Title:	Interaction potentials and ultracold scattering cross sections for the 7Li+-7Li ion-atom system
Authors:	Pandey, A. Niranjan, M. Joshi, N. Rangwala, S.A. +2 Co-Authors
Issue Date:	May-2020
Publisher:	American Physical Society
Citation:	Physical Review A, 2020, Vol.101, Article. No.052702, p10
Abstract:	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 7Li+-7Li 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 A2Σ+u state, au = 1325 a0, is positive and has well-constrained bounds. For the X2Σ+g state, the scattering length, ag = 20465 a0 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.
Description:	Open Access
URI:	http://hdl.handle.net/2289/7489
ISSN:	2469-9926 2469-9934 (online)
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2020PhRvA.101e2702P/abstract https://arxiv.org/abs/2005.09102 https://doi.org/10.1103/PhysRevA.101.052702
Copyright:	2020 American Physical Society
Appears in Collections:	Research Papers (LAMP)

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