ELECTRON ENERGY DISTRIBUTION FUNCTION IN Xe PLASMA IN THE PRESENCE OF COULOMB COLLISIONS

Ershov, A. P.; Kuzovnikov, A. A.

doi:10.1051/jphyscol:19797252

Cited by 1 publication

(1 citation statement)

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“…In this way, it is very important to ensure that the measured EEDF is a Maxwellian one, since both the two theories discussed in this article, for the positive ion current collected by the probe, assume the EEDF to be Maxwellian. If non-Maxwellian effects are neglected, such as the EEDF being the superposition of a low temperature body and a higher temperature tail, corresponding to two electron populations with different temperatures, significant erroneous results may be obtained, as several authors have studied [24,[29][30][31]. There are two parameters quite sensitive to ensure the measured EEDF to be Maxwellian.…”

Section: Experimental Device and Data Managementmentioning

confidence: 99%

Experimental radial motion to orbital motion transition in cylindrical Langmuir probes in low pressure plasmas

Díaz‐Cabrera

Ballesteros

Palop

et al. 2015

Plasma Sources Sci. Technol.

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This article shows a transition in the behavior of the positive ions movement around a cylindrical Langmuir probe which we have experimentally observed in a low pressure plasma. In the case of helium plasma, depending on the plasma conditions, the ion current collected by the probe behaves as predicted by a radial motion theory, by an orbital motion theory, or by none of them when the transition between the two behaviors takes place. In the case of argon and neon plasmas, the ion current is well described by radial motion theories. The knowledge of the positive ions behavior is essential to diagnose the plasma parameters by using the ion saturation zone of the current-voltage characteristic curve. The use of this zone is one of the less intrusive in probe plasma diagnostics methods providing local information about the plasma parameters, since the charge drained from the plasma is very low.

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Section: Experimental Device and Data Managementmentioning

confidence: 99%