Suppression of Rayleigh-Taylor instability due to radiative ablation in brominated plastic targets

Shinsuke Fujioka, Atsushi Sunahara, Naofumi Ohnishi, Yohei Tamari, Katsunobu Nishihara, Hiroshi Azechi, Hiroyuki Shiraga, Mitsuo Nakai, Keisuke Shigemori, Tatsuhiro Sakaiya, Motohiro Tanaka, Kazuto Otani, Kazuki Okuno, Takeshi Watari, Takeshi Yamada, Masakatsu Murakami, Keiji Nagai, Takayoshi Norimatsu, Yasukazu Izawa, Shinya NozakiYen Wei Chen

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A scheme using high-Z doping of the ablator to suppress the Rayleigh-Taylor (RT) instability in direct-drive inertial fusion energy (IFE), that results in radiative ablation driven by self-emitted radiation was described. The RT instability was stabilized by the large ablation velocity and the long density scale length due to the radiation drive. The RT suppression mechanism was confirmed by the comparison between theoretical predictions and two-dimensional (2D) simulation. The results show that the high-Z doping ablator is applicable to high density cryogenic DD and DT implosions, as the hydrogen isotopes are transparent to x rays, which transmit through the ablator from the laser-irradiation side.

Original languageEnglish
Pages (from-to)2814-2822
Number of pages9
JournalPhysics of Plasmas
Volume11
Issue number5 PART 2
DOIs
Publication statusPublished - 2004 May 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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