7 research outputs found
Coulomb interaction between a spherical and a deformed nuclei
We present analytic expressions of the Coulomb interaction between a
spherical and a deformed nuclei which are valid for all separation distance. We
demonstrate their significant deviations from commonly used formulae in the
region inside the Coulomb radius, and show that they remove various
shortcomings of the conventional formulae.Comment: 7 pages 4 figure
Applicability of the orientation average formula in heavy-ion fusion reactions of deformed nuclei
In heavy-ion fusion reactions involving a well deformed nucleus, one often
assumes that the orientation of the target nucleus does not change during the
reaction. We discuss the accuracy of this procedure by analyzing the excitation
function of the fusion cross section and the fusion barrier distribution in the
reactions of Sm target with various projectiles ranging from C
to Ar. It is shown that the approximation gradually looses its accuracy
with increasing charge product of the projectile and target nuclei because of
the effects of finite excitation energy of the target nucleus. The relevance of
such inaccuracy in analyzing the experimental data is also discussed.Comment: 5 pages and 3 figure