高通量D-D中子Generator中铟箔辐射俘获聚乙烯的积分实验
An Integral Experiment on Polyethylene Using Radiative Capture in Indium Foils in a High Flux D-D Neutron Generator
摘要：
加州大学伯克利分校核工程系建造了一台D-D中子发生器，称为高通量中子发生器（HFNG）。它在100-125 keV的加速电压范围内工作。发生器产生的中子流约为每秒10^8个。这些中子的能量在2.2-2.8 MeV之间。我们在这里报告的测量结果的散射与未散射的中子注量聚乙烯确定通过中子活化的多个天然铟箔从D-D中子发生器。角积分谱和角微分谱的计算结果与用蒙特卡罗N粒子输运程序（MCNP）的ENDF/B-VII.1的预测结果一致。这支持屏蔽计算的快能区与高密度聚乙烯（HDPE）。据我们所知，没有使用D（D，n）α中子谱对聚乙烯进行积分基准实验。
英文摘要：
The Department of Nuclear Engineering, University of California Berkeley built a D-D neutron generator called the High Flux Neutron Generator (HFNG). It operates in the range of 100-125 keV of accelerating voltage. The generator produces neutron current of about 10^8 per second. These neutrons have energies between 2.2-2.8 MeV. We report here the results of a measurement of the scattered vs unscattered neutron fluence on polyethylene determined via neutron activation of multiple natural indium foils from a D-D neutron generator. Both the angle-integrated spectrum and the angle differential results are consistent with the predictions of the Monte Carlo N-Particle Transport (MCNP) code, using the ENDF/B-VII.1. This supports shielding calculations in the fast energy region with high density polyethylene (HDPE). To the best of our knowledge no integral benchmark experiment has been performed on polyethylene using D(D,n)alpha neutron spectrum.
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