Towards a reduced chemistry module of a He–Ar–Cu hollow cathode discharge

Hollow Cathode Discharge Initiation and Fast Starting Cathode

Conditioning of the insert inside a hollow cathode is believed to be important to ensure reliable discharge initiation and subsequent cathode operation. The desorption of contaminates is reported from hollow cathodes as a function of heater power to quantify cathode conditioning characteristics and identify factors that might prevent the fast initiation of a discharge. In addition to conditioni...

Pressure effect on a tandem hollow cathode discharge in argon

-BΣu band spectra in a hollow-cathode glow discharge

An excitation-emission model for the H2 IΠ +/− g −BΣu transition has been developed based on the coronal equilibrium. Within the framework of the adiabatic theory, the vibronic transition probability is calculated instead of the Franck-Condon factor. The ro-vibrational temperatures are evaluated through the experiment carried out in a low-density hollow-cathode plasma. The evaluated temperature...

Operation Modes of Hollow Cathode Arcs with Reduced Gas Flow

In 1971 the first research work on hollow cathode arcs (abbreviated HCA) started at Giessen University. Emphasis has been put on the operation of this hollow cathode arc for the ion beam neutralization of the electric propulsion unit RIT 10. In this application the HCA works as an electron source delivering electrons for main discharge starting and beam neutralization. But beside this, diagnost...

Spectral-Interferometry Measurements of Copper Atom Concentration in a Segmented Hollow Cathode Discharge

Concentration in a Segmented Hollow Cathode Discharge L. Szalai, M. Ulbel a, T. Neger a, G. Pretzler a, Z. D o n k ó , K. Rózsa, and R. C. T o b i n b Research Institute for Solid State Physics of the Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 49, Hungary a Institut für Experimentalphysik, Technische Universität Graz, Petersgasse 16, A-8010 Graz, Austria b Department of Physics, M...