TY - JOUR AB - With respect to the investigation of low pressure filament-assisted chemical vapor deposition processes for diamond formation, absolute concentrations of atomic hydrogen were determined by two-photon laserinduced fluorescence in the vicinity of a heated filament in an environment containing H2 or mixtures of H2 and CH4. Radial H concentration profiles were obtained for different pressures and filament temperatures, diameters, and materials. The influence of the addition of various amounts of methane on the H atom concentrations was examined. DA - 1990 LA - eng IS - 33 M2 - 4993 PY - 1990 SP - 4993-4999 T2 - Applied Optics TI - Two-photon excited LIF determination of H-atom concentrations near a heated filament in a low pressure H2 environment UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-15111 Y2 - 2024-11-22T02:56:50 ER -