A method to measure prompt fission neutron spectrum using gamma multiplicity tagging

被引：6
|
作者：
Blain, E. [1 ]
Daskalakis, A. [1 ]
Block, R. C. [1 ]
Barry, D. [1 ]
Danon, Y. [1 ]
机构：
[1] Rensselaer Polytech Inst, Gaerttner LINAC Ctr, Troy, NY 12180 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 805卷
关键词：
Fission; Spectrum; Measurement; SCIENCE;
D O I：
10.1016/j.nima.2015.08.060
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In order to improve on current prompt fission neutron spectrum measurements, a gamma multiplicity tagging method was developed at the Rensselaer Polytechnic Institute Gearttner Linear Accelerator Center. This method involves using a coincidence requirement on an array of BaF2 gamma detectors to determine the timing of a fission event. This allows for much larger fission samples to be used due to the higher penetrability of gammas compared to fission fragments. Additionally, since the method relies on gammas as opposed to fission fragments, the effects of the low level discriminator, used in fission chambers to eliminate alpha events, are not seen. A Cf-252 fission chamber was constructed in order to determine the viability of this method as well as the efficiency when compared to a fission chamber. The implemented multiple gamma tagging method was found to accurately reproduce the prompt fission neutron spectrum for the spontaneous fission of Cf-252 and to detect 30% of fission events. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：95 / 100
页数：6
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