A.V. Pinegin

TL;DR: In this article, the results of experiments with the targets in the form of a Cu spherical hohlraum, the internal surface of which is coated with Au, with six holes for laser radiation input were performed on the ISKRA-5 facility.

TL;DR: The main effort of the ICF target fabrication group is support of the experiments performed on the ISKRA-4 and Iskra-5 laser systems The main types of targets used in these experiments are direct drive, inverted corona, and indirect drive targets as discussed by the authors.

TL;DR: In this paper, an ion model of plasma is applied for calculations of the radiative properties of complex materials over a wide range of plasma parameters, and an optimization method is used for the selection of an effective complex hohlraum wall material, which provides high radiation efficiency at laser interaction with the wall.

Abstract: The spatiotemporal smoothing of the intensity distribution of a focused laser beam was investigated on the Iskra-4 laser setup using a dynamic plasma phase plate produced by vaporisation of a special target placed at the beginning of the caustic of the focused beam. It is shown that the transmittance of the plasma target in the 1013— 2 × 1014 W cm-2 intensity range is no less than 70% — 80%. The introduction of the dynamic plasma phase plate lowered the relative fluctuations of the spatial intensity distribution from 100% to ~10%. The characteristic time of the intensity distribution variation in the focal plane is 0.4 ps.

TL;DR: In this article, experimental and theoretical studies of a glowing plasma object emerging behind a shock front that propagates through the background gas at a pressure of p 0 = 6 torr after laser irradiation of a hollow spherical target are presented.