HIGH CURRENT ION BEAM GENERATION BY NONLINEAR PONDEROMOTIVE FORCE OF HIGH INTENSITY UV LASER
E. Yazdani 1, H. Afarideh 1, R. Sadighi-Bonabi 2, H. Hora 3
1 Department of Nuclear Engineering and Physics, Amirkabir University of Technology
2 Department of Physics, Sharif University of Technology, P.O. Box 11365-9567, Tehran, Iran
3 Department of Theoretical Physics, University of New South Wales, Sydney 2052, Australia
Abstract. Using the anomaly at plasma interaction of petawatt-picosecond laser pulses with very high contrast ratio to generate plane geometry highly directed plasma blocks for laser fusion [1], the details of the block generation were studied [2].the aim was to produce plasma blocks with dielectrically generated highest possible initial thicknesses. One of the goals in laser-plasma interaction studies is to convert as much laser energy as possible into energetic particles. Most laser ion accelerations have only been done using infrared lasers. In this work, dependency of the laser energy absorption to laser wave-Length for a given laser intensity is investigated numerically. High intensity UV laser absorption by Raleigh plasma density is examined. High current ion beams generated by nonlinear ponderomotive force of intense UV laser with Hydrodynamics computation based on a genuine two-fluid code are presented.
[1] H. Hora, J. Badziak et al. Physics of Plasmas 14, 072701 (2007)
[2] E. Yazdani, Y. Cang et al. Laser and Particle Beams 27, No. (2009)