高速点火レーザー核融合におけるドライバ粒子の伝播制御

2015 Fiscal Year Annual Research Report

• Project/Area Number: 25400539
• Research Institution: National Institute for Fusion Science
• Principal Investigator: 坂上 仁志 核融合科学研究所, ヘリカル研究部, 教授 (30254452)
• Co-Investigator(Kenkyū-buntansha): 城崎 知至 広島大学, 工学(系)研究科(研究院), 准教授 (10397680)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: レーザー核融合 / 高速点火 / 統合シミュレーション / 短波長化 / 高速電子 / イオン加速 / 外部磁場

Outline of Annual Research Achievements

コーン付きターゲットを用いた高速点火レーザー核融合で重要な役割を果たす高速電子は，大きな発散角と高いスロープ温度を持つため，コア加熱効率の著しい低下が懸念されている．そこで，高エネルギーイオンを用いて補助加熱を行う手法について統合シミュレーションを行った．コーンチップをイオン源となる低密度CHフォームでコーティングし，ポンドラモーティブ力による直接イオン加速を用いた場合，フォーム中央部のイオンは加速されるが，コーン壁に沿う電子密度増加による静電場およびCHフォームの凹面変形により，イオンビームの発散角は大きくなることがわかった．これを抑制するため，コーン形状のテーパーをなくし，凹面変形補償のためCHフォームを凸面にした結果，加熱のイオン寄与は67%改善されたが，電子寄与は半減した．このため，ターゲット構造の最適設計が必要である．
一方，高速電子を外部磁場によってコアまでガイディングする手法では，平成28年度のFIREX実験に導入される中実ターゲットについて，爆縮による外部磁場の圧縮をシミュレーションし，その磁場を用いてコア加熱をシミュレーションした結果，初期に1.5 kTの外部磁場を印加した場合，加熱効率は1.6倍程度向上することが示された．
また，高速電子のスロープ温度を下げる手法として，加熱用レーザーの短波長化（2ω，3ω化）が考えられている．そこで，短波長レーザーにより生成される高速電子の特性を評価し，簡易的にコア加熱効率を見積もったところ， 2ω化の場合には1.7倍，3ω化の場合には2.1倍程度の向上を期待できることがわかった．
一方，強磁場中での相対論的電子ビームの高密度プラズマ中の輸送では，非線形ホイッスラー波として双極子磁場が成長しながら伝播し，双極子磁場の誘導電場により電子ビームが減速する結果，ビームエネルギーが磁場エネルギーに変換されることがわかった．

Research Products

• [Journal Article] The formation mechanism of the periodic nanograting structure by the Weibel instability (2016)
  • Author(s): A. M. Gouda, H. Sakagami, T. Ogata, M. Hashida, and S. Sakabe
  • Journal Title: Appl. Phys. A Volume: 122 Pages: 454
  • DOI: 10.1007/s00339-016-9958-1
  • Peer Reviewed
• [Journal Article] Orientation of periodic grating structures controlled by double-pulse irradiation (2016)
  • Author(s): M. Hashida, T. Nishii, Y. Miyasaka, H. Sakagami, M. Shimizu, S. Inoue, and S. Sakabe
  • Journal Title: Appl. Phys. A Volume: 122 Pages: 484
  • DOI: 10.1007/s00339-016-0011-1
  • Peer Reviewed
• [Journal Article] Kinetic simulation of electron transport using electron magnethydrodynamic structures (2016)
  • Author(s): M. Hata, H. Sakagami, and A. Das
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012027
  • DOI: 10.1088/1742-6596/688/1/012027
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Cool-down performance of the new apparatus for fuel layering demonstrations of FIREX targets (2016)
  • Author(s): A. Iwamoto, T. Norimatsu, M. Nakai, H. Sakagami, H. Shiraga, and H. Azechi
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012037
  • DOI: 10.1088/1742-6596/688/1/012037
  • Peer Reviewed
• [Journal Article] Electron beam guiding by strong longitudinal magnetic fields (2016)
  • Author(s): T. Johzaki, K. Mima, S. Fujioka, H. Sakagami, A. Sunahara, H. Nagatomo, and H. Shiraga
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012041
  • DOI: 10.1088/1742-6596/688/1/012041
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetized Fast ignition (MFI) and Laser Plasma Interactions in Strong Magnetic Field (2016)
  • Author(s): K. Mima, T. Johzaki, J. Honrubia, H. Nagatomo, T. Taguchi, A. Sunahara, H. Sakagami, S. Fujioka, and G. Logan
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012066
  • DOI: 10.1088/1742-6596/688/1/012066
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hot electron spectra on advanced targets in FIREX (2016)
  • Author(s): T. Ozaki, A. Sunahara, H. Shiraga, Y. Arikawa, S. Fujioka, H. Sakagami, Z. Zhang, H. Nagatomo, T. Johzaki, T. Namimoto, M. Taga, S. Kojima, Y. Abe, K. Ishihara , T. Nagai , S. Sakata , S. Hattori, Y. Sakawa, H. Nishimura, H. Azechi, and FIREX group
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012083
  • DOI: 10.1088/1742-6596/688/1/012083
  • Peer Reviewed
• [Journal Article] Integrated simulations for ion beam assisted fast ignition (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012096
  • DOI: 10.1088/1742-6596/688/1/012096
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effects of the irradiation of a finite number of laser beams on the implosion of a cone-guided target (2016)
  • Author(s): T. Yanagawa, H. Sakagami, H. Nagatomo, and A. Sunahara
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012127
  • DOI: 10.1088/1742-6596/688/1/012127
  • Peer Reviewed
• [Journal Article] Formation mechanism of a periodic nano- grating structure by the surface plasma wave (2016)
  • Author(s): A. M. Gouda, H. Sakagami, T. Ogata, M. Hashida, and S. Sakabe
  • Journal Title: Plasma and Fusion Research Volume: 11 Pages: 1
  • Peer Reviewed
• [Journal Article] Simulation analysis for ion assisted fast ignition using structured targets (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Journal Title: J. Phys.: Conf. Series Volume: 710 Pages: 1
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] レーザー誘起ナノ周期構造形成 (2015)
  • Author(s): 橋田昌樹，Laura Gemini，宮坂泰弘，坂上仁志，井上峻介，阪部周二
  • Journal Title: O plus E Volume: 37 Pages: 96-99
• [Journal Article] Control of an electron beam using strong magnetic field for efficient core heating in fast ignition (2015)
  • Author(s): T. Johzaki, T. Taguchi, Y. Sentoku, A. Sunahara, H. Nagatomo, H. Sakagami, K. Mima, S. Fujioka, and H. Shiraga
  • Journal Title: Nucl. Fusion Volume: 55 Pages: 053022
  • DOI: 10.1088/0029-5515/55/5/053022
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Computational study of magnetic field compression by laser-driven implosion (2015)
  • Author(s): H. Nagatomo, T. Johzaki, T. Asahina, A. Sunahara, T. Sano, H. Sakagami, K. Mima, S. Fujioka, H. Shiraga, and H. Azechi
  • Journal Title: Nucl. Fusion Volume: 55 Pages: 093028
  • DOI: 10.1088/0029-5515/55/9/093028
  • Peer Reviewed
• [Journal Article] Direct Heating of a Laser-Imploded Core by Ultra-Intense Laser-Driven Ions (2015)
  • Author(s): Y. Kitagawa, Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, T. Sekine, N. Satoh, T. Kurita, M. Takagi, T. Watari, T. Kawashima, H. Kan, Y. Nishimura, A. Sunahara, et al.
  • Journal Title: Phys. Rev. Lett. Volume: 114 Pages: 195002
  • DOI: 10.1103/PhysRevLett.114.195002
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Heating efficiency evaluation with mimicking plasma conditions of integrated fast-ignition experiment (2015)
  • Author(s): S. Fujioka, T. Johzaki, Y. Arikawa, Z. Zhang, A. Morace, T. Ikenouchi, T. Ozaki, T. Nagai, Y. Abe, S. Kojima, S. Sakata, H. Inoue, M. Utsugi, S. Hattori, T. Hosoda, S. H. Lee, K. Shigemori, Y. Hironaka, A. Sunahara, H. Sakagami, K. Mima, et al.
