Exact numerical calculations of dissociative-ionization of molecular ions in intense laser fields: Non-Born–Oppenheimer dynamics
✍ Scribed by S. Chelkowski; C. Foisy; A. D. Bandrauk
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 231 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
The time-dependent Schrodinger equation for the 1-D H q molecule ¨2 Ž . with both nuclear and electronic degrees of freedom included was solved numerically. A wave᎐function splitting technique was used, which allows one to circumvent the problem of lost information due to commonly used absorbing boundaries of the electron Ž . flux. This technique allows us to calculate the above-threshold ionization ATI photoelectron kinetic energy spectra in the presence of moving nuclei, as well as complete spectra of dissociating protons, beyond the Born᎐Oppenheimer approximation. A considerable enhancement of the ATI spectra, with respect to the spectra generated by a H atom, were found. The peaks seen in calculated Coulomb explosion spectra of protons agree well with the predictions of recent theoretical work related to the Ž . phenomenon of charge-resonance-enhanced ionization CREI .