Interaction potentials and ultracold scattering cross sections for the $^7$Li$^+$-$^7$Li ion-atom system
Phys. Rev. A 101, 052702 (2020) We calculate the isotope independent Li$^+$-Li potential energy curves for the electronic ground and first excited states. Scattering phase shifts and total scattering cross section for the $^7$Li$^+$-$^7$Li collision are calculated with emphasis on the ultra-low ener...
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Zusammenfassung: | Phys. Rev. A 101, 052702 (2020) We calculate the isotope independent Li$^+$-Li potential energy curves for
the electronic ground and first excited states. Scattering phase shifts and
total scattering cross section for the $^7$Li$^+$-$^7$Li collision are
calculated with emphasis on the ultra-low energy domain down to the $s$-wave
regime. The effect of physically motivated alterations on the calculated
potential energy curves is used to determine the bound of accuracy of the
low-energy scattering parameters for the ion-atom system. It is found that the
scattering length for the A$^2\Sigma_u^+$ state, $a_u$ = 1325 a$_0$, is
positive and has well-constrained bounds. For the X$^2\Sigma_g^+$ state, the
scattering length, $a_g$ = 20465 a$_0$ has a large magnitude as it is sensitive
to the restrained change of the potential, due to the presence of a vibrational
state in the vicinity of the dissociation limit. |
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DOI: | 10.48550/arxiv.2005.09102 |