Time resolved FLy {beta} spectroscopic measurements in colliding foil experiments

The experimental results we present here concern the time evolution of the main plasma parameters in the region between two thin laser accelerated Teflon foils as deduced from fluorine H-like and recombination continuum emission, as well as the time evolution of Fluorine Ly{beta} line profile. Two X...

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Bibliographic Details
Published in:AIP conference proceedings 1999-04, Vol.467 (1)
Main Authors: Ceccotti, T., Derfoul, H., Sauvan, P., Angelo, P., Gauthier, P., Poquerusse, A., Chenais-Popovics, C., Leboucher-Dalimier, E., Vollbrecht, M., Foerster, E.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPARATIVE EVALUATIONS
EMISSION SPECTRA
FOILS
HYDRODYNAMICS
ION COLLISIONS
LASER RADIATION
LINE WIDTHS
LYMAN LINES
MULTICHARGED IONS
PHOTOCATHODES
PHOTON EMISSION
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
RECOMBINATION
SPATIAL RESOLUTION
STREAK CAMERAS
TIME RESOLUTION
X-RAY SPECTROSCOPY
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Summary:The experimental results we present here concern the time evolution of the main plasma parameters in the region between two thin laser accelerated Teflon foils as deduced from fluorine H-like and recombination continuum emission, as well as the time evolution of Fluorine Ly{beta} line profile. Two X-ray streak cameras with a time resolution of 10 ps have then been used, recording the emission of a 25 {mu}m sized plasma slice between the foils, to be compared to the initial distance ({approx_equal}100 {mu}m). To obtain a well resolved spectrum despite of the low streak camera photocathode spatial resolution, a high dispersive TlAP spectrometer has been used to record the Ly{beta} line profile. In this way we can associate any particular line profile we record to the plasma conditions producing it. In conclusion this experiment allows quantitative comparison with hydrodynamics code results, post-processed by atomic physics and spectra codes.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.58355