Microinstabilities of light ion beams in fusion target chambers

In the investigation of inertial confinement fusion by a light ion beam (LIB), it is the most important problem to pr opagate the LIB stably through the chamber to the target. Mainly this concept is being carried with the method by use of plasma channels theoretically and experimentally for propagation of LIB in a reactor. In our previous theoretical investigations, it has appeared that the microinstabilities are the most deleterious instabilities for LIB propagation in the plasma channel. Especially, in the parameter region of inertial confinement fusion, LIB can not propagate through a target chamber without triggering the instabilities or with sufficiently slow instability growth. In order to restrain the instabilities, we have proposed the method of rotating ion layer as a possible driver for inertial confinement fusion. The equilibrium and microinstabilities of the rotating ion layer investigated are by the basis of the Vlasov-Maxwell equations. Consequently, it is clarified that the most dangerous instabilities for the problem of the propagation of LIB can be stabilized by the magnetic fields due to the rotation of the ion beam.