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5828176 |
Planar crossed-field plasma switch and method
A cold-cathode, crossed field switch has a magnet system which generates a magnetic field that is radially-oriented about a switch axis and a planar electrode system which generates an...
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5589726 |
Arc lamp with external magnetic means
The present invention provides an arc lamp for producing a high intensity point source of light by magnetically compressing the light emitting element of the arc lamp. Arc lamp point light source...
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5568053 |
Ionization gauge having a non-time varying magnetic field generator of separated opposed magnets
A cold cathode ionization gauge includes a first and second electrode spaced apart and insulated from one another and having a common axis. A magnetic field generator surrounds the gauge and...
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5468363 |
Magnetic-cusp, cathodic-arc source
A magnetic-cusp for a cathodic-arc source wherein the arc is confined to the desired cathode surface, provides a current path for electrons from the cathode to the anode, and utilizes electric and...
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5461282 |
Advanced center post electron gun
An advanced center post (ACP) gun is provided which is capable of producing either a large orbit or small orbit electron beam. The gun comprises an annular shaped cathode, a control electrode...
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5282944 |
Ion source based on the cathodic arc
A cylindrically symmetric arc source to produce a ring of ions which leave the surface of the arc target radially and are reflected by electrostatic fields present in the source to a point of use,...
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5279723 |
Filtered cathodic arc source
A continuous, cathodic arc ion source coupled to a macro-particle filter capable of separation or elimination of macro-particles from the ion flux produced by cathodic arc discharge. The ion source...
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5048068 |
Magnetically operated pulser
A diode pulser is described which comprises a diode and an inductor connected in series, the impedance of the diode being controllable to suddenly increase the impedance to produce a high voltage...
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4925306 |
Ion bombardment furnace for atomic spectroscopy
A magnetron glow discharge plasma device is utilized as a furnace for vaporization, atomization and excitation of analytical solution samples of trace elements for atomic emission spectroscopy. The...
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4912738 |
Magnetically energized pulser
A diode pulser is described which comprises a diode and an inductor connected in series, the impedance of the diode being controllable to suddenly increase the impedance to produce a high voltage...
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4896073 |
Discharge tubes
A discharge tube arrangement, for example, a thyratron, in accordance with the invention has a first electrode arranged co-axially about a second electrode. Thus, in a thyratron, the anode may...
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4835438 |
Source of spin polarized electrons using an emissive micropoint cathode
Spin polarized electron source using an emissive micropoint cathode. At least one portion of each micropoint, including the top of the latter, is ferromagnetic, so that the electrons emitted by the...
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4833363 |
Ignitron with arc-centering magnetic field
An ignitron device is provided in which a permanent annular magnet at least partly surrounds the region between the ignitron anode and the surface of a mercury pool connected to the cathode...
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4812715 |
Current-level triggered plasma-opening switch
An opening switch for very high power electrical pulses uses a slow magnetic field to confine a plasma across a gap between two electrodes. The plasma conducts the electric pulse across the gap...
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4727298 |
Triggered plasma opening switch
A triggerable opening switch for a very high voltage and current pulse includes a transmission line extending from a source to a load and having an intermediate switch section including a plasma...
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4604752 |
Magnetic stabilization of high power glow discharges
The invention provides a novel means of stabilizing a glow discharge device against electrothermal instabilities and electrode induced instabilities comprising imposing a magnetic field on the...
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4600489 |
Method and apparatus for evaporation arc stabilization for non-permeable targets utilizing permeable stop ring
Apparatus and method for evaporation arc stabilization including a target having a surface of material of non-permeable material to be evaporated; circuitry for establishing an arc on the target...
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4547693 |
Re-entrant cathode support
An electron tube having a cathode and an anode with the anode subtantially surrounding the cathode and providing an electron-interaction space therebetween for providing a magnetic field having a...
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4501990 |
Electron tube, especially transmitting tube, with a device for eliminating interfering retarding-field effects
Electron tube assemble having coaxial electrodes and grids, including a tube with given electrode trajectories and oscillation period, and interfering retarding-field effect elimination means...
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4091310 |
Method and apparatus for on-switching in a crossed-field switch device against high voltage
An auxiliary magnetic field coil is associated with the interelectrode space of a crossed-field switch device for ignition of the crossed-field switch device when high voltage is applied across the...
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4071801 |
Crossed-field switch device and method for off-switching
For off-switching, the magnetic field in a crossed-field switch device is modified by a localized auxiliary field to terminate the previously continuous closed electron path in the interelectrode...
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3984725 |
Permanent magnet structure for crossed-field tubes
A permanent magnet structure particularly beneficial for generating the interaction field in coaxial, crossed field electron tubes is designed such that the normal iron flux return path is not...
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3949260 |
Continuous ionization injector for low pressure gas discharge device
Plasma chamber maintained ionized by thin wire discharge continuously supplies ionized plasma into the interelectrode space of a low pressure gas discharge device such as a crossed-field switch...
