| Autor: |
Sheung-wah Ng, Hassam, A. B. |
| Předmět: |
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| Zdroj: |
Physics of Plasmas; Oct2007, Vol. 14 Issue 10, p102508, 9p, 5 Graphs |
| Abstrakt: |
Plasma-neutral interactions along the magnetic field are considered for a centrifugally confined plasma wherein a cross-field plasma rotation inhibits plasma escape along the magnetic field. Analytic and numerical solutions from a simple one-dimensional isothermal model are obtained. It is shown that for perfect recycling, the neutral density at the wall is exponentially smaller than the central plasma density for strong centrifugal confinement compared to the case of no confinement, for which the neutral wall density equals the central plasma density. The exponential factor is effectively exp(-Ms2/2), where Ms is the sonic Mach number of the rotation speed. The effective neutral penetration depth along the field, of the same order as the cross-field penetration depth in the zero confinement limit, increases significantly in the strong confinement case. Estimates are given of plasma transverse momentum loss rates for centrifugally confined plasmas from plasma particle outfluxes and charge-exchange friction. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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