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Titolo:
Observation of implosion dynamics by line emissions from direct-drive fusion capsules
Autore:
Ochi, Y; Fujita, K; Nishimura, H; Honda, H; Niki, I; Tsubakimoto, K; Naruo, S; Sunahara, A; Shiraga, H; Miyanaga, N; Azechi, H; Takabe, H; Mima, K;
Indirizzi:
Osaka Univ, Inst Laser Engn, Suita, Osaka 565, Japan Osaka Univ Suita Osaka Japan 565 Inst Laser Engn, Suita, Osaka 565, Japan
Titolo Testata:
FUSION ENGINEERING AND DESIGN
, volume: 44, anno: 1999,
pagine: 175 - 180
SICI:
0920-3796(199902)44:<175:OOIDBL>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
LASER-PRODUCED PLASMAS; SPECTROSCOPIC MEASUREMENTS; DENSITY; MODEL;
Keywords:
line emissions; fusion capsules; drive uniformity; implosion behavior;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Ochi, Y Osaka Univ, Inst Laser Engn, 2-6 Yamada Oka, Suita, Osaka 565, Japan Osaka Univ 2-6 Yamada Oka Suita Osaka Japan 565 , Osaka 565, Japan
Citazione:
Y. Ochi et al., "Observation of implosion dynamics by line emissions from direct-drive fusion capsules", FUSION ENG, 44, 1999, pp. 175-180

Abstract

Line emissions from Ar-doped fusion capsules were observed to investigate influence of drive uniformity on implosion behavior. To manipulate the drive non-uniformity, in particular of the mode number 6, the laser focus position was set in two representative cases. A fusion capsule was directly irradiated with 12 beams of partially-coherent green light. Imploded core plasmas were diagnosed by observing spatial distribution and time history of theAr line emissions. Clear differences were obtained between the two irradiation cases despite the calculated irradiation uniformities for the two cases being identical. The experimental result was compared with two-dimensional fluid simulations post-processed with an X-ray spectrum analysis code. Drive uniformity and associated perturbation growth at the pusher-fuel boundary are discussed as a plausible reason for the observed differences. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 11:30:48