Electric lamp and discharge devices – With gas or vapor – Negative or cathode glow device
Reexamination Certificate
2005-05-31
2005-05-31
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Negative or cathode glow device
C313S582000, C313S583000, C313S586000
Reexamination Certificate
active
06900592
ABSTRACT:
A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.
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Becker Kurt
Kunhardt Erich
McCarter & English LLP
Patel Vip
The Trustees of the Stevens Institute of Technology
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