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Proceedings Paper

2D Lagrangian code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport
Author(s): Alexey B. Iskakov; Nikolai N. Demchenko; Ivan G. Lebo; Vladislav B. Rozanov; Vladimir F. Tishkin
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Paper Abstract

Hot electrons may significantly influence interaction of ultra short laser pulses with solids. Accurate consideration of resonant absorption of laser energy and hot electrons generation at a critical surface was achieved through the developed physical and mathematical models. 2D ray tracing algorithm has been developed to simulate laser beam refraction and Bremsstrahlung absorption with allowance for non-linear influence of a strong electromagnetic field. Hot electrons transport was considered as a straight-line flows weakening by a friction force calculated in the approximation of the average state of ionization. Developed models were coupled with 2D Lagrangian gas dynamic code "ATLANT" that takes into account non-linear heat transport. The developed program has been applied to simulate irradiations of Al foils by picosecond laser double pulses. Hot electrons transport and heating resulted in thin foil explosions. The transition from exploding foil regime to the ablative one with foil thickening has been simulated and analyzed at various values of laser light intensity.

Paper Details

Date Published: 12 December 2003
PDF: 8 pages
Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); doi: 10.1117/12.536552
Show Author Affiliations
Alexey B. Iskakov, Institute for Mathematical Modelling (Russia)
Nikolai N. Demchenko, P.N. Lebedev Physical Institute (Russia)
Ivan G. Lebo, P.N. Lebedev Physical Institute (Russia)
Moscow Institute of Radioengineering, Electronics and Automation (Russia)
Vladislav B. Rozanov, P.N. Lebedev Physical Institute (Russia)
Vladimir F. Tishkin, Institute for Mathematical Modelling (Russia)

Published in SPIE Proceedings Vol. 5228:
ECLIM 2002: 27th European Conference on Laser Interaction with Matter
Oleg N. Krokhin; Sergey Yu. Gus'kov; Yury A. Merkul'ev, Editor(s)

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