Low temperature scattering with the R-matrix method: the Morse potential
Abstract
Experiments are starting to probe collisions and chemical reactions between atoms and molecules at ultra-low temperatures. We have developed a new theoretical procedure for studying these collisions using the R-matrix method. Here this method is tested for the atom -- atom collisions described by a Morse potential. Analytic solutions for continuum states of the Morse potential are derived and compared with numerical results computed using an R-matrix method where the inner region wavefunctions are obtained using a standard nuclear motion algorithm. Results are given for eigenphases and scattering lengths. Excellent agreement is obtained in all cases. Progress in developing a general procedure for treating ultra-low energy reactive and non-reactive collisions is discussed.
Cite
@article{arxiv.1810.03475,
title = {Low temperature scattering with the R-matrix method: the Morse potential},
author = {Tom Rivlin and Laura K. McKemmish and Jonathan Tennyson},
journal= {arXiv preprint arXiv:1810.03475},
year = {2018}
}
Comments
18 pages, 6 figures, 3 tables, conference