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Experience of micro-heterogeneous target fabrication to study energy transport in plasma near critical density

Published online by Cambridge University Press:  08 June 2006

Lebedev Physical Institute, Moscow, Russia
Lebedev Physical Institute, Moscow, Russia
Troitsk Institute for Innovation and Thermonuclear Research, Troitsk, Russia
Lebedev Physical Institute, Moscow, Russia
Czech Technical University in Prague, Prague, Czech Republic
Zelinsky Institute of Organic Chemistry, Moscow, Russia


The experience of target fabrication with low-density and cluster heterogeneity is presented. Cluster plasma research is strongly dependent on target fabrication development and target structure characterization. Ten more target parameters should be measured for experiment interpreting in case of micro-heterogeneous plasma. Foam and foil targets, high-Z doped also, are produced and irradiated on the existing laser facilities. The density of 4.5 mg/cc cellulose triacetate in the form of regular three-dimensional polymer networks are achieved which is as low as plasma critical density for the third harmonic of iodine laser light. The possibilities of varying important target parameters, methods of their monitoring are discussed. Experiments with underdense foam targets with or without clusters irradiated on Prague Asterix Laser System (PALS) laser facility are analyzed preliminary for target optimization. Under-critical foams of varying structure (closed-cell foam or three-dimensional networks) and densities are reported for plasma experiments. Thermal and radiation transport in such targets are considered.

Research Article
© 2006 Cambridge University Press

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