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Proceedings Paper

High-energy ion generation
Author(s): Anatoly M. Maksimchuk; V. Yu. Bychenkov; K. Flippo; H. Krause; Kunioki Mima; Gerard A. Mourou; Koshichi Nemoto; Yasuhiko Sentoku; Donald P. Umstadter; R. Vane
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Paper Abstract

We report on multi-MeV ion beam generation from the interaction of a 10 TW, 400 fs, 1.053 μm laser focused onto thin foil targets at intensities ranging from 1017 to 1019 W/cm2. Ion beam characteristics were studied by changing laser intensity, the preformed plasma scale-length and target material initial conductivity. We manipulated the proton beam divergence by using shaped targets. We observed nuclear transformation induced by high-energy protons and deuterons. A fully relativistic two-dimensional particle-in-cell simulation modeled energetic ion generation. These simulations identify the mechanism for the hot electron generation at the laser-plasma interface. Comparison with experiments sheds light on the dependence of ion-energy on preplasma scale length and solid density plasma thickness as well as relates ion energies for multi-species plasma.

Paper Details

Date Published: 12 December 2003
PDF: 12 pages
Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); doi: 10.1117/12.536776
Show Author Affiliations
Anatoly M. Maksimchuk, Univ. of Michigan (United States)
V. Yu. Bychenkov, P.N. Lebedev Physics Institute (Russia)
K. Flippo, Univ. of Michigan (United States)
H. Krause, Oak Ridge National Lab. (United States)
Kunioki Mima, Osaka Univ. (Japan)
Gerard A. Mourou, Univ. of Michigan (United States)
Koshichi Nemoto, Central Research Institute of Electric Power Industry (Japan)
Yasuhiko Sentoku, Osaka Univ. (Japan)
Donald P. Umstadter, Univ. of Michigan (United States)
R. Vane, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 5228:
ECLIM 2002: 27th European Conference on Laser Interaction with Matter
Oleg N. Krokhin; Sergey Yu. Gus'kov; Yury A. Merkul'ev, Editor(s)

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