Published in Physical Review A, Volume 64, Issue 4, September 18, 2001, pages 043413-1-043413-6.
NOTE: At the time of publication, the author Glen Gillen was not yet affiliated with Cal Poly.
The definitive version is available at https://doi.org/10.1103/PhysRevA.64.043413.
Using 120-fs, 800-nm Ti:sapphire laser pulses, ionic yields of singly and doubly charged magnesium ions were measured as a function of intensity and laser field ellipticity. A clear “nonsequential” enhancement of the doubly charged ion is observed for circularly polarized light in addition to linearly polarized light. Over the entire intensity range the double-ionization yield is considerably higher for linear polarization than it is for circular polarization.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society. The following article appeared in Physical Review A.