OPTOGALVANIC DIAGNOSTIC OF CONICAL BOTTOM HOLLOW-CATHODE DISCHARGE - ENHANCEMENT OF THE OPTOGALVANIC SIGNAL

We present an optogalvanic aspect of a new modification of Hollow Cath ode Discharge (HCD), i.e. conical bottom HCD. Earlier we found this mo dification enhancing the light emission properties of the conventional flat bottom HCD; a greater concentration of sputtered atoms was estab lished by using a level crossing method. This effect provoked us to in vestigate the conical bottom HCD as an optogalvanic detector of signal s, belonging to the sputtered atoms in the negative glow. The conical bottom HCD is found to be an effective optogalvanic detector due to th e structure of the radial distribution of the optogalvanic signal.