  • Journal Title: Phys. Review E Volume: 91 Pages: 063102
  • DOI: 10.1103/PhysRevE.91.063102
  • Peer Reviewed
• [Journal Article] Slowdown mechanisms of ultraintense laser propagation in critical density plasma (2015)
  • Author(s): T. Iwawaki, H. Habara, T. Yabuuchi, M. Hata, H. Sakagami, and K. A. Tanaka
  • Journal Title: Phys. Review E Volume: 92 Pages: 013106
  • DOI: 10.1103/PhysRevE.92.013106
  • Peer Reviewed
• [Journal Article] Asymmetric Implosion of a Cone-Guided Target Irradiated by Gekko XII Laser (2015)
  • Author(s): T. Yanagawa, H. Sakagami, A. Sunahara, and H. Nagatomo
  • Journal Title: Laser and Particle Beams Volume: 33 Pages: 367-378
  • DOI: 10.1017/S0263034615000427
  • Peer Reviewed
• [Journal Article] Quantitative K alpha line spectroscopy for energy transport in fast ignition plasma driven with LFEX PW laser (2015)
  • Author(s): Z. Zhang, H. Nishimura, S. Fujioka, Y. Arikawa, T. Ikenouchi, M. Nakai, H. Nagatomo, H. Chen, J. Park, G. J. Williams, T. Ozaki, H. Shiraga, S. Kojima, H. Hosoda, N. Miyanaga, J. Kawanaka, Y. Nakata, T. Jitsuno, and H. Azechi
  • Journal Title: High Energy Density Phys. Volume: 15 Pages: 78-81
  • DOI: 10.1016/j.hedp.2015.04.001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Density and x-ray emission profile relationships in highly ionized high-Z laser-produced plasmas (2015)
  • Author(s): K. Yoshida, S. Fujioka, T. Higashiguchi, T. Ugomori, N. Tanaka, M. Kawasaki, Y Suzuki, C. Suzuki, K. Tomita, R. Hirose, T. Ejima, H. Ohashi, M. Nishikino, A. Sunahara, B. Li, P. Dunne, G. O’sullivan, T. Yanagida, H. Azechi, and H. Nishimura
  • Journal Title: Appl. Phys. Lett. Volume: 106 Pages: 121109
  • DOI: 10.1063/1.4916395
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Correlation between Laser Absorption and Radiation Conversion Efficiency in Laser Produced Tin Plasma (2015)
  • Author(s): H. Matsukuma, A. Sunahara, T. Yanagida, H. Tomuro, K. Kouge, T. Kodama, T. Hosoda, S. Fujioka, and H. Nishimura
  • Journal Title: Appl. Phys. Lett. Volume: 107 Pages: 121103
  • DOI: 10.1063/1.4931698
  • Peer Reviewed
• [Journal Article] Characterization of material ablation driven by laser generated intense extreme ultraviolet (EUV) light (2015)
  • Author(s): N. Tanaka, M. Masuda, R. Deguchi, M. Murakami, A. Suahara, S. Fujioka, A. Yogo, and H. Nishimura
  • Journal Title: Appl. Phys. Lett. Volume: 107 Pages: 114101
  • DOI: 10.1063/1.4930958
  • Peer Reviewed
• [Journal Article] Spectroscopic observation of ablation plasma generated with a laser-driven extreme light source (2015)
  • Author(s): M. Masuda, N. Tanaka, K. Hane, A. Sunahara, S. Fujioka, and H. Nishimura
  • Journal Title: Appl. Phys. B Volume: 119 Pages: 421-425
  • DOI: 10.1007/s00340-015-6041-0
  • Peer Reviewed
• [Journal Article] Numerical evaluation of a 13.5nm high-brightness microplasma extreme ultraviolet source (2015)
  • Author(s): H. Hara, G. Arai, T. H. Dinh, W. Jang, T. Miura, A. Endo, T. Ejima, B. Li, P. Dunne, G. O’Sullivan, A. Sunahara, and T. Higashiguchi
  • Journal Title: J. Appl. Phys. Volume: 118 Pages: 193301
  • DOI: 10.1063/1.4935817
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multilayered polycrystallization in singe-crystal YSZ by laser-shock compression (2015)
  • Author(s): Y. Nishimura, Y. Kitagawa, Y. Mori, T. Hioki, H. Azuma, T. Motohiro, T. Komeda, K. Ishii, R. Hanayama, T. Sekine, A. Sunahara, T. Kajino, T. Nishi, T. Kondo, M. Fujine, N. Sato, T. Kurita, T. Kawashima, T. Kan, E. Miura, and Y. Sentoku
