Measurements with cylindrical Langmuir probes in a supersonic equilibrium plasma

Journal Article · Tue Jun 01 04:00:00 EDT 1982 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.331274· OSTI ID:5270395

Rosenbaum, M; Louis, J F

Experimental results are presented from negatively-biased cylindrical Langmuir probes located in a magnetohydrodynamic (MHD) generator with the flow supersonic and the plasma both in equilibrium and uniform. Voltage-current characteristics were obtained over a wide range of bias voltages, up to the arcing limit, and these showed that the probes operate in the convection-sheath mode. Electron densities deduced from the probe measurements are in agreement with values obtained by other methods; the results confirm the applicability of the Langmuir probe as a diagnostic technique in flowing plasmas.

• Research Organization: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• DOE Contract Number: AC01-79ET15518
• OSTI ID: 5270395
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 53:6; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300104* -- MHD Generators-- Duct Engineering & Fluid Dynamics
BREAKDOWN
CONFIGURATION
CYLINDRICAL CONFIGURATION
DATA
DIRECT ENERGY CONVERTERS
ELECTRIC POTENTIAL
ELECTRIC PROBES
ELECTRICAL PROPERTIES
ELECTRON DENSITY
EQUILIBRIUM
EXPERIMENTAL DATA
FLUID FLOW
INFORMATION
LANGMUIR PROBE
MHD GENERATORS
NUMERICAL DATA
PHYSICAL PROPERTIES
PLASMA
PLASMA DIAGNOSTICS
PROBES
SUPERSONIC FLOW