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

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4894384· OSTI ID:22314464

Higashiguchi, Takeshi; Yamaguchi, Mami; Otsuka, Takamitsu; Nagata, Takeshi ^[1]; Ohashi, Hayato ^[2]; Li, Bowen ^[3]; D’Arcy, Rebekah; Dunne, Padraig; O’Sullivan, Gerry ^[4]

---

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. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)

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.

• OSTI ID: 22314464
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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