Study of Vaporization and Excitation Processes in a Hollow Cathode Discharge

Low pressure plasma spectroscopy ? Spectrochemical analysis, technology process investigation and fundamental spectroscopic data

“…The values obtained here are compared with those published by Wiese [20,22] in Table 3. For most of the lines a good Table 3 Comparison of Ar I transition probabilities obtained in HCD (referring to 696.5 nm line transition probability value [22]) with NIST data A in 10 s\ in nm HCD, this study Wiese et al 1980 [22] Wiese 1991 [20] accuracy is given in brackets in % 695.5 reference line 6.7 (25) 6.39 (5) (10) agreement between compared HCD data and NIST values has been obtained. Despite a strong controversy concerning LTE problems, the present initial results on the applicability of HCD to the determination of transition probabilities seem to be promising and encouraging for expansion.…”

“…Nevertheless for some other solids interelement interactions in glow discharges may be a severe problem. Such examples may be: -effects during measurements of rare earth elements in some matrices in HCD [9], -effects observed in dc and rf HCD for samples containing halides ( [10,11]). Quite often chemical reactions play a very important role in low pressure plasma.…”