Magnetic trap for currentless plasma with elliptic magnetic surfaces - stellaron ("ring stellarator")
Danilkin I.S., Kovrizhnykh L.M.
A stellarator trap is proposed with elliptic magnetic surfaces with semiaxes a and b; this trap has transport coefficients smaller by a factor (b/a)2 than traps with round cross section. At equivalent plasma volumes, this makes it possible to increase the confinement time by a factor (b/a), reducing by the same token the corresponding summary energy ignition threshold and the energy release in the thermonuclear reaction. Estimates of the transport coefficients are obtained within the framework of the so-called "neoclassical" model of collision diffusion.
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![](/ps/1776/article_27029_800_head.png "A stellarator trap is proposed with elliptic magnetic surfaces with semiaxes a and b; this trap has transport coefficients smaller by a factor (b/a)<sup>2</sup> than traps with round cross section. At equivalent plasma volumes, this makes it possible to increase the confinement time by a factor (b/a), reducing by the same token the corresponding summary energy ignition threshold and the energy release in the thermonuclear reaction. Estimates of the transport coefficients are obtained within the framework of the so-called "neoclassical" model of collision diffusion.")