Theoretical evaluation of the radiative lifetimes of LiCs and NaCs in the A1Σ+ state
- Authors: Mabrouk N.1,2, Berriche H.2,3
-
Affiliations:
- Northern Border University, College of Science
- Laboratoire des Interfaces et Matériaux Avancés, Département de Physique
- Mathematics and Natural Sciences Department, School of Arts and Sciences
- Issue: Vol 91, No 8 (2017)
- Pages: 1474-1485
- Section: Structure of Matter and Quantum Chemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169662
- DOI: https://doi.org/10.1134/S0036024417080192
- ID: 169662
Cite item
Abstract
Calculations of the adiabatic potential energy curves and the transition dipole moments between the ground (A1Σ+) and the first excited (A1Σ+) states have been determined for the LiCs and NaCs molecules. The calculations are performed using an ab initio approach based on non-empirical pseudopotentials for Cs+, Li+ and Na+ cores, parameterized l-dependent polarization potentials and full configuration interaction calculations. The potential energy curves and the transition dipole moment are used to estimate the radiative lifetimes of the vibrational levels of the A+Σ+ state using the Franck–Condon (FC) approximation and the approximate sum rule method. The radiative lifetimes associated with the A+Σ+ state are presented here for the first time. These data can help experimentalists to optimize photoassociative formation of ultracold molecules and their longevity in a trap or in an optical lattice.
About the authors
N. Mabrouk
Northern Border University, College of Science; Laboratoire des Interfaces et Matériaux Avancés, Département de Physique
Email: hamidberriche@yahoo.fr
Saudi Arabia, Arar; Avenue de l’Environnement, Monastir, 5019
H. Berriche
Laboratoire des Interfaces et Matériaux Avancés, Département de Physique; Mathematics and Natural Sciences Department, School of Arts and Sciences
Author for correspondence.
Email: hamidberriche@yahoo.fr
Tunisia, Avenue de l’Environnement, Monastir, 5019; Ras Al Khaimah