Accession Number : AD0712189

Title :   EARLY FREE-FALL AFTERGLOW OF A CYLINDRICAL MERCURY VAPOR PLASMA,

Corporate Author : TRENT UNIV PETERBOROUGH (ONTARIO) DEPT OF PHYSICS

Personal Author(s) : Gregory,B. C.

Report Date : 19 DEC 1969

Pagination or Media Count : 13

Abstract : The free-fall theory for the decay of average electron density and electron temperature in a mercury vapor discharge afterglow presented recently in a letter (Gregory) is improved by the addition of a presure term for the ions in the second moment equation. The neglect of charge-transfer collisions is justified. The development of the theory is reviewed in detail and a complete series of comparison curves for the measured and calculated electron density decay is presented for four tubes of different diameter. (Author)

Descriptors :   (*PLASMA MEDIUM, *AFTERGLOWS), ELECTRON DENSITY, MERCURY, IONIZATION, PRESSURE, ELECTRIC MOMENTS, ELECTRIC DISCHARGES, TEMPERATURE

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE