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Fundamental difference between picosecond and nanosecond laser interaction with plasmas: Ultrahigh plasma block acceleration links with electron collective ion acceleration of ultra-thin foils

Published online by Cambridge University Press:  09 March 2012

Heinrich Hora
Heinrich Hora*
Affiliation:
Department of Theoretical Physics, University of New South Wales, Sydney, Australia
*
Address correspondence and reprint requests to: Heinrich Hora, Department of Theoretical Physics, University of New South Wales, Sydney 2052Australia. E-mail: h.hora@unsw.edu.au
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Abstract

Arguments are discussed on how ion energy measurements from ultra-thin diamond irradiation with 45 fs laser pulses of 26 terawatt power may be related to the ultra-high acceleration of plasma blocks where the significance of the highly efficient direct conversion of laser radiation into mechanical motion of ions or plasma blocks is dominated by nonlinear (ponderomotive) forces in fundamental contrast to thermo-kinetic dominated interaction with ns laser pulses.

Keywords

Laser-plasma interactionNonlinear (ponderomotive) forcesNon-thermal processPicosecond pulsesUltra-high accelerationUltra-thin targets
Type
Short Communication
Information
Laser and Particle Beams , Volume 30 , Issue 2 , June 2012 , pp. 325 - 328
Copyright
Copyright © Cambridge University Press 2012

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