Study of Proton stopping power in strongly coupled plasmas for Fast Ignition research.

2015 年度 実績報告書

• 研究課題/領域番号: 26820396
• 研究機関: 大阪大学
• 研究代表者: Morace Alessio 大阪大学, レーザーエネルギー学研究センタ, 助教 (70724326)
• 研究期間 (年度): 2014-04-01 – 2016-03-31
• キーワード: TNSA / RPA / Fast Ignition / ICF / Proton Fast Ignition

研究実績の概要

The project produced very important results that will be published on peer-reviewed journals in the near future, as well as deepened our knowledge on the transport of protons beams in plasmas for Fast Ignition research. The radiography of plasmas in cylindrical geometry has been demonstrated and this measurement provided us important information about the radiography technique, demonstrating that using electrically isolated and separated targets for ion generation and plasma sample is fundamental for the success of the radiographic technique itself. Avoiding indeed self -generated electric and magnetic fields inside the target sample that actively affect the proton beam generation and propagation in the plasma sample. Moreover through this Kakenhi project we had the chance to investigate the ion generation in ultra-thin, sub micro-meter targets, demonstrating a new hybrid TNSA-Radiation Pressure mechanism of ion generation for target thicknesses below 0.3 microns. This result was made possible by the great improvement in the LFEX laser contrast in the last year.
Finally with the purchase of a 2-nodes 40-cores workstation it was possible to investigate by PIC simulation the proton generation and transport in cone-in-shell geometry for Fast Ignition. This revealed the importance of self generated magnetic fields inside the cone that actively affect the proton beam transport to the cone tip, allowing to find different solutions to the problem. All results will be published in peer-reviewed papers within this year.

研究成果

• [雑誌論文] Direct measurement of kilo-tesla level magnetic field generated with laser-driven capacitor-coil target by proton deflectometry (2016)
  • 著者名/発表者名: K. F. F. Law, M. Bailly-Grandvaux, A. Morace et al.
  • 雑誌名: Applied Physics Letters 巻: 108 ページ: 091104
  • DOI: 108/9/10.1063/1.4943078
  • 査読あり / 国際共著 / 謝辞記載あり
• [雑誌論文] Heating efficiency evaluation with mimicking plasma conditions of integrated fast-ignition experiment (2015)
  • 著者名/発表者名: S. Fujioka, T. Johzaki, Y. Arikawa, Z. Zhang, A. Morace et al.
  • 雑誌名: Physical Review E 巻: 91 ページ: 063102
  • DOI: 10.1103/PhysRevE.91.063102
  • 査読あり / 国際共著 / 謝辞記載あり
• [雑誌論文] Laser-driven platform for generation and characterization of strong quasi-static magnetic fields (2015)
  • 著者名/発表者名: J. J. Santos., M. Bailly-Grandvaux, L. Giuffrida, P. Forestier-Colleoni, S. Fujioka, Z. Zhang, P. Korneev, R. Bouillaud, S. Dorard, D. Batani, M. Chevrot, J E. Cross, R. Crowston, J-L. Dubois, J. Gazave, G. Gregori, E. d'Humieres, S. Hulin, K. Ishihara, S. Kojima, E. Loyez, J-R. Marques, A. Morace et al.
  • 雑誌名: New Journal of Physics 巻: 17 ページ: 083051
  • DOI: 10.1088/1367-2630/17/8/083051
  • 査読あり / オープンアクセス / 国際共著 / 謝辞記載あり
• [学会発表] Quasi-monoenergetic proton beams from ultra-thin foils (2015)
  • 著者名/発表者名: A. Morace et al
  • 学会等名: JPS fall
  • 発表場所: Kansai University
  • 年月日: 2015-09-18 – 2015-09-18
• [学会発表] LFEX performances on fast electron and ion generation (2015)
  • 著者名/発表者名: A. Morace et al
  • 学会等名: OPIC2015
  • 発表場所: Pacifico Yokohama
  • 年月日: 2015-05-21 – 2015-05-24
  • 国際学会