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The angular distribution of the different cathode materials and gaseous ion flow from vacuum arc plasma is investigated. A metal-vapor-vacuum-arc-type ion source and a time-of-flight mass spectrometer were used. The experiments were performed using a range of different cathode materials, including C, Al, Zn, Cu, Ti, Co, Cr, W, Pb, , ...
Expanding characteristics of the plasma generated from pulse vacuum arcs of lead and copper cathode were investigated using a time of flight method and the Langmuir probe method. The measurements were made for the plasma expanding in the radial direction and expanding in the axial direction through the anode meshes. The time dependent charge state distributions and the direct velocities were determined...
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