A field determination method of D-T neutron source yields based on oxygen prompt gamma rays

• Published in: Nuclear engineering and technology Vol. 55; no. 7; pp. 2572 - 2577
• Main Authors: Zhang, Xiongjie, Tang, Bin, Nian, Geng, Wang, Haitao, Zhang, Lijiao, Zhang, Yan, Chen, Rui, Liu, Zhifeng, Qu, Jinhui
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2023; Elsevier; 한국원자력학회
• Subjects: D-T neutron source; N-γtransport equation; Neutron yield; Oxygen prompt gamma rays; 원자력공학; Oxygen prompt gamma rays; D-T neutron source; N-γtransport equation; Neutron yield
• ISSN: 1738-5733; 2234-358X
• DOI: 10.1016/j.net.2023.03.013

A field determination method for small D-T neutron source yield based on the oxygen prompt gamma rays was established. A neutron-gamma transport equation of the determination device was developed. Two yield field determination devices with a thickness of 20 mm and 50 mm were made. The count rates of the oxygen prompt gamma rays were calculated using three energy spectra processing approaches, which were the characteristic peak of 6.13 MeV, the overlapping peak of 6.92 MeV and 7.12 MeV, and the total energy area. The R-square of the calibration curve is better than 94% and the maximum error of the yield test is 5.21%, demonstrating that it is feasible to measure the yield of D-T neutron source by oxygen prompt gamma rays. Additionally，the results meet the requirements for field determination of the conventional D-T neutron source yield.