WING和FONG的核素质量公式的一项的改进

从液滴模型出发得到的抛物线型的核素质量公式为M=M_0+1/3b_A(Z—Z_0)~2+P_s-S.对于奇A核Wing和Fong给出, b_A=M(Z,A)-2M(Z+1,A)+M(Z+2,A)的表达式。本文仔细地分析该式在11≤A≤253范围和实验符合程度。根据分析,我们发现取如下形式比较好 b_A=M(Z_0-1,A)-2M(Z_0,A)+M(Z_0+1,A) 同时给出b_A计算公式: b_A=(2.865-48.2524A~(1/2)+370.42A~(-1))(Z-Z_0)~2 从而使Wing和Fong的质量公式得到改进

AN IMPROVEMNT UPON ONE TERM AMONG THE WING—FONG NUCLEAR MASS FORMULA

The mass formula of the Parabola type, by starting with the liquid drop model, is thus: M=M_0+(1/2)b_A(Z-Z_0)~2+P_A-S For odd-A nuclei, the equation of b_A by Wing and Fong is as follows: b_A=M(Z,A)-2M(2+1,A)+M(Z+2,A) Using the equation above, we have calculated b_A values to fit the experimental data within 11≤A≤253. Having analyzed the results carefully, we have found that it would be batter to take such as form: b_A=M(Z_0-1,A)-2M(Z_0,A)+M(Z_0+1,A) A calculated formula of b_A given in this article is: b_A=(2.865-48.2524 A~(-(1/2))+370. 42A~(-1)(Z-Z_0)~2 Thus, Wing′s and Fong′s formula is improved.