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New micro-cones targets can efficiently produce higher energy and lower divergence particle beams

Published online by Cambridge University Press:  07 September 2010

N. Renard-Le Galloudec*
Affiliation:
Nevada Terawatt Facility, Department of Physics, University of Nevada, Reno, Nevada
E. D'Humieres
Affiliation:
CELIA, Université de Bordeaux - CNRS - CEA, Talence, France
*
Address correspondence and reprint requests to: N. Renard-Le Galloudec, Nevada Terawatt Facility, Department of Physics, University of Nevada, Reno, Nevada 89557. E-mail: [email protected]

Abstract

Small conical targets have been used in high intensity laser target interaction mostly in the context of fast ignition. We demonstrate that when cone targets are shaped appropriately and used with specific interaction conditions, they can produce particle beams of higher maximum energy and number in a lower angular divergence than flat targets. This is relevant to fast ignition, small compact particle beams, medical applications, focused ion and/or electron beam microscopes. This fact carries the potential to produce particle beams that are no longer limited by the characteristics of the laser. Note that for fast ignition, reducing the divergence of the beam lowers the energy requirement and enhances the energy deposition into the compressed fuel.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2010

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