【摘要】 用四参量关联实验技术研究了２５２Ｃｆ冷裂变瞬发γ射线发射性质。孪生屏栅电离室收集极和栅极信号分别用于确定碎片的动能和发射角。圆柱形电离室轴线上的ＮａＩ（Ｔ１）晶体用于符合记录裂变瞬发γ射线．结果表明，不仅冷裂变瞬发γ射线角分布系数约为正常二分裂变值的两倍，而且冷裂变轻碎片发射的γ射线数目几乎是重碎片发射数目的三倍．对后一实验事实目前尚未有满意的理论解释．更多还原

【Abstract】 The behaviour of prompt γ-ray emission in the cold fission of 252Cf was investigated experimentally using a four-parameter correlation technique. A twin gridded ionization chamber was employed to detect the fission signals and to determinethe fragment emission angles, and a φ10cm×10cm NaI(T1) detector was used torecord the γ-ray energies. The result shows that the angular distribution coefficientof γ-rays emitted in cold fission is twice as large as that in the normal fission.The fact that in the cold fission the number of γ-rays emitted from the light fragments is approximately three times as large as that from the heavy ones can notbe explained satisfactorily so far.更多还原