Determination of electron density and electron collision frequency in a plasma by an rf nonimmersive probe

Journal Article · Sat Sep 01 04:00:00 EDT 1973 · J. Appl. Phys., v. 44, no. 9, pp. 3975-3979

DOI:https://doi.org/10.1063/1.1662882· OSTI ID:4357695

Basu, J; Maiti, J N

A method is presented for determining the electron density and electron collision frequency in a cylindrical plasma column by placing an rf coil coaxially around the plasma and measuring the coil impedance. Simplified expressions relating the impedance to plasma parameters are found to be valid under certain suitable conditions. The plasma of a hot-cathode low-pressure dc discharge in argon was studied by an rf coil probe. The dependence of electron collision frequency on electron velocity was taken into account. The values of the electron density and average collision frequency, as obtained from the rf probe under different discharge conditions, are in fairly good agreement with those given by a cylindrical Langmuir probe. (auth)

• Research Organization: Saha Inst. of Nuclear Physics, Calcutta
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-019851
• OSTI ID: 4357695
• Journal Information: J. Appl. Phys., v. 44, no. 9, pp. 3975-3979, Journal Name: J. Appl. Phys., v. 44, no. 9, pp. 3975-3979; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*MAGNETIC PROBES
*PLASMA DIAGNOSTICS-- MAGNETIC PROBES
ARGON
COLLISIONS
ELECTRIC DISCHARGES
ELECTRON DENSITY
N70200* --Physics--Controlled Thermonuclear Research-- Diagnostics
RADIOWAVE RADIATION