Fasr ignition scheme with strong converging shock wave

• Project/Area Number: 26630472
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear fusion studies
• Research Institution: Osaka University
• Principal Investigator: SHIGEMORI KEISUKE 大阪大学, レーザーエネルギー学研究センタ, 准教授 (50335395)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 衝撃波 / 慣性核融合 / 高速点火 / 光学計測 / 低密度フォーム / 収束衝撃波 / 高強度レーザー

Outline of Final Research Achievements

We have been developing an alternative scheme of fast ignition of inertial confinement targets with converging shock. Experiments were carried out on GEKKO-XII laser facility at ILE, Osaka University. We employed Au cone targets filled with low-density RF foam (2 mg/cm^3^). The foam-filled cone targets were irradiated by three beams of the GEKKO-XII, with pulse duration of 1.3 ns, intensity of ~ 10^14^ W/cm^2^ in 0.527 nm wavelength. Self-emission at the tip of cone was observed by one-dimensional streaked optical pyrometer (SOP) and two-dimensional images.

Research Products

• [Journal Article] Converging Shock Generation with Cone Target Filled with Low Density Foam (2016)
  • Author(s): K Shigemori, T Yamamoto, Y Hironaka, T Kawashim1, S Hattori, H Nagatomo, H Kato, N Sato, T Watari, and M Takagi
  • Journal Title: Jornal of Physics, Conference Series Volume: 未定
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Converging Shock Generation with Cone Target Filled with Low Density Foam (2015)
  • Author(s): K Shigemori, T Yamamoto, Y Hironaka, T Kawashim1, S Hattori, H Nagatomo, H Kato, N Sato, T Watari, and M Takagi
  • Organizer: The Ninth International Conference on Inertial Fusion Sciences and Applications (IFSA 2015)
  • Place of Presentation: Seattle, USA
  • Year and Date: 2015-09-20
  • Int'l Joint Research
• [Presentation] 収束衝撃波加熱による新しい高速点火方式の検討 (2015)
  • Author(s): 山本拓未，重森啓介，服部祥治，弘中陽一郎，周暁，加藤弘樹， 佐藤仲弘，渡利威士，高木勝
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-24