X-ray spectroscopy and imaging of a plasma collision

Claude J. Chenais-Popovics; Ovidiu N. Rancu; P. Renaudin; Jean-Claude J. Gauthier; F. Gilleron; O. Lindenmeyer; H. Kawagoshi; M. Dirksmoeller; Ingo Uschmann; Thomas Missalla; P. C. Sondhauss; Eckhart Foerster; Oldrich Renner; E. Krousky; Henri Pepin; O. Larroche; Olivier Peyrusse; Terry D. Shepard

doi:10.1117/12.220983

18 September 1995 X-ray spectroscopy and imaging of a plasma collision

Claude J. Chenais-Popovics, Ovidiu N. Rancu, P. Renaudin, Jean-Claude J. Gauthier, F. Gilleron, O. Lindenmeyer, H. Kawagoshi, M. Dirksmoeller, Ingo Uschmann, Thomas Missalla, P. C. Sondhauss, Eckhart Foerster, Oldrich Renner, E. Krousky, Henri Pepin, O. Larroche, Olivier Peyrusse, Terry D. Shepard

Author Affiliations +

Proceedings Volume 2523, Applications of Laser Plasma Radiation II; (1995) https://doi.org/10.1117/12.220983
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The collision of laser-produced plasmas has been diagnosed by x-ray spectroscopy and imaging. The two colliding plasmas are produced on Al thin foils at a distance of 200 to 900 micrometers irradiated at (lambda) equals 0.53 micrometers with laser intensities of 3 X 10¹³ to 6 X 10¹³ W/cm². Interpretation of the plasmas was visualized by replacing one of the foils material by magnesium. The main diagnostics were x-ray crystal optics based on flat, cylindrical, and toroidal crystals viewing the inter-target space. A multifluid eulerian monodimensional hydrodynamic code coupled with a radiative-atomic package provided simulations of the experiments. Hydrodynamic 2D simulations calculating the lateral expansion of the plasma enabled a reliable treatment of reabsorption along the line of sight of the spectrographs. The size and the time duration of the collision, the plasma parameters in the collision region (T_e, T_i, and n_e) and interpenetration were measured. The hydrocode simulations give a good understanding of the behavior of the collision in function of intertarget distance and laser intensity.

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Claude J. Chenais-Popovics, Ovidiu N. Rancu, P. Renaudin, Jean-Claude J. Gauthier, F. Gilleron, O. Lindenmeyer, H. Kawagoshi, M. Dirksmoeller, Ingo Uschmann, Thomas Missalla, P. C. Sondhauss, Eckhart Foerster, Oldrich Renner, E. Krousky, Henri Pepin, O. Larroche, Olivier Peyrusse, and Terry D. Shepard "X-ray spectroscopy and imaging of a plasma collision", Proc. SPIE 2523, Applications of Laser Plasma Radiation II, (18 September 1995); https://doi.org/10.1117/12.220983

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