Article overview

Comparison of laser ion acceleration from the front and rear surfaces of thin foils
J Fuchs ; Y Sentoku ; S Karsch ; J Cobble ; P Audebert ; A Kemp ; A Nikroo ; P Antici ; E Brambrink ; A Blazevic ; E M Campbell ; J C Fernández ; J-C Gauthier ; M Geissel ; M Hegelich ; H Pépin ; H Popescu ; N Renard-LeGalloudec ; M Roth ; J Schreiber ; R Stephens ; T E Cowan ;
Date:	4 Feb 2005
Journal:	Phys Rev Lett, 94 (4), 045004
Abstract:	The comparative efficiency and beam characteristics of high-energy ions generated by high-intensity short-pulse lasers (approximately 1-6 x 10(19) W/cm2) from both the front and rear surfaces of thin metal foils have been measured under identical conditions. Using direct beam measurements and nuclear activation techniques, we find that rear-surface acceleration produces higher energy particles with smaller divergence and a higher efficiency than front-surface acceleration. Our observations are well reproduced by realistic particle-in-cell simulations, and we predict optimal criteria for future applications.
Source:	PubMed, pmid15783566
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