Abstract
Electron energy distributions of singly and doubly ionized helium in an intense 390 nm laser field have been measured at two intensities (0.8 PW/cm(2) and 1.1 PW/cm(2), where PW equivalent to 10(15) W/cm(2)). Numerical solutions of the full-dimensional time-dependent helium Schrodinger equation show excellent agreement with the experimental measurements. The high-energy portion of the two-electron energy distributions reveals an unexpected 5U(p) cutoff for the double ionization (DI) process and leads to a proposed model for DI below the quasiclassical threshold.
| Original language | English |
|---|---|
| Article number | 133001 |
| Pages (from-to) | 133001-1-133001-4 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 96 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - Apr 2006 |
ASJC Scopus subject areas
- General Physics and Astronomy
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