9 April 2011 Efficient high-quality ion beam generation in laser-foil interaction
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Proceedings Volume 7822, Laser Optics 2010; 78220T (2011) https://doi.org/10.1117/12.884809
Event: Laser Optics 2010, 2010, St. Petersburg, Russian Federation
A remarkable conversion efficiency from laser to protons is demonstrated by particle simulations in a laser-foil interaction. The total laser-proton conversion efficiency becomes 16.7% in an optimized multi-hole target, though a conventional plane foil target serves a low efficiency. When an intense short-pulse laser illuminates the thin foil target, the foil electrons are accelerated around the target by the intense laser. The hot electrons generate a strong electric field, which accelerates the foil protons, and the proton beam is generated. In our previous study, we found that multihole thin-foil target was efficient for the energy conversion from laser to protons [Phys. Rev. E 78, 046401 (2008)], and the energy conversion efficiency was 9.3%. In this paper the results clarify the role of the target hole thickness and depth in the laser-proton energy conversion. The optimized multi-hole foil target provides a remarkable increase in the laser-proton energy conversion efficiency.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Kawata, S. Kawata, A. A. Andreev, A. A. Andreev, T. Takahashi, T. Takahashi, D. Satoh, D. Satoh, D. Barada, D. Barada, O. Klimo, O. Klimo, J. Limpouch, J. Limpouch, Q. Kong, Q. Kong, P. X. Wang, P. X. Wang, Y. Y. Ma, Y. Y. Ma, Z. M. Sheng, Z. M. Sheng, W. M. Wang, W. M. Wang, "Efficient high-quality ion beam generation in laser-foil interaction", Proc. SPIE 7822, Laser Optics 2010, 78220T (9 April 2011); doi: 10.1117/12.884809; https://doi.org/10.1117/12.884809

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