Multiple Ionization of Rare Gas Atoms Irradiated with Intense VUV Radiation

H. Wabnitz, A. R. B. de Castro, P. Gürtler, T. Laarmann, W. Laasch, J. Schulz, and T. Möller
Phys. Rev. Lett. 94, 023001 – Published 18 January 2005

Abstract

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 98 nm 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 10121013   W/cm2 the ionization is attributed to sequential multiphoton processes. The production of multiple charged ions saturates at 5–30 times lower power densities than at 193 and 564 nm wavelength, respectively.

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  • Received 29 January 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.023001

©2005 American Physical Society

Authors & Affiliations

H. Wabnitz1,*, A. R. B. de Castro2,3, P. Gürtler1, T. Laarmann1,*, W. Laasch1, J. Schulz1,‡, and T. Möller1,§

  • 1Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
  • 2LNLS, 13084-971 Campinas, São Paulo, Brazil
  • 3IFGW-UNICAMP, 13083-970 Campinas, São Paulo, Brazil

  • *Present address: CEA-SPAM, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette, France. Electronic address: wabnitz@drecam.cea.fr
  • Present address: Max Born Institute, Max-Born-Strasse 2a, 12489 Berlin, Germany.
  • Present address: MAX-lab, Box 118, 22100 Lund, Sweden.
  • §Present address: Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany.

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Issue

Vol. 94, Iss. 2 — 21 January 2005

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