ULTIMATE AND SECONDARY ELECTRON ENERGIES IN THE NEGATIVE GLOW OF A COLD- CATHODE DISCHARGE IN HELIUM

Journal Article · Tue Mar 01 04:00:00 EST 1960 · Journal of Applied Physics (U.S.)

DOI:https://doi.org/10.1063/1.1735620· OSTI ID:4201064

Anderson, J M

The "ultimate" electron density in the negative glow plasma of a cold- cathode discharge in helium at gas pressures 3-12 mm Hg was determined by simultaneous Langmuir probe and microwave transmission methods. A correlation is obtained at densities above approximately 4 x 10/sup 11/ /cm/sup 3/ when the influence of positive ion scattering of the electrons diffusing to the probe is considered, The ultimate electron temperature in the helium negative glow was measured by the metallic probe to be quite low, approximately 400 ction prod- K and the "secondary" electron temperature was found to be approximately 50,000 ction prod- K. These probe indications are substantiated by measurement of the microwave noise power radiated from the plasma which is found to correspond to an effective temperature varying from 300 to approximately 1000 ction prod- K. (auth)

• Research Organization: General Electric Research Lab., Schenectady, N.Y.
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-011215
• OSTI ID: 4201064
• Journal Information: Journal of Applied Physics (U.S.), Journal Name: Journal of Applied Physics (U.S.) Vol. Vol: 31; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CATHODES
DENSITY
DIFFUSION
ELECTRONS
ENERGY
GLOW DISCHARGES
HELIUM
IONS
LANGMUIR PROBE
LOW TEMPERATURE
MEASURED VALUES
MICROWAVES
PHYSICS
PLASMA
PRESSURE
SCATTERING
TEMPERATURE