Heating of Laser Plasmas for Thermonuclear Fusion
In this survey the experimental results of the investigation of the laser produced plasmas in a wide interval of energy and light pulse duration are reported. The processes taking place at a dense plasma heated by laser radiation for the obtaining of a thermonuclear yield have been analyzed. The directional motion for heating in the various schemes using cumulative effects is discussed.
The experimental results of plasma heating investigation are described. The laser description and the methods of investigation of plasma parameters are given. The results of measurements of neutron emission from deuterized polyethylene plasma are considered.
Spectroscopic and interferometric studies of gas-dynamical parameters in the process of heating are reported. The interfermetric method of measurement of plasma pressure and momentum carried away by the heated plasma during laser pulse has been carried out. It has been observed that for a conventional laser the maximum of the pressure coincides with the beginning of a pulse.
The application of multi-beam lasers for the target heating is discussed. The laser having a rectangular shape of light pulse with energy of 103 J within 2–16 nsec has been made. The efficiency of the beam energy absorption by the spherical target and the influence of laser beam parameters on this efficiency are determined.
KeywordsPlasma Focus Laser Plasma Neutron Emission Plasma Heating Laser Interaction
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