Spontaneous Fission Neutron Spectrum of Cf 252
Spontaneous Fission Neutron Spectrum of Cf 252
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Cf 252 自发裂变中子能谱
DOI：
10.1103/physrev.108.411
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发表时间：
1957
期刊：
影响因子：
--
通讯作者：
J. Roberts
中科院分区：
文献类型：
--
作者：
A. Smith;P. Fields;J. Roberts
测量了${\mathrm{Cf}}^{252}$在0.2 ～ 7.0 Mev范围内的自发裂变中子能谱。飞行时间技术用于确定光谱的低能量部分，而质子反冲在乳剂中用于研究高能中子。测量的中子能谱在实验精度范围内由经验关系式$N(E)\ensuremath{\propto}\mathrm{exp}[\ensuremath{-}0.88E(\mathrm{Mev})]sinh{[2.0E(\mathrm{Mev})]}^{\frac{1}{2}}$描述，其中$N(E)$为单位能量区间内能量为$E$的中子数。实验结果与理论计算的${\mathrm{Cf}}^{252}$裂变中子谱进行了比较。
The spontaneous fission neutron spectrum of ${\mathrm{Cf}}^{252}$ from 0.2 to 7.0 Mev has been measured. Time-of-flight techniques were employed to determine the lower energy portion of the spectrum while proton recoils in emulsions were used to study the higher energy neutrons. The measured neutron spectrum is, within the experimental accuracy, described by the empirical relation $N(E)\ensuremath{\propto}\mathrm{exp}[\ensuremath{-}0.88E(\mathrm{Mev})]sinh{[2.0E(\mathrm{Mev})]}^{\frac{1}{2}}$, where $N(E)$ is the number of neutrons of energy $E$ per unit energy interval. The experimental results are compared with the theoretically determined ${\mathrm{Cf}}^{252}$ fission neutron spectrum.