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3947342 |
Method of forming a composite electrode
Composite electrodes for a crossed-field switch device is formed by positioning a refractory metal structure substantially at the location of its first electrode, sputtering metal from the...
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3906270 |
Bipolar crossed-field switch tube with uniform magnetic field
Crossed-field switch tube has two electrodes to define an annular interelectrode gap. An annular magnetic field is produced in the gap with the field uniform along the length of the gap. Circuit...
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3890520 |
Continuous electron injector for crossed-field switch tubes
Continuously energized field emission device injects electrons into the interelectrode space of a crossed-field switch tube to eliminate the dependence upon statistical electrons for initiation of...
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3881127 |
Bucking samarium cobalt magnets for crossed field devices
A pair of bucking magnets in conjunction with a field-producing magnet ine the annular cathode of a crossed-field device. The bucking magnets may also be inside the cathode on both sides of the...
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3873871 |
SWITCH FIELD COILS FOR CROSSED-FIELD INTERRUPTER
The arrangement of the main windings and off-switching windings for the magnetic field of a crossed-field switching device permits a large diameter metal cathode inside of the coils.
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3855498 |
CENTER-POLE MAGNETIC CIRCUIT
A field-producing permanent magnet fitting within the annular cathode of a rossed-field device, such as the magnetron. The magnet is an annular device having an inner cylinder of high-permeability...
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3843904 |
MAGNETIC FIELD GEOMETRY FOR CROSSED-FIELD DEVICES
A method of and means for generating a magnetic field in the interaction a of a cross-field device wherein the permanent magnet is positioned outside of the vacuum of the device is provided....
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3769537 |
BAFFLE FOR PERFORATED ELECTRODE IN A CROSSED-FIELD SWITCH DEVICE
In the nonconducting state, breakdown between concentric electrodes is determined by the Paschen law. If the inner electrode which defines the interelectrode space is perforated, ionization can...
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3716750 |
MAGNETRONS
In a magnetron device of the class comprising a magnetron tube, permanent magnets on radially opposite sides of the magnetron tube yoke means for applying a magnetic field across the magnetron...
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3641384 |
SWITCHING DEVICE
The switching device has three spaced electrodes with a gas-filled annular space therebetween. When an axial magnetic field above a certain value is applied to the gas-filled space, and after...
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3610996 |
HIGH VACUUM ELECTRON TUBE WITH MAGNETICALLY ISOLATED CONTROL ELECTRODE
In a high vacuum electron control tube, a cathode comprised of a plurality of spaced parallel cathode wires or filaments arranged upon a generally cylindrical surface parallel to the cylinder axis...
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3604977 |
A CROSS FIELD SWITCHING DEVICE WITH A SLOTTED ELECTRODE
The switching device has an anode and a cathode with a gas-filled annular space therebetween. When an axial magnetic field above a critical value is applied to the gas-filled space, and after...
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3582710 |
ULTRAHIGH VACUUM MAGNETRON IONIZATION GAUGE WITH FERROMAGNETIC ELECTRODES
A magnetron ionization gauge having the capability of measuring ultrahigh vacuum of the order of 2 × 10 -16 torr with high sensitivity and conversion constant is formed with a hollow cylindrical...
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3579034 |
COMPRESSED GAS SYSTEM FOR ARC EXTINCTION
A capacitor bank protection system having series-connected spark gaps fired responsive to the firing of a precision spark gap connected in parallel with one of the series gaps. Each pair of spark...
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3558960 |
SWITCHING DEVICE
The switching device has an anode and a cathode with a gas-filled space therebetween. Conduction causes ion implantation into the cathode, sputtering and adsorption pumping, with consequent...
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3551735 |
CROSSED-FIELD DISCHARGE DEVICES AND OSCILLATORS AND AMPLIFIERS INCORPORATING THE SAME
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3510712 |
ELECTRON ORBITING GETTER VACUUM PUMP EMPLOYING A TIME VARYING MAGNETIC FIELD
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3505554 |
IONIZATION PRESSURE GAUGE
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3459994 |
CROSSED-FIELD DISCHARGE DEVICE AND IMPROVED MAGNETIC POLE STRUCTURES THEREFOR
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3458753 |
CROSSED-FIELD DISCHARGE DEVICES AND COUPLERS THEREFOR AND OSCILLATORS AND AMPLIFIERS INCORPORATING THE SAME
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3454809 |
CIRCULAR ELECTRON MULTIPLIER AND PERMEABLE ANODE
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3453469 |
MULTI-LEVEL VACUUM PUMPING SYSTEM FOR PLASMA CONTAINMENT DEVICE
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3444429 |
ANODE STRUCTURE FOR MICROWAVE FREQUENCY OSCILLATORS
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3441756 |
ELECTRICAL DEVICES
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3416021 |
Arc apparatus employing three dimensional arc motion and dynamic balancing
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3405301 |
Apparatus for producing quiescent plasma
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3403277 |
Downstream damped heat loss reducing electric arc gas heaters for wind tunnels
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