Langmuir probe characteristics in a high pressure plasma in the presence of convection and ionization

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/27.310652· OSTI ID:6974316

Clements, R M ^[1]; Rizvi, S A.H.; Smy, P R ^[2]

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1. Univ. of Victoria, British Columbia (Canada). Dept. of Physics and Astronomy
2. Univ. of Alberta, Edmonton (Canada). Dept. of Electrical Engineering

The current to a Langmuir probe operating in a high pressure flowing plasma is calculated for the case where convection of electrons or ions into the sheath adjacent to the probe and thermal generation of electrons and ions within the sheath can both be significant factors in determining probe current. In addition to generating explicit relations for planar, spherical and cylindrical probes for the asymptotic case in which only generation need be considered, a solution is also obtained for the extensive transition between this state and the purely convective state, for which explicit solutions already exist. The theory, which enables the electron/ion density to be calculated from the probe current is applicable to both positive and negative probes.

• OSTI ID: 6974316
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 22:4; ISSN ITPSBD; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURRENTS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC PROBES
ELECTRON DENSITY
ION DENSITY
LANGMUIR PROBE
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA JETS
PLASMA SHEATH
PROBES