3D SIMULATION RESULTS FOR CONVERSION OF LASER RADIATION TO X-RAY RADIATION IN A SPHERICAL HOHLRAUM UNDER THE MEGAJOULE LASER FACILITY CONDITIONS
S. V. Bondarenko, E. I. Mitrofanov, L. F. Potapkina, O. O. Sharov
VANT. Ser.: Mat. Mod. Fiz. Proc 2020. Вып.3. С. 11-22.
The paper presents results of one-dimensional (using the SNDP code) and three-dimensional (using the MIMOZA-ND3D code) simulations of the laser radiation conversion to X-rays for compressing capsules with a plastic (CH) ablator and an ablator made of high-density carbon (HDC). The laser facility for irradiating a spherical hohlraum has a full system of cube symmetries (6 inlet openings to deliver radiation to the hohlraum). On the assumption of such conditions and symmetry of the target itself it is suggested to perform 3D simulations for a 1/48 part of the target, this allows significantly decreasing the computational burden. The 3D simulation has demonstrated that an essential part of the delivered laser radiation is absorbed in the interior space of the hohlraum near the inlet openings, in plasma "evaporated" due to radiation from the hohlraum walls. Keywords: indirect irradiation of a target, a spherical hohlraum, laser radiation, X-ray radiation, plastic (CH) ablator, HDC-ablator.
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