中国物理B ›› 2013, Vol. 22 ›› Issue (12): 124102-124102.doi: 10.1088/1674-1056/22/12/124102

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Effects of density profile and multi-species target on laser-heated thermal-pressure-driven shock wave acceleration

王凤超   

  1. School of Science, Shanghai Institute of Technology, Shanghai 201418, China
  • 收稿日期:2013-04-19 修回日期:2013-06-17 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the Shanghai Natural Special Foundation for Outstanding Young Teachers in University, China (Grant No. yyy10043).

Effects of density profile and multi-species target on laser-heated thermal-pressure-driven shock wave acceleration

Wang Feng-Chao (王凤超)   

  1. School of Science, Shanghai Institute of Technology, Shanghai 201418, China
  • Received:2013-04-19 Revised:2013-06-17 Online:2013-10-25 Published:2013-10-25
  • Contact: Wang Feng-Chao E-mail:fcwang@sit.edu.cn
  • Supported by:
    Project supported by the Shanghai Natural Special Foundation for Outstanding Young Teachers in University, China (Grant No. yyy10043).

摘要: The shock wave acceleration of ions driven by laser-heated thermal pressure is studied through one-dimensional particle-in-cell simulation and analysis. The generation of high-energy mono-energetic protons in recent experiments (D. Haberberger et al., 2012 Nat. Phys. 8 95) is attributed to the use of exponentially decaying density profile of the plasma target. It does not only keep the shock velocity stable but also suppresses the normal target normal sheath acceleration. The effects of target composition are also examined, where a similar collective velocity of all ion species is demonstrated. The results also give some reference to future experiments of producing energetic heavy ions.

关键词: laser–, ion acceleration, shock wave, particle-in-cell simulation

Abstract: The shock wave acceleration of ions driven by laser-heated thermal pressure is studied through one-dimensional particle-in-cell simulation and analysis. The generation of high-energy mono-energetic protons in recent experiments (D. Haberberger et al., 2012 Nat. Phys. 8 95) is attributed to the use of exponentially decaying density profile of the plasma target. It does not only keep the shock velocity stable but also suppresses the normal target normal sheath acceleration. The effects of target composition are also examined, where a similar collective velocity of all ion species is demonstrated. The results also give some reference to future experiments of producing energetic heavy ions.

Key words: laser–, ion acceleration, shock wave, particle-in-cell simulation

中图分类号:  (Laser-driven acceleration?)

  • 41.75.Jv
52.38.Kd (Laser-plasma acceleration of electrons and ions) 52.65.Rr (Particle-in-cell method)