Nonlinear Dynamics of Plasma Particles in Capillary Discharge of Soft X-ray Laser, in Nanotube Sources, in Cylindrical Trap, at Heavy Drop Separation from Plasma Flow, at Enhancement of Beam's Ion Charge
V.I.Maslov, I.I.Aksenov, N.A.Azarenkov1), A.M.Egorov, A.A.Goncharov2), I.N.Onishchenko, G.A.Skorobagat'ko1), I.K.Tarasov, V.N.Tretyakov1)
NSC Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine
The Z-pinch evolution [1] in the capillary discharge of the soft X-ray laser is investigated. It is of interest in connection with the importance of the laser X-ray generation in economic compact systems and wide X-ray applications. One can increase the laser X-ray energy due to increase of the number of the laser pulses. We show that the use of the small magnetic field H can reduce the energy losses, improve the plasma uniformity, provides additional mechanism of laser medium creation, the increase of laser pulse amount. The cylindrical cusp kind of the magnetic field H separator for heavy drop separation from plasma flow for the film coating is very important. Plasma flow propagate along axis. Plasma electrons are magnetized. According to charge neutralization the light positive ions propagate along H to cylindrical wall. We show that for any plasma flow velocity and radius and for any H curvature there is optimum H for the best plasma flow control. For the smaller and larger H the flow control is essentially worse. The expression for optimum H is derived. The excitation of electric trap for beam's electrons, which move through a magnetized metallic tube, is investigated. We show that on the ends of the cylinder two dips of the electric potential are formed and the electric potential hump-trap is formed in the central region of the tube due to development of dissipative, diocotron, gradient, Pierce and stream instabilities.
References
[1]G.Niimi et al. IEEE Pulsed Power Plasma Science. 2001.
[2]G.-H.Jeong et al. Proc. XXV ICPIG. Nagoya. 2 (2001) 155.
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