【摘要】 用放化法测定了²⁵²Cf自发裂变中^133mTe和^133gTe的分累计产额,其值分别为FCY(^133mTe)=0.533±0.014,FCY(^133gTe)=0.291±0.042。计算得到^133mTe与^133gTe分独立产额比R=3.5,由此导出¹³³Te初始碎块均方根角动量为8.8h。FCY(^133m+gTe)值与A.C.Wahl的电荷分布系统学预报值在误差范围内一致。N=82中子壳和质子对效应对A=131～141质量区电荷分布没呈现出明显影响。更多还原

【Abstract】 The fractional cumulative yields (FCY ) of 133mTe and I33gTe in the spontaneous fission of 2B2Cf have been determined by the radiochemical method.The values are 0.533?.014 and 0.291+0.042 respectively. The ratio of fractional indepeadeat yield of 133nTe to 133*Te was found to be /?=3.5 by using the measured fractional cumulative yields of 133lTe and 133gTe. From, these results the initial fragment angular momentum of root-mean-square of 13iTe, J,.m.,s=8-.(B>i ’bas been deduced. The FCF of i?n+玊e determined in this work is i’n good agreement with the expectation value derived from Wahl’s system-Sties of nuclear charge distribution in the fission. In the mass region of A = 131~141, there is no obvious effect of N = 82 neutron shell and proton pairing effects on the nuclear charge distribution.更多还原