Apparatus for establishing and maintaining a stable discharge across a stream of flowing gas, particularly useful for high-power lasers
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United States of America Patent
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Mar 4, 1986
Grant Date -
N/A
app pub date -
Sep 30, 1982
filing date -
Sep 30, 1982
priority date (Note) -
Expired
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Abstract
Apparatus for establishing and maintaining a stable discharge across a stream of flowing gas, particularly useful for high-power lasers, comprises working electrodes disposed on opposite sides of the gas flow channel, and starting electrodes adjacent to the upstream working electrodes. Each working electrode includes a ballast impedance and is connected between a high-voltage source and a point of fixed reference potential. Each starting electrode includes a substantially larger ballast impedance and is connected to the point of fixed reference potential such that each starting electrode is effective to bring the point of fixed reference potential to the upstream working electrode to start the discharge, and to draw little current after the discharge has been started.
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