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Optimization for deuterium ion acceleration in foam targets by ultra-intense lasers

Published online by Cambridge University Press:  17 June 2010

M.A. Bari ,
Z.M. Sheng ,
W.M. Wang ,
Y.T. Li ,
M. Salahuddin ,
M.H. Nasim ,
G. Shabbir Naz ,
M.A. Gondal  and
J. Zhang
M.A. Bari*
Affiliation:
Pakistan Atomic Energy Commission, Islamabad, Pakistan Laboratory of Optical Physics, Institute of Physics, CAS, China
Z.M. Sheng
Affiliation:
Laboratory of Optical Physics, Institute of Physics, CAS, China Department of Physics, Shanghai Jiao Tong University, Shanghai, China
W.M. Wang
Affiliation:
Laboratory of Optical Physics, Institute of Physics, CAS, China
Y.T. Li
Affiliation:
Laboratory of Optical Physics, Institute of Physics, CAS, China
M. Salahuddin
Affiliation:
Pakistan Atomic Energy Commission, Islamabad, Pakistan
M.H. Nasim
Affiliation:
Pakistan Atomic Energy Commission, Islamabad, Pakistan
G. Shabbir Naz
Affiliation:
Pakistan Atomic Energy Commission, Islamabad, Pakistan
M.A. Gondal
Affiliation:
Pakistan Atomic Energy Commission, Islamabad, Pakistan
J. Zhang
Affiliation:
Laboratory of Optical Physics, Institute of Physics, CAS, China Department of Physics, Shanghai Jiao Tong University, Shanghai, China
*
Address correspondence and reprint requests to: M. Abbas Bari, Pakistan Atomic Energy Commission, P. O. Box 1114, Islamabad, 44000, Pakistan. E-mail: [email protected]
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Abstract

In this article, we investigate the effects of foam target composition and laser parameters on deuterium ion energy spectra with particle-in-cell simulations. We find that localized electrostatic fields with multi peaks around the surfaces of lamellar layers inside foam target are induced. These fields accelerate deuterium ions from thin foam layers by restricting the flow of hot electrons. This mechanism of ion acceleration called as bulk ion acceleration generates large number of high energy deuterium ions. Deuterons inside foam target are accelerated up to 126 MeV in case of oblique optimal angle of 30° where it is much greater than the normal laser incidence energy of 88 MeV.

Keywords

Bulk ion accelerationDeuteron accelerationFoam targetIntense laserLaser-produced plasma
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 2 , June 2010 , pp. 333 - 341
Copyright
Copyright © Cambridge University Press 2010

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