Accession Number : AD0754315

Title :   Transition from Sheath-Convection to Saturation-Current Behaviour of a Langmuir Probe in a Flowing Plasma,

Corporate Author : VICTORIA UNIV (BRITISH COLUMBIA) DEPT OF PHYSICS

Personal Author(s) : Clements,R. M. ; Kerr,R. D. ; Offenberger,A. A. ; Smy,P. R.

Report Date : 1972

Pagination or Media Count : 2

Abstract : The transition between diffusive (saturated-current) and sheath-convection behavior of the current to a negatively biased Langmuir probe in a plasma jet has been studied experimentally by varying the electron density over a wide range. The measurements verify for the first time the expected change in the dependence of current on voltage. However, this change occurs at higher electron densities than expected, and, when saturated-current behaviour is finally obtained, these currents are significantly lower than their calculated values and, surprisingly, remain close to the sheath-convection currents calculated for moderate voltages. (Author)

Descriptors :   (*PLASMA JETS, *LANGMUIR PROBES), ELECTRON DENSITY, PLASMA SHEATHS, HYDRODYNAMICS, CANADA

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE