Effect of channel coupling on the elastic scattering of lithium isotopes

Abstract

Herein, we investigated the channel coupling (CC) effect on the elastic scatterings of lithium (Li) isotopes ($A=$ 6--9) for the ${}^{12}$C and ${}^{28}$Si targets at $E/A=$ 50--60 MeV. The wave functions of the Li isotopes were obtained using the stochastic multi-configuration mixing (SMCM) method based on the microscopic-cluster model. The proton radii of the ${}^7$Li, ${}^8$Li, and ${}^9$Li nuclei became smaller as the number of valence neutrons increased. The valence neutrons in the ${}^8$Li and ${}^9$Li nuclei exhibited a glue-like behavior, thereby attracting the $\alpha$ and $t$ clusters. Based on the transition densities derived from these microscopic wave functions, the elastic-scattering cross section was calculated using a microscopic coupled-channel (MCC) method with a complex $G$-matrix interaction. The existing experimental data for the elastic scatterings of the Li isotopes and ${}^{10}$Be nuclei were well reproduced. The Li isotope elastic cross sections were demonstrated for the ${}^{12}$C and ${}^{28}$Si targets at $E/A$ =53 MeV. The glue-like effect of the valence neutrons on the Li isotope was clearly demonstrated by the CC effect on elastic scattering. Finally, we realize that the valence neutrons stabilized the bindings of the core parts and the CC effect related to core excitation was indeed reduced.

21 pages, 9 figures, 2 tables, accepted in Physical Review C

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Cited by in corpus (7)

• Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements
• Microscopic calculations of 6He and 6Li with real-time evolution method
• The study of the alpha formation probability in 10Be and 12Be within the microscopic cluster model
• Drastic change in inelastic scattering depending on the development of dineutron correlation in ${}^{10}$Be
• Relation between transition density and proton inelastic scattering by ${}^{12}$C target at $E_p=$ 65 and 200 MeV
• Systematic study for relation between nuclear structure and reaction in ${}^{10}$Be nucleus
• Investigation of the determination of nuclear deformation using high-energy heavy-ion scattering