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Title: Low voltage drop, cross-field, gas switch and method of operation

Abstract

A gas switch includes an anode and a cathode spaced apart from the anode, wherein the cathode includes a conduction surface. The gas switch also includes a plurality of magnets arranged to generate a magnetic field that defines an annular path over a portion of the conduction surface at a radial distance from a switch axis, and a control grid positioned between the anode and the cathode. In operation, the control grid is arranged to establish a conducting plasma between the anode and the cathode, wherein, in the presence of the conducting plasma, a voltage drop between the anode and the cathode is less than 150 volts, and wherein the conducting plasma forms a cathode spot that circles the annular path.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
General Electric Company, Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568183
Patent Number(s):
10,256,067
Application Number:
15/860,225
Assignee:
General Electric Company (Schenectady, NY)
DOE Contract Number:  
AR0000298
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/02/2018
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 42 ENGINEERING

Citation Formats

Sommerer, Timothy John, Smith, David John, Michael, Joseph Darryl, Aceto, Steven Charles, Marquard, Kirk Ernest, Trotter, Jason Frederick, Lawler, James E., and Hitchon, William Nicholas. Low voltage drop, cross-field, gas switch and method of operation. United States: N. p., 2019. Web.
Sommerer, Timothy John, Smith, David John, Michael, Joseph Darryl, Aceto, Steven Charles, Marquard, Kirk Ernest, Trotter, Jason Frederick, Lawler, James E., & Hitchon, William Nicholas. Low voltage drop, cross-field, gas switch and method of operation. United States.
Sommerer, Timothy John, Smith, David John, Michael, Joseph Darryl, Aceto, Steven Charles, Marquard, Kirk Ernest, Trotter, Jason Frederick, Lawler, James E., and Hitchon, William Nicholas. Tue . "Low voltage drop, cross-field, gas switch and method of operation". United States. https://www.osti.gov/servlets/purl/1568183.
@article{osti_1568183,
title = {Low voltage drop, cross-field, gas switch and method of operation},
author = {Sommerer, Timothy John and Smith, David John and Michael, Joseph Darryl and Aceto, Steven Charles and Marquard, Kirk Ernest and Trotter, Jason Frederick and Lawler, James E. and Hitchon, William Nicholas},
abstractNote = {A gas switch includes an anode and a cathode spaced apart from the anode, wherein the cathode includes a conduction surface. The gas switch also includes a plurality of magnets arranged to generate a magnetic field that defines an annular path over a portion of the conduction surface at a radial distance from a switch axis, and a control grid positioned between the anode and the cathode. In operation, the control grid is arranged to establish a conducting plasma between the anode and the cathode, wherein, in the presence of the conducting plasma, a voltage drop between the anode and the cathode is less than 150 volts, and wherein the conducting plasma forms a cathode spot that circles the annular path.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}

Patent:

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Works referenced in this record:

Plasma switch with chrome, perturbated cold cathode
patent, May 1991


Modulator switch with low voltage control
patent, June 1986


Controllable gas-discharge device
patent, November 2010


Planar crossed-field plasma switch and method
patent, October 1998


Plasma switch with hollow, thermionic cathode
patent, December 1991


Switching apparatus
patent, May 1997


Multi-gap high impedance plasma opening switch
patent, October 1996


Method and apparatus for plasma generation
patent, April 2014


High voltage crossed-field plasma switch
patent, July 1994


Direct current high-pressure glow discharges
patent, August 2002


Hollow cathode plasma switch with magnetic field
patent, July 1992


Compact high voltage power supply
patent, April 1991