Decreasing the pressure in the hollow cathode discharge, simultaneously ensuring room for the expanding negative glow, allows the discharge to transit, from the hollow cathode type into a high voltage discharge where the cathode cavity is filled with the cathode glow. Such an arrangement seems to be very effective for endoergic charge transfer excitation as it was observed in a He-Cu system. Voltage-current characteristics of the transition region are also presented.
ASJC Scopus subject areas
- Physics and Astronomy(all)