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10 June 2004 Hard x-ray and high-energy proton production under femtosecond laser interaction with free liquid surface
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Abstract
It was demonstrated experimentally that liquid with low pressure of saturated vapor can be used as target for femtosecond laser plasma formation. Plasma formed at free liquid surface (vacuum oil) in vacuum by femtosecond laser pulse with intensity above 1016 W/cm2 is similar to high-temperature plasma formed at solid target surface. So, from x-ray and ionic time-of-flight measurements the temperature of hot electrons for oil target is 6 ± 3 keV and for crystalline silicon target is 4 ± 1 keV. The optics diagnostic of liquid surface relaxation has shown that upper repetition rate of laser pulses for interaction with non-perturbed liquid surface is 10 Hz.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daria S. Uryupina, Vyacheslav M. Gordienko, P. M. Mikheev, Andrey B. Savel'ev, and R. V. Volkov "Hard x-ray and high-energy proton production under femtosecond laser interaction with free liquid surface", Proc. SPIE 5482, Laser Optics 2003: Superintense Light Fields and Ultrafast Processes, (10 June 2004); https://doi.org/10.1117/12.558602
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