Heating efficiency evaluation with mimicking plasma conditions of integrated fast-ignition experiment

被引：25

作者：

Fujioka, Shinsuke ^{[1
]}

Johzaki, Tomoyuki ^{[2
]}

Arikawa, Yasunobu ^{[1
]}

Zhang, Zhe ^{[1
]}

Morace, Alessio ^{[1
]}

Ikenouchi, Takahito ^{[1
]}

Ozaki, Tetsuo ^{[3
]}

Nagai, Takahiro ^{[1
]}

Abe, Yuki ^{[1
]}

Kojima, Sadaoki ^{[1
]}

Sakata, Shohei ^{[1
]}

Inoue, Hiroaki ^{[1
]}

Utsugi, Masaru ^{[1
]}

Hattori, Shoji ^{[1
]}

Hosoda, Tatsuya ^{[1
]}

Lee, Seung Ho ^{[1
]}

Shigemori, Keisuke ^{[1
]}

Hironaka, Youichiro ^{[1
]}

Sunahara, Atsushi ^{[4
]}

Sakagami, Hitoshi ^{[3
]}

Mima, Kunioki ^{[5
]}

Fujimoto, Yasushi ^{[1
]}

Yamanoi, Kohei ^{[1
]}

Norimatsu, Takayoshi ^{[1
]}

Tokita, Shigeki ^{[1
]}

Nakata, Yoshiki ^{[1
]}

Kawanaka, Junji ^{[1
]}

Jitsuno, Takahisa ^{[1
]}

Miyanaga, Noriaki ^{[1
]}

Nakai, Mitsuo ^{[1
]}

Nishimura, Hiroaki ^{[1
]}

Shiraga, Hiroyuki ^{[1
]}

Nagatomo, Hideo ^{[1
]}

Azechi, Hiroshi ^{[1
]}

机构：

[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[2] Hiroshima Univ, Grad Sch Engn, Higashihiroshima, Hiroshima 7398527, Japan

[3] Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[4] Inst Laser Technol, Suita, Osaka 5650871, Japan

[5] Grad Sch Creat New Photon Ind, Nishi Ku, Hamamatsu, Shizuoka 1411201, Japan

来源：

PHYSICAL REVIEW E | 2015年 / 91卷 / 06期

关键词：

LASER; GAIN;

D O I：

10.1103/PhysRevE.91.063102

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A series of experiments were carried out to evaluate the energy-coupling efficiency from heating laser to a fuel core in the fast-ignition scheme of laser-driven inertial confinement fusion. Although the efficiency is determined by a wide variety of complex physics, from intense laser plasma interactions to the properties of high-energy density plasmas and the transport of relativistic electron beams (REB), here we simplify the physics by breaking down the efficiency into three measurable parameters: (i) energy conversion ratio from laser to REB, (ii) probability of collision between the REB and the fusion fuel core, and (iii) fraction of energy deposited in the fuel core from the REB. These three parameters were measured with the newly developed experimental platform designed for mimicking the plasma conditions of a realistic integrated fast-ignition experiment. The experimental results indicate that the high-energy tail of REB must be suppressed to heat the fuel core efficiently.

引用

页数：8

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