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Title: Density and x-ray emission profile relationships in highly ionized high-Z laser-produced plasmas

We present a benchmark measurement of the electron density profile in the region where the electron density is 10{sup 19 }cm{sup –3} and where the bulk of extreme ultraviolet (EUV) emission occurs from isotropically expanding spherical high-Z gadolinium plasmas. It was found that, due to opacity effects, the observed EUV emission is mostly produced from an underdense region. We have analyzed time-resolved emission spectra with the aid of atomic structure calculations and find the multiple ion charge states around 18+ during the laser pulse irradiation.
Authors:
; ; ; ; ;  [1] ; ; ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ; ;  [11] more »;  [12] « less
  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)
  2. Department of Advanced Interdisciplinary Sciences and Center for Optical Research and Education (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan)
  3. National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292 (Japan)
  4. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan)
  5. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577 (Japan)
  6. Graduate School of Science and Engineering for Research, University of Toyama, Toyama, Toyama 930-8555 (Japan)
  7. Quantum Beam Science Center, Japan Atomic Energy Agency, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215 (Japan)
  8. Institute for Laser Technology, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)
  9. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 (China)
  10. (Ireland)
  11. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
  12. Gigaphoton, Inc., 3-25-1, Shinomiya, Hiratsuka 254-8555 (Japan)
Publication Date:
OSTI Identifier:
22398760
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BENCHMARKS; CHARGE STATES; ELECTRON DENSITY; EMISSION SPECTRA; EXTREME ULTRAVIOLET RADIATION; GADOLINIUM; LASER-PRODUCED PLASMA; MULTICHARGED IONS; OPACITY; PULSED IRRADIATION; SPHERICAL CONFIGURATION; TIME RESOLUTION; X RADIATION