermal neutron beam were used. The thermal flux of this beam is 3.08Ã106Â cmâ2Â sâ1 at a full reactor power of 30Â kW. The PGNAA system consists of an n-type high-purity germanium (HPGe) detector of 40% efficiency, a digital spectrometer, and a shielding part. For both the detector shielding part and the neutron beam shielding part, the inner layer is composed of 6Li2CO3 powder and the outer layer lead. The boron-10 sensitivity of the PGNAA system is approximately 2.5Â cps/ppm. Two calibration curves were produced for the 1-10Â ppm and 10-50 ppm samples. The measurement results of the control samples were in accordance with the inductively coupled plasma atomic emission spectroscopy (ICP-AES) results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 106, December 2015, Pages 161-165
Journal: Applied Radiation and Isotopes - Volume 106, December 2015, Pages 161-165
نویسندگان
Zizhu Zhang, Yizheng Chong, Xinru Chen, Congjun Jin, Lijun Yang, Tong Liu,