  • Journal Title: J. Phys. D: Appl. Phys. Volume: 48 Pages: 325305
  • DOI: 10.1088/0022-3727/48/32/325305
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Simulation of the Ablation by Charged Particles for Laser Fusion Reactor Wall (2015)
  • Author(s): K. Takaki, K. Kageyama, A. Sunahara, T. Yabuuchi, and K. A. Tanaka
  • Journal Title: J. Nucl. Materials Volume: 459 Pages: 77-80
  • DOI: 10.1016/j.jnucmat.2015.01.005
  • Peer Reviewed
• [Journal Article] Performance of Three-dimensional Fluid Simulation with XcalableMP on the K computer (2015)
  • Author(s): H. Sakagami and H. Murai
  • Journal Title: Proc. of the 30th International Supercomputing Conference, Frankfurt, Germany, July 12-16, (2015) Volume: 1 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 短波長レーザーにより生成された高速電子の特性 III (2016)
  • Author(s): 佐藤竜馬，坂上仁志，砂原淳，城崎知至，長友英夫
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] LFEXレーザーの複数ビーム照射により生成される高速電子の特性とその制御 (2016)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，砂原淳，長友英夫
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 高速点火レーザー核融合におけるイオン補助加熱によるコア加熱の特性評価 (2016)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 燃料球内面照射型高速点火の数値シミュレーション (2016)
  • Author(s): 砂原淳，安部勇輝，李昇浩，尾崎哲，城崎知至，長友英夫，有川安信，藤岡慎介，坂上仁志，中井光男，白神宏之，乗松孝好，疇地宏
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 強磁場によるアブレーション圧分布の非一様性を考慮した中実球の高密度圧縮 (2016)
  • Author(s): 長友英夫，城崎知至，松尾一輝，朝比奈隆志，畑昌育，砂原淳，坂上仁志，李昇浩，藤岡慎介
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] 金属フォームターゲットを用いた超高強度レーザーによるイオン加速 (2016)
  • Author(s): 久保田善大，羽原英明，G. R. Kumar，長井圭治，坂上仁志，田中和夫
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19 – 2016-03-22
• [Presentation] Ion Assisted Fast Ignition by Ponderomotive Force Ion Acceleration with Structured Targets (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara and H. Nagatomo
  • Organizer: ASHULA Grand Seminar/Symposium 2016
  • Place of Presentation: Osaka, Japan
  • Year and Date: 2016-01-05 – 2016-01-07
  • Int'l Joint Research / Invited
• [Presentation] 内面照射型高速点火核融合の点火計算 (2015)
  • Author(s): 砂原淳，城崎知至，安部勇輝，坂上仁志，尾崎晢，長友英夫，李昇浩，有川安信，藤岡慎介，中井光男，白神宏之，乗松孝好，疇地宏
  • Organizer: プラズマ・核融合学会第32回年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24 – 2015-11-27
• [Presentation] LFEXペタワットレーザーの複数ビーム照射により生成される高速電子の特性 (2015)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，長友秀夫
  • Organizer: プラズマ・核融合学会第32回年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24 – 2015-11-27
• [Presentation] 外部強磁場下におけるレーザーアブレーション駆動加速への磁気圧の影響 (2015)
  • Author(s): 長友英夫，Nicolai Philippe，Breil Jerome，Feugeas Jean-Luc，松尾一輝，朝比奈隆志，佐野孝好，砂原淳，城崎知至，藤岡慎介，三間圀興
  • Organizer: プラズマ・核融合学会第32回年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24 – 2015-11-27
• [Presentation] 高速点火レーザー核融合のコア加熱過程に対する外部磁場効果 (2015)
  • Author(s): 城﨑知至, 長友英夫, 砂原淳, 千德靖彦, 藤岡慎介, 遠藤琢磨
  • Organizer: プラズマ・核融合学会第32回年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24 – 2015-11-27
• [Presentation] Laser ablation and target acceleration under the strong magnetic field (2015)
  • Author(s): H. Nagatomo, K. Matsuo, T. Asahina, T. Johzaki, P. Nicolai, J. Breil, A. Sunahara, A. Morace, K. Shigemori, T. Sano, Z. Zhang, S. Fujioka, H. Sakagami, and K. Mima
  • Organizer: 57th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Savannah, GA
  • Year and Date: 2015-11-16 – 2015-11-20
  • Int'l Joint Research
• [Presentation] Magnetic Guiding of Electron Beam in Imploded Spherical Solid Targets (2015)
  • Author(s): T. Johzaki,Y. Sentoku, H. Nagatomo, A. Sunahara, H. Sakagami, S. Fujioka,H. Shiraga,T. Endo, and FIREX project group
