source neutron中文什么意思

例句与用法

1. The method of numeral simulating the coincidence neutron detection is proposed with combining the neutron transportation and probabilistic calculation . the method is introduced and used to simulate the nuclear warhead induced fission by source neutrons with energy below 1 mev
   推导并提出用中子输运计算与概率方法结合计算符合中子计数，对能量低于1mev的外源中子照射核弹头诱发裂变的符合中子测量作了数值模拟。
2. In analyzing the neutron active detection , the neutron multiplication in the nuclear warheads induced by outer neutron source with different neutron energys is studied with numeral simulation , and the feasibility of through counting neutrons to determine the presence of high enrichment uranium ( heu ) in nuclear warhead has been proved . the method of detecting the warhead which contains heu pit by counting the released neut rons whose energy is higher than that of source neutron is studied . the feasibility of this method has been studied
   对几种主动探测核弹头方法进行的研究中，首先对不同能量各向同性外源中子照射核弹头的中子增殖行为进行了数值模拟，检验了用外源中子照射核弹头后，通过测量瞬发中子在核弹头中的增殖量，来证明核弹头中高浓铀存在的可行性；研究了用能量低于1mev的外中子源照射核弹头，用测量核弹头中裂变产生的高于源中子能量中子数的方法探测核弹头，通过数值模拟分析了可行性。
3. The measurement data is scarce in 8 - 13 mev region due to the lack of mono - energetic neutron sources ( in this region , there are breakup neutrons besides the mono - energetic neutrons in the often used neutron sources such as t ( p , n ) 3 he and d ( d , n ) 3he sources . the secondary neutrons induced by breakup source neutrons will seriously contaminate the secondary neutron spectra induced by mono - energetic source neutrons ) . therefore , precise measurement for some key nuclides is necessary to check the evaluations in this region
   但在8 ? 13mev这一能区，由于没有合适的单能中子源(因为在这一能区，对于常规中子源如t ( p , n ) ~ 3he和d ( d , n ) ~ 3he中子源，除了单能中子以外，还有破裂中子成份，这部分源破裂中子在样品上引起的次级中子，将严重影响测量结果) ，所以至今在8 ? 13mev能区这方面的测量数据极少。