The selective excitation of the atomic and ionic spectral lines in a noble gas high power pulsed hollow cathode discharge

The purpose of this work is to investigate the selective excitation of some spectral lines emitted by noble gas atoms and ions and by sputtered metal ions in a high power pulsed hollow cathode discharged. The results obtained by time-integrated spectroscopy and by time-resolved investigation of the some atomic and ionic spectral lines on pulsed discharges in He - Kr mixture are analysed. The dominant role of the second order collisions induced by He 2 3 S1 and He 2 1 S0 metastable atoms (excitation energy transfer, asymmetrical charge transfer and Penning ionization and excitation), correlated with the electron temperature changed because of the variation of the He : Kr partial pressure ratio are experimentally studied. The gas and electric conditions for optimum selective excitation of certain spectral lines are established. (Author)