  • Organizer: 57th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Savannah, GA
  • Year and Date: 2015-11-16 – 2015-11-20
  • Int'l Joint Research
• [Presentation] Hydrodynamic simulation of Irradiation of ultra-intense laser on the inner surface of shell (2015)
  • Author(s): A. Sunahara, T. Johzaki, Y. Abe, H. Sakagami, S. Lee, Y. Arikawa, S. Fujioka, H. Nagatomo, H. Shiraga, H. Azechi, and FIREX project team
  • Organizer: 57th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Savannah, GA
  • Year and Date: 2015-11-16 – 2015-11-20
  • Int'l Joint Research
• [Presentation] Formation Mechanism of Periodic Nano-Grating Structures by Surface Plasma Waves (2015)
  • Author(s): A. M. Gouda, H. Sakagami, M. Hashida, and S. Sakabe
  • Organizer: 25th International Toki Conference
  • Place of Presentation: Toki, Japan
  • Year and Date: 2015-11-03 – 2015-11-06
  • Int'l Joint Research
• [Presentation] Performance Comparison between two programming models of XcalableMP (2015)
  • Author(s): H. Sakagami, and XcalableMP specification Working Group
  • Organizer: International Workshop LENS2015 (Language, Network and System Software)
  • Place of Presentation: Akihabara, Japan
  • Year and Date: 2015-10-29 – 2015-10-30
  • Int'l Joint Research
• [Presentation] Study of Fast Electron Generation Using Multi Beam of LFEX Petawatt Laser (2015)
  • Author(s): M. Hata, H. Sakagami, T. Johzaki, Y. Sentoku, and H. Nagatomo
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-25
  • Int'l Joint Research
• [Presentation] Intense Laser Driven Collision-Less Shock in Magnetized Target, Ion Acceleration and Applications (2015)
  • Author(s): K. Mima, Q. Jia, H. B. Cai, T. Taguchi, H. Nagatomo, A. Yogo, and S. Fujioka
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-25
  • Int'l Joint Research
• [Presentation] Direct Heating of Compressed Core by Ultra-Intense Laser (2015)
  • Author(s): A. Sunahara, T. Johzaki, H. Sakagami, H. Nagatomo, K. Mima, Y. Abe, Y. Arikawa, S. Fujioka, H. Shiraga, H. Azechi, FIREX project group, Y. Mori, Y. Kitagawa, and Y. Sentoku
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-25
  • Int'l Joint Research
• [Presentation] An Optimum Design of Implosion with External Magnetic Field for Electron Beam Guiding in Fast Ignition (2015)
  • Author(s): H. Nagatomo, T. Johzaki, A. Sunahara, K. Matsuo, T. Asahina, A. Sunahara, T. Sano, K. Mima, H. Sakagami, P. Nicolai, J. Breil, J.-L. Feugeas, S. Fujioka, A. Morace, K. Shigemori, and Z. Zhang
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-25
  • Int'l Joint Research
• [Presentation] Simulation Analysis for Ion Assisted Fast Ignition Using Structured Targets (2015)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-25
  • Int'l Joint Research
• [Presentation] Electron Beam Guiding by External Magnetic Fields in Imploded Fuel Plasma (2015)
  • Author(s): T. Johzaki, Y. Sentoku, H. Nagatomo, A. Sunahara, H. Sakagami, S. Fujioka, H. Shiraga, and FIREX project group
  • Organizer: 9th Int. Conf. on Inertial Fusion Sciences and Applications
  • Place of Presentation: Seattle, WA
  • Year and Date: 2015-09-20 – 2015-09-24
  • Int'l Joint Research
• [Presentation] 燃料球内面照射型高速点火核融合の点火計算 (2015)
  • Author(s): 砂原淳，城崎知至，安部勇輝，坂上仁志，長友英夫，李昇浩，有川安信，藤岡慎介，中井光男，白神宏之，乗松孝好，疇地宏，FIREXプロジェクトチーム
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 構造ターゲットを用いたイオン補助加熱による高速点火レーザー核融合 (2015)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] フェムト秒レーザーにより自己形成する金属ナノ周期構造 ～形成閾値フルーエンスの材料種依存性～ (2015)
