Zobrazeno 1 - 10
of 30
pro vyhledávání: '"C. Popovics"'
Publikováno v:
International Astronomical Union Colloquium. 86:242-245
Spectral line profiles, broadened mostly by Stark effects from electric fields produced by charge particles, and diélectronic satellite line intensities have recently been used for determining electron densities in the dense region of laser-created
Publikováno v:
Review of Scientific Instruments. 50:1583-1586
A polarized light interferometer, suitable for the high-speed photography of microscopic objects in laser fusion experiments, is described. Based on a Wollaston prism as beam splitter, its main advantages are its relative simplicity, the absence of a
Autor:
H. Pépin, E. Fabre, C. Garban, C. Stenz, C. Popovics, M. Weinfeld, R. Benattar, A. Poquerusse, R. Fabbro, J. Virmont
Publikováno v:
Le Journal de Physique Colloques. 39:C1-234
Nous etudions la densite electronique et son gradient dans l'interaction d'un laser a CO2 avec une cible plane de polyethylene, pour un flux laser de 1012 W/cm2. L'etude par interferometrie Jamin des profils de densite et la mesure strioscopique de s
Autor:
C. Popovics, R. Benattar
Publikováno v:
Journal of Applied Physics. 54:603-608
We report an experimental laser technique of quantitative Schlieren imaging of spherical plasmas combined with streak camera recording. We show that quantitative refractometry applies for small values of refraction angles, i.e., when the law giving t
Publikováno v:
Physical Review Letters. 42:766-769
The density profile in the corona of 70-..mu..m-diam glass spheres, irradiated by 50-GW pulses from a Nd-glass laser, was measured in the density range 2 x 10/sup 19/ < n/sub e/ < 3 x 10/sup 20/cm/sup -3/. The profile was found to be rather flat. In
Publikováno v:
Physical Review A. 30:1582-1585
Autor:
R. Benattar, C. Popovics
Publikováno v:
Physical Review Letters. 45:1108-1111
Autor:
C. Popovics
Publikováno v:
Journal de Physique. 36:1089-1094
Autor:
C. Popovics, R. Benattar
Publikováno v:
Journal of Applied Physics. 54:609-614
We report experimental results deduced from quantitative Schlieren imaging of plasmas combined with streak camera recording. Flat or spherical targets are illuminated with one laser beam, at different wavelengths (1.06 μm, 0.53 μm, 10.6 μm): We sh
Publikováno v:
Journal of Physics D: Applied Physics. 16:1929-1941
Band-shaped aluminium implants on plane carbon targets were irradiated at 0.1-2*1015 W cm-2 by 600 ps laser pulses of 0.527 mu m wavelength. The resulting blow-off plasmas were diagnosed by X-ray spectroscopy using entrance slits of various dimension