ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Recently the low-density foam-like materials have been found to be very attractive for various applications in high energy-density physics. Irradiation of these materials by powerful laser pulses is a promising approach for plasma formation with parameters being of interest for inertial confinement fusion, x-ray lasers, modeling of astrophysical phenomena, etc. This article is devoted to development and application of diagnostic methods in experiments on irradiation of planar low-density (0.5–10 mg/cm3) porous targets with powerful laser pulses (1013–1014 W/cm2). To obtain reliable information on high-temperature dense plasma formation, plasma dynamics, and energy transfer in the target interior, we used a number of optical and x-ray diagnostics providing high spatial (∼10 μm) and temporal (∼10 ps) resolution. High-speed x-ray imaging, multiframe optical shadowgraphy, and interferometry, as well as scattered laser light spectroscopy at the fundamental frequency and its harmonics were used in each experiment. Only being used simultaneously these diagnostic methods provide the possibility of understanding the complicated physical processes inside laser irradiated foam-like materials. The possibilities of the diagnostic complex are illustrated by examples of obtained results and corresponding data analysis. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1323482
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