Study of high-aspect ratio capsule in indirect-drive experiments at the ISKRA-5 facility

Abstract

Two shells with the diameter of 0.8–0.9 mm and a wall thickness of ≅1 μm were produced at the Lebedev Physics Institute for the experiments conducted at the ISKRA-5 facility. The results of two experiments with the aforementioned shells conducted at the ISKRA-5 facility with the use of an indirect-drive set up. In one of the experiments, the diameter of the golden hohlraum was D = 2 mm while in the other it was D = 4 mm. In these experiments it was observed to be ≅4 times the difference of the average laser intensity on the hohlraum surface. The results of computational analysis of the experiments are also presented here.

Preliminary study on a tetrahedral hohlraum with four half-cylindrical cavities for indirectly driven inertial confinement fusion

“…These key challenges might still reside in the rugby-like hohlraums [16][17][18][19][20] with two LEHs. To date, diverse spherical hohlraums, upon which two [21,22], three [23], four [21,[24][25][26][27][28][29][30], six [31][32][33][34], or twelve [21] holes are drilled, with several sets of laser beams with different incident angles, have been investigated on the laser facilities of Iskra-5, OMEGA, or NIF. However, the overlap and cross of laser beams may arouse nonlinear phenomena and complicated laser-plasma interaction issues [35], such as the daunting SRS and CBET.…”