Multiple Ionization of Rare Gas Atoms Irradiated with Intense VUV Radiation

Details Multiple Ionization of Rare Gas Atoms Irradiated with Intense VUV Radiation Multiple Ionization of Rare Gas Atoms Irradiated with Intense VUV Radiation

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phrvl..94b3001w&link_type=abstract

Physical Review Letters, vol. 94, Issue 2, id. 023001

Physics

Optics

63

Multiphoton Ionization And Excitation To Highly Excited States, Nonlinear Optics

Scientific paper

The interaction of intense vacuum-ultraviolet radiation from a free-electron laser with rare gas atoms is investigated. The ionization products of xenon and argon atomic beams are analyzed with time-of-flight mass spectroscopy. At 98nm wavelength and ˜1013 W/cm2 multiple charged ions up to Xe6+ (Ar4+) are detected. From the intensity dependence of multiple charged ion yields the mechanisms of multiphoton processes were derived. In the range of ˜1012 1013 W/cm2 the ionization is attributed to sequential multiphoton processes. The production of multiple charged ions saturates at 5 30times lower power densities than at 193 and 564nm wavelength, respectively.

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