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Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

1000 Times Enhancement of Fusion Reaction in Relation to Fast-Ion Heating Induced by a Direct-Irradiating Fast-Ignition Scheme

Oct 16, 2014, 2:00 PM
4h 45m
Green 8-9 (Hotel Park Inn Pribaltiyskaya)

Green 8-9

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation
Poster Poster 6

Speaker

Dr Yoshitaka Mori (The Graduate School for the Creation of New Photonics Industries)

Description

For inertial confinement fusion, the high-density compression and core heating are essential processes. National Ignition Facility (NIF) is a promising candidate for the development of a fusion power plant. However, a self-ignition scheme, that is, to burn the core in implosion itself is not straightforward as expected. A potential solution for this is the fast-ignition scheme, because this scheme can separate and optimize the process of fuel compression and its heating respectively. In this paper, we proposed and performed a new-scheme fast-ignition which includes direct ion heating of an imploded core. The Laser for Fast Ignition Experiment (LFEX) directly heated a pre-imploded core, enhancing D(d, n)^3He-reaction neutron (DD neutron) yields by a factor of 1000 (5×10^8 n/4pi sr) from that of pre- imploded core. This is the best ever obtained in fast-ignition scheme. Temperature of a part of the core increased by a factor of two, i.e., from 0.8 keV to 1.8 keV. The laser-driven hot electrons and fast ions contribute to the core heating. The thermal fusion neutron yield of 6.4×10^7 n/4pi sr also breaks the previous record of 2×10^7 n/4pi sr. STAR ID hydro-code predicts that deuterons are related to beam fusion and carbons to thermal fusion, respectively. The proposed scheme here is a potential path to fast-ignite the core at high gain fusion. We would like to stress two points, (1) Not only hot electrons, but also energetic ions can fast ignite the core. (2) The neutron yield has increased as high as 1,000 times than that achieved before, which is a record of the fast ignition scheme.
Country or International Organisation Japan
Paper Number IFE/P6-9

Primary author

Dr Yoshitaka Mori (The Graduate School for the Creation of New Photonics Industries)

Co-authors

Prof. Akira Noda (Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University) Dr Atsushi Sunahara (Institute for Laser Technology) Dr Eisuke Miura (National Institute of Advanced Industrial Science and Technology) Dr Hirofumi Kan (Hamamatsu Photonics, K. K.) Dr Hirozumi Azuma (TOYOTA Central Research and Development Laboratories, Inc.) Prof. Katsuhiro Ishii (The Graduate School for the Creation of New Photonics Industries) Prof. Kazuhisa Fujita (The Graduate School for the Creation of New Photonics Industires) Mr Manabu Fujine (Advanced Material Engineering Div., TOYOTA Motor Corporation,) Dr Masaru Takagi (Hamamatsu Photonics, K. K.) Mr Mitsutaka Kakeno (TOYOTA Central Research and Development Laboratories, Inc.,) Mr Nakahiro Satoh (Hamamatsu Photonics, K. K.) Dr Naoki Nakamura (Advanced Material Engineering Div. TOYOTA Motor Corporation) Dr Osamu Komeda (Advanced Material Engineering Div. TOYOTA Motor Corporation) Prof. Ryohei Hanayama (The Graduate School fort the Creation of New Photonics Industries) Prof. Shinichiro Okihara (The Graduate School for the Creation of New Photonics Industires) Mr Takahiro Nagai (Institute of Laser Engineering, Osaka University) Dr Takashi Kurita (Hamamatsu Photonics, K. K.) Mrs Takashi Sekine (Hamamatsu Photonics, K. K.) Dr Takeshi Watari (Hamamatsu Photonics, K. K.) Mr Takuya Kondo (Advanced Material Engineering Div., TOYOTA Motor Corporation,) Dr Tatsumi Hioki (TOYOTA Central Research and Development Laboratories, Inc.,) Prof. Tetsuo Ozaki (National Institute for Fusion Science,) Prof. Tomoyoshi Motohiro (TOYOTA Central Research and Development Laboratories, Inc.,) Dr Toshiyuki Kawashima (Hamamatsu Photonics, K. K.) Mr Yasuhiko Nishimura (The Graduate School for the Creation of New Photonics Industries, Toyota Technical Development Corp.) Prof. Yasuhiko Sentoku (University of Nevada, Reno) Prof. Yasunobu Arikawa (Institute of Laser Engineering, Osaka University) Prof. Yoneyoshi Kitagawa (The Graduate School for the Creation of New Photonics Industries) Mr Yuki Abe (Institute of Laser Engineering, Osaka University)

Presentation materials