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Title: Note: Enhancement of the extreme ultraviolet emission from a potassium plasma by dual laser irradiation

Emission spectra from multiply charged potassium ions ranging from K{sup 3+} to K{sup 5+} have been obtained in the extreme ultraviolet (EUV) spectral region. A strong emission feature peaking around 38 nm, corresponding to a photon energy of 32.6 eV, is the dominant spectral feature at time-averaged electron temperatures in the range of 8−12 eV. The variation of this emission with laser intensity and the effects of pre-pulses on the relative conversion efficiency (CE) have been explored experimentally and indicate that an enhancement of about 30% in EUV CE is readily attainable.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [4] ; ; ;  [5]
  1. Department of Advanced Interdisciplinary Sciences and Center for Optical Research (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 Japan (Japan)
  2. Graduate School of Science and Engineering for Research, University of Toyama, Toyama, Toyama 930-8555 (Japan)
  3. School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000 (China)
  4. (Ireland)
  5. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
Publication Date:
OSTI Identifier:
22314464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CONVERSION; EFFICIENCY; ELECTRON TEMPERATURE; EMISSION SPECTRA; EV RANGE; EXTREME ULTRAVIOLET RADIATION; LASER RADIATION; MULTICHARGED IONS; PHOTONS; PLASMA; POTASSIUM IONS