Measurement of Neutron Spectrum in Medium Containing Hydrogen
Measurement of Neutron Spectrum in Medium Containing Hydrogen
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DOI：
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发表时间：
2004
影响因子：
1.3
通讯作者：
Zhu Chuanxin
中科院分区：
文献类型：
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作者：
Zhu Chuanxin
设立了两个基准。一个是含有氢的缓和壳，直径为34厘米。另一种是由外壳和24 cm×30 cm的聚乙烯圆柱体组合而成。利用加速器的d-T聚变源，对外部入射中子进行了1 MeV以上中子能谱随实验装置不同位置变化的测量。同时，对光谱进行积分谱变换。采用18 mm×20 mm二苯乙烯晶体闪烁探测器测量中子能谱。在0.95置信水平下，测量的不确定度为4.8%。
Two benchmarks were established. One is moderation shell containing hydrogen which is 34 cm in diameter. The other is composed of the shell and polyethylene cylinder of 24 cm×30 cm which are combinatorial. Measurement of neutron energy spectrum above 1 MeV changing with different positions of the experimental assemblies were carried out for incident neutrons from outside using d-T fusion source of accelerator. Meanwhile, the spectra were transformed integral spectrum. The scintillation detector of stilbene crystal of 18 mm×20 mm was used to measure neutron spectrum. At 0.95 level of confidence, the uncertainty of the measurement is 4.8%.