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Type: Artigo de periódico
Title: Multiple ionization of rare gas atoms irradiated with intense VUV radiation
Author: Wabnitz, H
de Castro, ARB
Gurtler, P
Laarmann, T
Laasch, W
Schulz, J
Moller, T
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 similar to10(13) W/cm(2) 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 similar to10(12)-10(13) W/cm(2) 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.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.94.023001
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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