Improved laser-to-proton conversion efficiency in isolated reduced mass targets

Morace, A. and Bellei, C. and Bartal, T. and Willingale, L. and Kim, J. and Maksimchuk, A. and Krushelnick, K. and Wei, M. S. and Patel, P. K. and Batani, D. and Piovella, N. and Stephens, R. B. and Beg, F. N. (2013) Improved laser-to-proton conversion efficiency in isolated reduced mass targets. Applied Physics Letters, 103 (5). ISSN 0003-6951

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We present experimental results of laser-to-proton conversion efficiency as a function of lateral confinement of the refluxing electrons. Experiments were carried out using the T-Cubed laser at the Center for Ultrafast Optical Science, University of Michigan. We demonstrate that the laser-to-proton conversion efficiency increases by 50% with increased confinement of the target from surroundings with respect to a flat target of the same thickness. Three-dimensional hybrid particle-in-cell simulations using LSP code agree with the experimental data. The adopted target design is suitable for high repetition rate operation as well as for Inertial Confinement Fusion applications. (C) 2013 AIP Publishing LLC.

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Applied Physics Letters
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07 Oct 2016 09:02
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22 Nov 2022 03:15