Electron temperature and density measurements in a low pressure plasma with toroidal field
Abstract
Double probe measurement of electron temperature and
density have been made in hydrogen and helium afterglows in the,
pressure range from 1.0 to 60 microns Hg. in the presence of a
toroidal magnetic field. Criteria for proper probe operation in
the magnetic field have been proposed and followed closely in the
case of the measurements in helium.
The electron density and temperature decay rates have been
determined in both hydrogen and helium. The most outstanding
feature of these was the anomalously fast cooling observed in
the early afterglow.
Electron densities have also been measured in an argon plasma
under conditions employed in the plasma betatron experiment.