secondary neutron 中文意思是什麼
secondary neutron
解釋
次級中子-
When the energy distribution of secondary neutron are represented by evaporation spectrum ( lf = 9 ), care must be taken in describing the nuclear temperature near the threshold
通過分析發現，評價次級中子能譜數據所採用的蒸發譜模型大都忽略了能級密度參數與激發能之間的關聯。 -
As well known, in the file 5 of endf - vi, the energy distribution of secondary neutron are represented by various analytical formulations
眾所周知，在評價核數據庫endf -版的文檔5中，次級中子能量分佈數據以不同的表達方式來描述。 -
The double differential cross section ( ddx ) of neutron emission from 51v at 10. 26 mev neutrons was measured using normal and abnormal fast neutron tof spectrometers on hi - 13 tandem accelerator in china institute of atomic energy ( ciae ). the problem of influence from breakup neutrons of the d ( d, n ) neutron source on secondary neutron spectra was successfully solved
用中國原子能科學研究院hi - 13串列加速器上的常規和非常規快中子飛行時間譜儀，測量了10 . 26mev中子引起~ （ 51 ） v的次級中子雙微分截面，成功解決了d （ d ， n ）中子源中破裂中子對次級譜的影響。 -
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這一能區，由於沒有合適的單能中子源（因為在這一能區，對于常規中子源如t （ p ， n ） ~ 3he和d （ d ， n ） ~ 3he中子源，除了單能中子以外，還有破裂中子成份，這部分源破裂中子在樣品上引起的次級中子，將嚴重影響測量結果） ，所以至今在8 ? 13mev能區這方面的測量數據極少。
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