Publication: Higher order expansion of Keldysh integral for hydrogen atom and H2+ molecular ion
All || By Area || By Year| Title | Higher order expansion of Keldysh integral for hydrogen atom and H2+ molecular ion | Authors/Editors* | Z. J. Long, W.-K. Liu |
|---|---|
| Where published* | Journal of Modern Optics |
| How published* | Journal |
| Year* | 2011 |
| Volume | 58 |
| Number | 13 |
| Pages | 1141-1148 |
| Publisher | Taylor & Francis |
| Keywords | strong eld ionization; asymptotic expansion; molecular ion; residue theorem; LCAO; saddle point; method of steepest descent |
| Link | http://dx.doi.org/10.1080/09500340.2011.582962 |
| Abstract |
In this paper we provide a systematic method of nding the higher order asymptotic expansion of the Keldysh integral using the hydrogen atom as an example. Comparisons with exact numerical integration shows that the second order correction improves the the rst order results signi cantly. We extend this method to molecular ionization in H2+ and calculate the total ionization rate. The results are in good agreement with the exact solution of the time dependent Schrodinger equation. |
Back to page 8 of list