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Kinetic to thermal energy transfer and interpenetration in the collision of laser-produced plasmas (1997)

Chenais-Popovics, C. ; Renaudin, P. ; Rancu, O. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Physics of Plasmas 4 (1997), S. 190-208

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ISSN: 1089-7674

Source: AIP Digital Archive

Topics: Physics

Notes: An experimental and numerical analysis of the collision of two plasmas produced from laser-exploded Al/Al and Al/Mg pairs of foils is presented. Various imaging and spectroscopic x-ray techniques have been used to diagnose the collision over a broad range of intertarget distances and laser intensities. Ion temperatures in the 10 keV range have been measured from Doppler broadening. Electron temperatures and densities have been deduced from line ratios and interpenetration distances have been determined by the spatial extent of Mg and Al x-ray lines. Eulerian multifluid simulations have been developed and coupled to atomic physics postprocessing. The comparison of the measurements with these simulations shows that interpenetration prevails at large intertarget distances and high laser intensities; kinetic to thermal energy transfer then takes place on a ∼200-μm wide region and during ∼150 ps. © 1997 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.872132

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