## Advanced Plasma Theory, Volume 25 |

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Page 124

-Sw.m_ -/*»., where the first term describes electron production by electron

collisions with neutral particles, the second electron detachment from

-Sw.m_ -/*»., where the first term describes electron production by electron

collisions with neutral particles, the second electron detachment from

**negative****ions**and the third electron loss due to attachment of electrons. For the**negative****ions**we ...Page 125

For the

term is due to electron attachment, the second due to recombination of positive

with

For the

**negative ions**we have <4.21) A-= /3ne— cr)i+«_— 8ntn- , where the firstterm is due to electron attachment, the second due to recombination of positive

with

**negative ions**and the third due to detachment processes. Finally we have ...Page 127

Starting from very low currents we see the

the same time the positive ion component decreases. The same is true also for

the field E but it is too small to be recognisable in the Fig. 17a. These changes

are ...

Starting from very low currents we see the

**negative ion**component increase. Atthe same time the positive ion component decreases. The same is true also for

the field E but it is too small to be recognisable in the Fig. 17a. These changes

are ...

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adiabatic invariant amplitude approximation assumed Boltzmann equation boundary conditions boundary layer calculated cathode charge coefficient collision column components consider const constant contraction corresponds courbe current density Debye length derived differential equations diffusion discharge dispersion relation distribution function double adiabatic theory effect eigenvalue electric field electromagnetic waves electrostatic energy principle equations of motion equilibrium expand experimental finite fluid theory frequency given Hence hydromagnetic inertia-limited instability integral interaction ionized Kruskal Kulsrud l'axe magnétique lignes limit linear theory lowest order magnetic field Maxwell's equations mode negative ions nonlinear obtain Ohm's law parameter particle perturbation Phys plasma oscillations plasma physics Poisson's equation potential pressure problem produced quantities radial region satisfied saturation current self-adjointness solution solving stability surface temperature thermal tion transverse wave values vanish variables vector velocity Vlasov equation waves in plasmas zero zero-order