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Proceedings Paper

Efficient high-quality ion beam generation in laser-foil interaction
Author(s): S. Kawata; A. A. Andreev; T. Takahashi; D. Satoh; D. Barada; O. Klimo; J. Limpouch; Q. Kong; P. X. Wang; Y. Y. Ma; Z. M. Sheng; W. M. Wang
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Paper Abstract

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.

Paper Details

Date Published: 9 April 2011
PDF: 6 pages
Proc. SPIE 7822, Laser Optics 2010, 78220T (9 April 2011); doi: 10.1117/12.884809
Show Author Affiliations
S. Kawata, Utsunomiya Univ. (Japan)
A. A. Andreev, S.I. Vavilov State Optical Institute (Russian Federation)
T. Takahashi, Utsunomiya Univ. (Japan)
D. Satoh, Utsunomiya Univ. (Japan)
D. Barada, Utsunomiya Univ. (Japan)
O. Klimo, Czech Technical Univ. in Prague (Czech Republic)
J. Limpouch, Czech Technical Univ. in Prague (Czech Republic)
Q. Kong, Fudan Univ. (China)
P. X. Wang, Fudan Univ. (China)
Y. Y. Ma, Utsunomiya Univ. (Japan)
National Univ. of Defense Technology (China)
Z. M. Sheng, Shanghai Jiao Tong Univ. (China)
W. M. Wang, Utsunomiya Univ. (Japan)
Institute of Physics (China)

Published in SPIE Proceedings Vol. 7822:
Laser Optics 2010
Nikolay N. Rosanov; Vladimir Yu. Venediktov, Editor(s)

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