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引言 对14MeV中子诱发~(238)U裂变的质量分布已做了很多研究,这是因为氘-氚聚变反应(D+T→n+α)提供了一个极好的14MeV的单能中子源。但对其它单能中子诱发~(238)U裂变的质量分布研究得就不够充分,已报道的结果中有些彼此分歧较大。我们用放化法测量了D(d,n)~3He反应产生的5MeV中子诱发~(238)U裂变时几个核素的绝对产额。
INTRODUCTION Much research has been done on the mass distribution of ~ (238) U fission induced by 14 MeV neutrons because the deuterium-tritium fusion reaction (D + T → n + α) provides an excellent 14MeV monoenergetic neutron source. However, the mass distribution of ~ (238) U fission induced by other monoenergetic neutrons has not been sufficiently studied, and some of the reported results differ greatly from each other. We used the radiochemical method to measure the absolute yield of several nuclides when the 5MeV neutron induced ~ (238) U fission produced by D (d, n) ~ 3He reaction.