期刊
JOURNAL OF APPLIED PHYSICS
卷 95, 期 5, 页码 2900-2905出版社
AMER INST PHYSICS
DOI: 10.1063/1.1646452
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Resonant absorption diagnostic has been used to estimate densities of neutral and ionic titanium, both in ground and metastable states, in a rf coil amplified magnetron sputtering process. The conventional optical source dc supply has been replaced by a high voltage pulsed power supply to allow absorption experiments onto ionic and neutral species, in a broad range of discharge conditions (500 W are applied onto the magnetron cathode and 0-500 W on the rf coil, for a 30 mTorr argon pressure). The obtained densities are used to compare the magnetron and the amplified discharges. The total ionization degree of the metallic vapor is found to increase from similar to3% in the magnetron regime to similar to24% in the amplified magnetron discharge. The Ti (a(5)F) neutral metastable density is found to be partially enhanced when the rf coil is power supplied. (C) 2004 American Institute of Physics.
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