Two-dimensional code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport

Ivan G. Lebo; Alexey B. Iskakov; Nikolai N. Demchenko; Jiri Limpouch; Vladislav B. Rozanov; Vladimir F. Tishkin

doi:10.1117/12.558767

10 June 2004 Two-dimensional code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport

Ivan G. Lebo, Alexey B. Iskakov, Nikolai N. Demchenko, Jiri Limpouch, Vladislav B. Rozanov, Vladimir F. Tishkin

Author Affiliations +

Proceedings Volume 5482, Laser Optics 2003: Superintense Light Fields and Ultrafast Processes; (2004) https://doi.org/10.1117/12.558767
Event: Laser Optics 2003, 2003, St. Petersburg, Russian Federation

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. In second series of calculations we have modeled the interaction of nanosecond iodine laser with two-layered target.

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Ivan G. Lebo, Alexey B. Iskakov, Nikolai N. Demchenko, Jiri Limpouch, Vladislav B. Rozanov, and Vladimir F. Tishkin "Two-dimensional code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport", Proc. SPIE 5482, Laser Optics 2003: Superintense Light Fields and Ultrafast Processes, (10 June 2004); https://doi.org/10.1117/12.558767

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KEYWORDS

Absorption

Plasma

Electron transport

Optical simulations

Algorithm development

Explosives

Picosecond phenomena

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