Abstract
A semiclassical treatment of collision-induced three-photon ionization of atoms with a near two-photon resonance is presented. The system is described by an effective two-level system. The wavelength dependence of the ionization yield does not obey a power law. When the first excited state is far from resonance, and with a C6R6 interatomic potential, a first-order correction to the expected -32 power law obeys a-power law. This three-photon process promises to be an extremely sensitive method for the study of collisional effects in the far wing of two-photon S-S and S-D transitions, and without the requirement of high densities.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1927-1933 |
| Number of pages | 7 |
| Journal | Physical Review A |
| Volume | 20 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1979 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics