Laser-Driven Implosion Magnetohydrodynamics and Hydrodynamic Instabilities of the Magnetized Target V.V

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Laser-Driven Implosion Magnetohydrodynamics and Hydrodynamic Instabilities of the Magnetized Target V.V

42nd EPS Conference on Plasma Physics P4.222 Laser-driven implosion magnetohydrodynamics and hydrodynamic instabilities of the magnetized target V.V. Kuzenov, S.V. Ryzhkov Bauman Moscow State Technical University, Moscow, Russia Investigation of hydrodynamic issues related to magneto-inertial fusion (MIF) [1-7] is undertaken. The existence of magnetic field embedded in plasma partially solves the problem of radiation-magnetic hydrodynamic instabilities such as the Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) (the magnetization of plasma is accompanied by suppression of RT and RM instabilities). It is important to note that the condition of thermonuclear ignition of a D-T mixture in a magnetic field of strength H , is significantly attenuated in comparison with traditional inertial confinement fusion. The duration of action of an external energy source is an arbitrary relationship with the time of passage of hydrodynamic disturbances through the body of the target. The ignitor is the area with the minimum radial dimension, where hot and dense plasma is formed in less time (much shorter) than gas-dynamic expansion. There are several ways to create ignitor: fast electrons and ions of the laser plasma, heavy ion beam, X-ray pulse and hydrodynamic plasma flow. The last case is based on acceleration, compression and detonation of thermonuclear material in a conical nozzle (a part of the target for inertial confinement fusion) by the plasma flow/jets, formed in the plasma accelerator/gun. This approach allows more rapid ignition of the target for the velocity in plasma accelerator ~ 300 - 500 km/s. This work was supported by the Ministry of Education and Science of the Russian Federation (GosZadanie № 13.79.2014/K). References [1] O.V. Gotchev, P.Y. Chang, J.P. Knauer, et al, Physical Review Letters 103, 215004-4 (2009). [2] S.V. Ryzhkov, “The behavior of a magnetized plasma under the action of laser with high pulse energy,” Problems of Atomic Science and Technology №4 (7), 105-110 (2010). [3] V.V. Kuzenov, S.V. Ryzhkov, Probl. Atom. Sci. Tech. № 1 (83), 12-14 (2013); № 4 (86), 103-107 (2013). [4] S.V. Ryzhkov, Bulletin of the Russian Academy of Sciences. Physics 78, 456-461 (2014). [5] S.A. Slutz, R.A. Vesey, “High-gain magnetized inertial fusion,” Phys. Review Letters 108, 025003 (2012). [6] J.H. Degnan, et al, “Recent MIF experiments on the FRCHX” Nucl. Fusion 53, 093003 (2013). [7] M.R. Gomez, et al, Physical Review Letters 113, 155003 (2014). .

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