2011
DOI: 10.1063/1.3646745
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Current drive in recombining plasma

Abstract: The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the effect of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substant… Show more

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Cited by 3 publications
(3 citation statements)
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“…Since the number of fast current carriers is small compared to the bulk current carriers, the induced electric field affects primarily bulk electrons, producing current with classical resistivity. What is addressed and simulated here is the wave-generated current, I rf (t), for which the induced field can be ignored [6]. Thus a different choice of plasma parameters and expansion rates could yield a switch-like means to produce either bursts of current or voltage.…”
mentioning
confidence: 99%
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“…Since the number of fast current carriers is small compared to the bulk current carriers, the induced electric field affects primarily bulk electrons, producing current with classical resistivity. What is addressed and simulated here is the wave-generated current, I rf (t), for which the induced field can be ignored [6]. Thus a different choice of plasma parameters and expansion rates could yield a switch-like means to produce either bursts of current or voltage.…”
mentioning
confidence: 99%
“…However, Appendix A of [6] shows that the relaxation of the fast-particle current is minimally affected by the induced dc field driving an Ohmic counter-current. Then the I rf (t) calculated here can be inserted into the circuit equation along with some L/R time [8], and the solution I(t) then represents the net plasma current.…”
mentioning
confidence: 99%
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