Electrode type glow discharge apparatus

Details Electrode type glow discharge apparatus Electrode type glow discharge apparatus

1975-03-03

1977-06-21

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

With movable electrode or shield

313 30, 313 32, 313217, 313346R, H01J 102, H01J 144, H01J 152, H01J 2122

Patent

active

040314243

ABSTRACT:
There is disclosed herein an electrode type glow discharge apparatus, such as that used for sputtering material from a cathode to provide a coating or the like on materials such as a substrate or substrates. Several exemplary embodiments are disclosed involving various combinations of constructural features including a flanged or spool type cathode, anode placement with respect thereto, provision of internal and/or external magnetic fields with field lines close to and substantially parallel with the barrel of the cathode, insulator placement, efficient cooling for anode and cathode, and the like. Furthermore, the assembly is constructed in a manner such that the same can be readily disassembled for enabling change of cathode materials and for cleaning cooling fluid passageways of the cathode and anode. Embodiments are described wherein at least a portion of the cathode may be in the form of a continuously moving member, such as a wire. The various constructural features enable apparatus to be provided which can create stable and uniform plasmas confined and controlled volume while operating at relatively low pressures with relatively low operating voltages.

REFERENCES:
patent: 2874319 (1959-02-01), Anton
patent: 2994007 (1961-07-01), Berghaus et al.
patent: 3117246 (1964-01-01), Berghaus et al.
patent: 3784860 (1974-01-01), Cocks et al.

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