Journal
PLASMA PROCESSES AND POLYMERS
Volume 6, Issue -, Pages S326-S330Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200930801
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The pressure acts on the sputtered species resulting in their thermalization. Space-resolved velocity distributions of titanium atoms sputtered in a direct-current magnetron discharge were investigated using the tunable diode-laser induced fluorescence technique (TD-LIF). The titanium 3d(2)4S(2) - 3d(2)((3)F)4s4p((1)P(0)) transition centred at lambda(0) = 398.289 nm was used to excite neutral Ti atoms and to measure their velocity distribution profile through the TD-LIF signal measured at lambda(TD-LIF) = 736.31 nm. Two groups of metallic particles, namely energetic and thermalized atoms, could be clearly distinguished and the corresponding flux distributions along the laser beam direction were deduced. The paper discusses the relative importance of the energetic atoms versus the discharge pressure especially in the vicinity of the target.
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