Metastable CF and CF2 molecules in CF4 inductively-coupled plasmas
The radicals CF and CF2, which are important intermediates in fluorocarbon plasma chemistry, both have low-lying metastable levels ( 4CF at 3.54 eV and 3CF2 at 2.46 eV). Recent calculations (Rozum et al 2006 J. Phys. Chem. Ref. Data in press) indicate that electron-impact excitation of the ground-state radicals into these states could be fast. A recent study of inductively-coupled plasmas (ICP) in low-pressure CF4 (Booth et al 2005 Plasma Sources Sci. Technol. 14 273) indicated the presence of...[Show more]
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