Accession Number : AD0677443

Title :   TRANSITION FROM FREE TO AMBIPOLAR DIFFUSION IN AN ELECTRODELESS DISCHARGE.

Descriptive Note : Research note,

Corporate Author : CONVAIR SCIENTIFIC RESEARCH LAB SAN DIEGO CALIF

Personal Author(s) : Eckert,Hans U.

Report Date : MAR 1961

Pagination or Media Count : 14

Abstract : An approximate relationship for the effective diffusion coefficient in the transition region between free and ambipolar diffusion due to Allis and Rose is incorporated into the previously derived characteristic equation for a steady state, inductive radiofrequency discharge. The resultant relationship is evaluated for hydrogen. It furnishes equilibrium values for the induced electric field at the tube wall and substantiates a previous assumption that ambipolar diffusion is established when the skin depth becomes of the order of the tube radius. A plot of electron density against the applied magnetic field reveals that the transition zone is unstable. (Author)

Descriptors :   (*ELECTRIC DISCHARGES, RADIOFREQUENCY), DIFFUSION, HYDROGEN, ELECTRIC FIELDS, ELECTRON DENSITY, MAGNETIC FIELDS

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE