Suppression of the elastic scattering cross section for 17Ne + 208Pb system
arXiv (Cornell University)(2023)
摘要
We investigated the elastic scattering, inelastic scattering, breakup
reaction, and total fusion reactions of 17Ne + 208Pb system using the optical
model (OM) and a coupled channel (CC) approaches. The aim of this study is to
elucidate the suppress of the elastic cross-section that is invisible in
proton-rich nuclei such as 8B and 17F projectiles but appears in neutron-rich
nuclei such as 11Li and 11Be projectiles. The results revealed that this
suppression was caused mainly by the nuclear interaction between the projectile
and target nucleus rather than the strong Coulomb interaction observed in
neutron-rich nuclei and the contributions of Coulomb excitation interaction due
to two low-lying E2 resonance states are relatively small. From the
simultaneous chi-square analysis of the 17Ne + 208Pb system, we can infer a
strong suppression effect in the elastic scattering cross-section due to the
nuclear interaction between the projectile and target nucleus, rather than the
Coulomb interaction as observed in neutron-rich nuclei. Also, the contribution
of the direct reaction, comprising the inelastic scattering and breakup
reaction cross-sections, accounted for almost half of the total reaction.
Finally, we perform the CC calculation using the parameters obtained from our
OM calculation but our CC calculations could not explain the 15O production
cross section.
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关键词
17ne,elastic,cross section
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