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 Nozaki; Yen Wei Chen

doi:10.1063/1.1705654

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

ENG - Aerospace Engineering

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	2814-2822
Number of pages	9
Journal	Physics of Plasmas
Volume	11
Issue number	5 PART 2
DOIs	https://doi.org/10.1063/1.1705654
Publication status	Published - 2004 May 1

ASJC Scopus subject areas

Condensed Matter Physics

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Fujioka, S., Sunahara, A., Ohnishi, N., Tamari, Y., Nishihara, K., Azechi, H., Shiraga, H., Nakai, M., Shigemori, K., Sakaiya, T., Tanaka, M., Otani, K., Okuno, K., Watari, T., Yamada, T., Murakami, M., Nagai, K., Norimatsu, T., Izawa, Y., ... Chen, Y. W. (2004). Suppression of Rayleigh-Taylor instability due to radiative ablation in brominated plastic targets. Physics of Plasmas, 11(5 PART 2), 2814-2822. https://doi.org/10.1063/1.1705654

Suppression of Rayleigh-Taylor instability due to radiative ablation in brominated plastic targets. / Fujioka, Shinsuke; Sunahara, Atsushi; Ohnishi, Naofumi; Tamari, Yohei; Nishihara, Katsunobu; Azechi, Hiroshi; Shiraga, Hiroyuki; Nakai, Mitsuo; Shigemori, Keisuke; Sakaiya, Tatsuhiro; Tanaka, Motohiro; Otani, Kazuto; Okuno, Kazuki; Watari, Takeshi; Yamada, Takeshi; Murakami, Masakatsu; Nagai, Keiji; Norimatsu, Takayoshi; Izawa, Yasukazu; Nozaki, Shinya; Chen, Yen Wei.

In: Physics of Plasmas, Vol. 11, No. 5 PART 2, 01.05.2004, p. 2814-2822.

Research output: Contribution to journal › Article

Fujioka, S, Sunahara, A, Ohnishi, N, Tamari, Y, Nishihara, K, Azechi, H, Shiraga, H, Nakai, M, Shigemori, K, Sakaiya, T, Tanaka, M, Otani, K, Okuno, K, Watari, T, Yamada, T, Murakami, M, Nagai, K, Norimatsu, T, Izawa, Y, Nozaki, S & Chen, YW 2004, 'Suppression of Rayleigh-Taylor instability due to radiative ablation in brominated plastic targets', Physics of Plasmas, vol. 11, no. 5 PART 2, pp. 2814-2822. https://doi.org/10.1063/1.1705654

Fujioka, Shinsuke ; Sunahara, Atsushi ; Ohnishi, Naofumi ; Tamari, Yohei ; Nishihara, Katsunobu ; Azechi, Hiroshi ; Shiraga, Hiroyuki ; Nakai, Mitsuo ; Shigemori, Keisuke ; Sakaiya, Tatsuhiro ; Tanaka, Motohiro ; Otani, Kazuto ; Okuno, Kazuki ; Watari, Takeshi ; Yamada, Takeshi ; Murakami, Masakatsu ; Nagai, Keiji ; Norimatsu, Takayoshi ; Izawa, Yasukazu ; Nozaki, Shinya ; Chen, Yen Wei. / Suppression of Rayleigh-Taylor instability due to radiative ablation in brominated plastic targets. In: Physics of Plasmas. 2004 ; Vol. 11, No. 5 PART 2. pp. 2814-2822.

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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.",

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AU - Fujioka, Shinsuke

AU - Sunahara, Atsushi

AU - Ohnishi, Naofumi

AU - Tamari, Yohei

AU - Nishihara, Katsunobu

AU - Azechi, Hiroshi

AU - Shiraga, Hiroyuki

AU - Nakai, Mitsuo

AU - Shigemori, Keisuke

AU - Sakaiya, Tatsuhiro

AU - Tanaka, Motohiro

AU - Otani, Kazuto

AU - Okuno, Kazuki

AU - Watari, Takeshi

AU - Yamada, Takeshi

AU - Murakami, Masakatsu

AU - Nagai, Keiji

AU - Norimatsu, Takayoshi

AU - Izawa, Yasukazu

AU - Nozaki, Shinya

AU - Chen, Yen Wei

PY - 2004/5/1

Y1 - 2004/5/1

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