  • Author(s): 橋田昌樹，西井崇也，宮坂泰弘，坂上仁志，井上峻介，阪部周二
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] レーザープラズマにおける無衝突衝撃波の生成条件の解明 II (2015)
  • Author(s): 長谷川直毅，坂上仁志，坂和洋一
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 高速点火のための密度半径積と圧縮磁場配位の最適化 (2015)
  • Author(s): 長友英夫, 城崎知至, 松尾一輝, 朝比奈隆志, 藤岡慎介, 砂原淳, 坂上仁志, Zhang Zhe, Morace Allesio, 重森啓介, 佐野孝好, 三間圀興
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 爆縮で形成される磁場配位における電子ビームガイディング特性 (2015)
  • Author(s): 城崎知至，千徳靖彦，長友英夫，砂原淳，坂上仁志，藤岡慎介，白神宏之，遠藤琢磨，FIREXプロジェクトチーム
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] ペタワットレーザーの複数ビーム照射による高速電 子生成に関する研究 (2015)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，長友 英夫
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 短波長レーザーにより生成された高速電子の特性 II (2015)
  • Author(s): 佐藤竜馬，坂上仁志，砂原淳，城崎知至，長友英夫
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16 – 2015-09-19
• [Presentation] 二温度保存型放射流体計算によるレーザー生成EUVスズプラズマ シミュレーション (2015)
  • Author(s): 砂原淳，竹内靖，西原功修，佐々木明
  • Organizer: 応用物理学会第76回秋季学術講演会
  • Place of Presentation: 名古屋国際会議場
  • Year and Date: 2015-09-13 – 2015-09-16
• [Presentation] Formation Mechanism of Periodic Nano-Grating Structure by Weibel Instability (2015)
  • Author(s): A. M. Gouda, H. Sakagami, T. Ogata, M. Hashida, and S. Sakabe
  • Organizer: 13th Conference on Laser Ablation (COLA-2015)
  • Place of Presentation: Cairns, Australia
  • Year and Date: 2015-08-31 – 2015-09-04
  • Int'l Joint Research
• [Presentation] Orientation of periodic grating structures controlled by double pulse irradiations (2015)
  • Author(s): M. Hashida, T. Nishii, Y. Miyasaka, H. Sakagami, S. Inoue, and S. Sakabe
  • Organizer: 13th Conference on Laser Ablation (COLA-2015)
  • Place of Presentation: Cairns, Australia
  • Year and Date: 2015-08-31 – 2015-09-04
  • Int'l Joint Research
• [Presentation] Electron Beam Guiding by kT-class Magnetic Fields in Fast Ignition (2015)
  • Author(s): T. Johzaki
  • Organizer: US-Japan Workshop on High Energy Density Physics
  • Place of Presentation: San Diego, CA
  • Year and Date: 2015-08-31 – 2015-09-01
  • Int'l Joint Research
• [Presentation] Hydrodynamics under the strong magnetic field for fast ignition (2015)
  • Author(s): H. Nagatomo, T. Johzaki, A. Sunahara, H. Sakagami, A. Nishiguchi, and K. Mima
  • Organizer: US-Japan Workshop on High Energy Density Physics
  • Place of Presentation: San Diego, CA
  • Year and Date: 2015-08-31 – 2015-09-01
  • Int'l Joint Research
• [Presentation] 36.Performance of Three-dimensional Fluid Simulation with XcalableMP on the K computer (2015)
  • Author(s): H. Sakagami and H. Murai
  • Organizer: 30th International Supercomputing Conference
  • Place of Presentation: Frankfurt, Germany
  • Year and Date: 2015-07-12 – 2015-07-16
  • Int'l Joint Research
• [Presentation] Ultra intense laser driven collision-less shock and ion acceleration (2015)
  • Author(s): K. Mima, Q. Jia, H. B. Cai, T. Taguchi, H. Nagatomo, A. Yogo, and S. Fujioka
  • Organizer: 42nd EPS Conf. on Plasma Physics
  • Place of Presentation: Lisbon, Portugal
  • Year and Date: 2015-06-22 – 2015-06-26
  • Int'l Joint Research
• [Presentation] Simulation Analysis for Ion Assisted Fast Ignition Using Two Different Types of Targets (2015)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Organizer: 7th International Conference on The Frontiers of Plasma Physics and Technology
  • Place of Presentation: Kochi, India
  • Year and Date: 2015-04-13 – 2015-04-17
  • Int'l Joint Research / Invited