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Reducing ion energy spread in hole-boring radiation pressure acceleration by using two-ion-species targets

Published online by Cambridge University Press:  23 January 2015

S. M. Weng ,
M. Murakami  and
Z. M. Sheng
S. M. Weng*
Affiliation:
Key Laboratory for Laser Plasmas, Department of Physics and Astronomy, IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai, China
M. Murakami
Affiliation:
Institute of Laser Engineering, Osaka University, Osaka, Japan
Z. M. Sheng
Affiliation:
Key Laboratory for Laser Plasmas, Department of Physics and Astronomy, IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai, China SUPA, Department of Physics, University of Strathclyde, Glasgow, United Kingdom
*
Address correspondence and reprint requests to: S. M. Weng, Key Laboratory for Laser Plasmas, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China. E-mail: wengsuming@gmail.com
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Abstract

The generation of fast ion beams in the hole-boring radiation pressure acceleration by intense laser pulses has been studied for targets with different ion components. We find that the oscillation of the longitudinal electric field for accelerating ions can be effectively suppressed by using a two-ion-species target, because fast ions from a two-ion-species target are distributed into more bunches and each bunch bears less charge. Consequently, the energy spread of ion beams generated in the hole-boring radiation pressure acceleration can be greatly reduced down to 3.7% according to our numerical simulation.

Keywords

Energy spreadFast ion beamIon accelerationTwo-ion-species target

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Type
Research Article
Information
Laser and Particle Beams , Volume 33 , Issue 1 , March 2015 , pp. 103 - 107
Copyright
Copyright © Cambridge University Press 2015 

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