Self-similar adiabatic compression of highly elongated field reversed configurations

Abstract

A theoretical model of an elongated field reversed configuration (FRC) adiabatically compressed to high density by an imploding liner is presented. Compression is assumed to be self-similar, equal along length and radius, and is accomplished by means of a shaped liner [D.D. Ryutov, R.P. Drake, et al., Fusion Technol. 30 (1996) 310]. In particular, the model here takes into account the special magnetic topology of the FRC, and the nonuniformity of the radial plasma profiles in order to quantify final to initial compression ratios of the fluid quantities.

Particle and heat transport in a dense wall-confined MTF plasma (theory and simulations)

“…This paper contains the results of the most recent analyses of the corresponding phenomena. Another set of issues, mostly related to gross equilibrium and stability of one of the favourite MTF configurations-the FRC-is considered in recent publications [7][8][9][10][11][12][13][14]. Key parameters of the systems, which we will discuss below, are provided in table 1.…”

Magnetized Target Fusion With Centimeter-Size Liners

“…Consider 3D implosion of a target with the initial beta ~ 1 (beta is the ratio of the plasma pressure to the magnetic pressure). The 10-fold linear compression (1000-fold volumetric compression) would mean that the plasma beta in the imploded state is high, ~ 10 [1,5]. This, in turn, means that one will have to deal with the so-called wall confinement, where the magnetic field embedded into the plasma will serve mostly to suppress the heat loss, while the mechanical equilibrium would be provided by the liner inertia, with the possibility that a thin layer of a high field is formed at the plasma-liner interface [6][7][8].…”