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Emission of thermally activated electrons from rare gas clusters irradiated with intense VUV light pulses from a free electron laser

Laarmann, T; Rusek, M; Wabnitz, H; Schulz, Joachim LU ; de Castro, ARB; Gurtler, P; Laasch, W and Moller, T (2005) In Physical Review Letters 95(6).
Abstract
The ionization dynamics of Ar and Xe clusters irradiated with intense vacuum ultraviolet light from a free-electron laser is investigated using photoelectron spectroscopy. Clusters comprising between 70 and 900 atoms were irradiated with femtosecond pulses at 95 nm wavelength (similar to 13 eV photon energy) and a peak intensity of similar to 4x10(12) W/cm(2). A broad thermal distribution of emitted electrons from clusters with a maximum kinetic energy up to 30-40 eV is observed. The observation of relatively low-energy photoelectrons is in good agreement with calculations using a time-dependent Thomas-Fermi model and gives experimental evidence of an outer ionization process of the clusters, due to delayed thermoelectronic emission.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
95
issue
6
publisher
American Physical Society
external identifiers
  • wos:000231017700026
  • scopus:27144537720
ISSN
1079-7114
DOI
10.1103/PhysRevLett.95.063402
language
English
LU publication?
yes
id
a8637f16-eeb8-4cd2-9e89-fbd18fafd86c (old id 229507)
date added to LUP
2007-08-10 14:34:31
date last changed
2017-11-19 03:25:43
@article{a8637f16-eeb8-4cd2-9e89-fbd18fafd86c,
  abstract     = {The ionization dynamics of Ar and Xe clusters irradiated with intense vacuum ultraviolet light from a free-electron laser is investigated using photoelectron spectroscopy. Clusters comprising between 70 and 900 atoms were irradiated with femtosecond pulses at 95 nm wavelength (similar to 13 eV photon energy) and a peak intensity of similar to 4x10(12) W/cm(2). A broad thermal distribution of emitted electrons from clusters with a maximum kinetic energy up to 30-40 eV is observed. The observation of relatively low-energy photoelectrons is in good agreement with calculations using a time-dependent Thomas-Fermi model and gives experimental evidence of an outer ionization process of the clusters, due to delayed thermoelectronic emission.},
  author       = {Laarmann, T and Rusek, M and Wabnitz, H and Schulz, Joachim and de Castro, ARB and Gurtler, P and Laasch, W and Moller, T},
  issn         = {1079-7114},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Emission of thermally activated electrons from rare gas clusters irradiated with intense VUV light pulses from a free electron laser},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.95.063402},
  volume       = {95},
  year         = {2005},
}