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

Journal Article · Mon Mar 23 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4916395· OSTI ID:22398760

Yoshida, Kensuke; Fujioka, Shinsuke; Ugomori, Teruyuki; Tanaka, Nozomi; Azechi, Hiroshi; Nishimura, Hiroaki ^[1]; Higashiguchi, Takeshi; Kawasaki, Masato; Suzuki, Yuhei ^[2]; Suzuki, Chihiro ^[3]; Tomita, Kentaro ^[4]; Hirose, Ryoichi; Ejima, Takeo ^[5]; Ohashi, Hayato ^[6]; Nishikino, Masaharu ^[7]; Sunahara, Atsushi ^[8]; Li, Bowen ^[9]; Dunne, Padraig; O'Sullivan, Gerry ^[10]; Yanagida, Tatsuya ^[11]

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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. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
11. Gigaphoton, Inc., 3-25-1, Shinomiya, Hiratsuka 254-8555 (Japan)

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.

• OSTI ID: 22398760
• Journal Information: Applied Physics Letters, Vol. 106, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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