Laser and Particle Beams



Space-time characterization of laser plasma interactions in the warm dense matter regime


L.F. Cao a1c1 , I. Uschmann a1 , F. Zamponi a1 , T. Kämpfer a1 , A. Fuhrmann a1 , E. Förster a1 , A. Höll a2 , R. Redmer a2 , S. Toleikis a3 , T. Tschentscher a3 and S.H. Glenzer a4
a1 Institute for Optics and Quantum Electronics, Friedrich-Schiller-University, Jena, Germany
a2 Institute for Physics, University Rostock, Rostock, Germany
a3 Hasylab, DESY Hamburg, Hamburg, Germany
a4 L-399, Lawrence Livermore National Laboratory, University of California, Livermore, California

Article author query
cao lf   [Google Scholar] 
uschmann i   [Google Scholar] 
zamponi f   [Google Scholar] 
kämpfer t   [Google Scholar] 
fuhrmann a   [Google Scholar] 
förster e   [Google Scholar] 
höll a   [Google Scholar] 
redmer r   [Google Scholar] 
toleikis s   [Google Scholar] 
tschentscher t   [Google Scholar] 
glenzer sh   [Google Scholar] 
 

Abstract

Laser plasma interaction experiments have been performed using an fs Titanium Sapphire laser. Plasmas have been generated from planar PMMA targets using single laser pulses with 3.3 mJ pulse energy, 50 fs pulse duration at 800 nm wavelength. The electron density distributions of the plasmas in different delay times have been characterized by means of Nomarski Interferometry. Experimental data were compared with hydrodynamic simulation. First results to characterize the plasma density and temperature as a function of space and time are obtained. This work aims to generate plasmas in the warm dense matter (WDM) regime at near solid-density in an ultra-fast laser target interaction process. Plasmas under these conditions can serve as targets to develop X-ray Thomson scattering as a plasma diagnostic tool, e.g., using the Vacuum ultraviolet (VUV) free-electron laser (FLASH) at Dentsches Elektronen-Synchrotron (DESY) Hamburg.

(Received November 28 2006)
(Accepted January 15 2007)


Key Words: Interferometry; Laser plasma interaction; Thomson scattering; Warm dense matter.

Correspondence:
c1 Address correspondence and reprint requests to: L.F. Cao, Institute for Optics and Quantum Electronics, Friedrich-Schiller-University, Max-Wien-Platz 1, D-07743 Jena, Germany. E-mail: cao@ioq.uni-jena.de