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In Russia, the Iskra-6 laser facility with pulse energy of up to 300 kJ and nanosecond pulse duration was being planned Kirillov et al., 2000!. The possibility of thermonuclear ignition with this laser energy was a goal of the theoretical investigation at RFNC-VNIITF. Results of one-dimensional~1D! and two-dimensional~2D! modeling of indirectdriven targets for ignition on the Iskra-6 laser facility are presented. Sensitivity of cryogenic single-shell and non-cryogenic double-shell targets to radiation flux non-uniformity and shells roughness are studied.

A computational analysis is performed to investigate the suppression mechanism of magnetohydrodynamic (MHD) instability. Three different techniques have been considered which allow us to reduce the total growth of the instability: 1. doublecascades liner; 2. linear rotation and 3. externally generated axial magnetic field. Double gas-puff with specifically structured density: massive inner shell and light outer one for a given current shape makes it possible to suppress significantly the MHD instability evolution. Possible mechanism of the instability dumping has been proposed. The load design is being analyzed for the case of liner rotation with initial angular velocity. Different values of the velocities have been considered. The using of an external magnetic field allows us to suppress the instability when the field reaches the specified shape and optimal value. The estimation of the fraction of magnetic energy and energy of rotation in the full energy of the liner is done. The influence of axial field on MHD instability growth is analyzed.

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