DETERMINATION OF THE DEFORMATION OF /cap alpha/-ACTIVE NUCLEI AND THEIR QUADRUPOLARIZATION ON BASIS OF THE /cap alpha/-PARTICLE ENERGY AND ANGULAR DISTRIBUTIONS

The alpha -decay theory for nonspherical nuclei developed previously was employed to treat the experimental data on the relative fine structure line intensities of the alpha rays, half lives, and angular distributions of alpha particles emitted by oriented nuclei. The dependence of the nuclear deformation on atomic weight in the region A> 220 was deduced from fine structure duta. It is shown that by taking into account the effect of these deformations on the half lives it is possible to remove the discrepancies between the variation of alpha - active nuclear radii and the predictions of the alpha -decay theory. Quadrupolarization of the parent U/sup 233/ nuclei was determined in the corresponding experiments from the angular distribution of the alpha particles. (auth)