作者: C. E. Wickersham , J. E. Poole , J. S. Fan , L. Zhu
DOI: 10.1116/1.1403718
关键词: Analytical chemistry 、 Inclusion (mineral) 、 Charge coupled device camera 、 Aluminum oxide 、 Sputtering 、 Atomic physics 、 Molten metal 、 Electric arc 、 Doping 、 Aluminium 、 Materials science
摘要: Molten metal macroparticles emitted from the surface of aluminum sputtering targets during arcing events is an important source particulate contamination in sputtering. We used high-speed video analysis purposefully doped with oxide inclusions to determine velocity, trajectory, and relative size macroparticles. The results these analyses show that molten droplets are target velocities ranging 5 over 500 m/s. Ejection angles for observed were concentrated at around 30° plane. also found only certain generated detectable macroparticle emission (∼18% arc events). Macroparticle velocity did not appear be related. An estimate temperature based upon sensitivity charge coupled device camera lack cooling yields b...