Study of the systematic behavior ofβ2values with theP-factor

The systematic behavior of ${\mathrm{\beta }}_2$ values with respect to the parameter P=${\mathit{N}}_{\mathit{p}}$ ${\mathit{N}}_{\mathit{n}}$/(${\mathit{N}}_{\mathit{p}}$+${\mathit{N}}_{\mathit{n}}$) is examined, and it is found that the rate of increase of ${\mathrm{\beta }}_2$/${\mathrm{\beta }}_2$ sp as a function of P is the same in all mass regions. A new method for predicting ${\mathrm{\beta }}_2$ values which exploits this relationship is described. This method is particularly useful for predicting ${\mathrm{\beta }}_2$ values in a region of well-deformed nuclei where no values have yet been measured, such as the region near ${}_{}{}^{130}{}_{}{}^{}\mathrm{Sm}$.