Fl. Tabares et D. Tafalla, SPUTTERING OF METALLIC WALLS IN AR H-2 DIRECT-CURRENT GLOW-DISCHARGESAT ROOM-TEMPERATURE/, Journal of vacuum science & technology. A. Vacuum, surfaces, and films, 14(6), 1996, pp. 3087-3091
Citations number
28
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
Laser induced fluorescence of Cr atoms in their ground state have been
used to characterize metallic sputtering in de glow discharges (GDs)
of hydrogen/argon admixtures in a stainless steel chamber at room temp
erature. A strong decrease in the sputtering signal was observed upon
addition of H-2 to the pure Ar GD plasma, at constant pressure and tot
al current conditions, even at low H-2 concentrations in the admixture
. The plasma microscopic parameters have been determined from actinome
try and Langmuir probe data. The H implantation characteristics of the
studied plasmas were also determined by pump and release experiments.
According to all the experimental evidence, hydrogen implantation in
the metal surface is the main process responsible for the observed spu
ttering suppression. The results are compared to similar sputtering re
duction observations previously reported in other light contaminant/me
tal systems. (C) 1996 American Vacuum Society.