1. Studying the Dynamics of Relativistic Laser-Plasma Interaction on Thin Foils by Means of Fourier-Transform Spectral Interferometry
- Author
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F. Wagner, Jörg Schreiber, Markus Roth, M. Haug, Christian Brabetz, J. Hornung, P. Hilz, Vincent Bagnoud, Theodor Schlegel, and Bernhard Zielbauer
- Subjects
Physics ,Range (particle radiation) ,business.industry ,General Physics and Astronomy ,Phelix ,Plasma ,Laser ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,Pulse (physics) ,Interferometry ,symbols.namesake ,Optics ,Fourier transform ,law ,Picosecond ,0103 physical sciences ,symbols ,010306 general physics ,business - Abstract
We apply Fourier-transform spectral interferometry (FTSI) to study the interaction of intense laser pulses with ultrathin targets. Ultrathin submicrometer-thick solid CH targets were shot at the PHELIX laser facility with an intensity in the mid to upper 10^{19} W/cm^{2} range using an innovative double-pulse structure. The transmitted pulse structure was analyzed by FTSI and shows a transition from a relativistic transparency-dominated regime for targets thinner than 500 nm to a hole-boring-dominated laser-plasma interaction for thicker targets. The results also confirm that the inevitable preplasma expansion happening during the rising slope of the pulse, a few picoseconds before the maximum of the pulse is reached, cannot be neglected and plays a dominant role in laser-plasma interaction with ultrathin solid targets.
- Published
- 2017
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