Abstract:
An anode of an arc plasma generator and the arc plasma generator are disclosed. The plasma generator is a multi-stage gas admission type arc plasma generator, and the plasma generator includes a cathode and an anode. The anode comprises at least two portions (201, 203), wherein any two adjacent portions of the anode are connected electrically with one another.
Abstract:
To simultaneously suppress halation and discharging current flowing in the unlikely event of discharge, and easily perform potential regulating for a spacer, an image displaying apparatus comprises: a rear plate having electron-emitting devices arranged in matrix; a face plate having a substrate, light-emitting members arranged in matrix on the substrate, metal backs each covering at least one member and mutually arranged in matrix at gaps, ribs having first striped portions respectively positioned among the members and protruding toward the rear plate, and a resistive wiring including a resistor between the substrate and the ribs and electrically connecting the metal backs, and positioned oppositely to the rear plate; and a spacer positioned between the rear plate and the ribs to mutually support the rear and face plates, wherein the rib has a spacer connection wiring abutting against the spacer, and the spacer connection wiring is electrically connected to the resistive wiring.
Abstract:
An apparatus and/or method for controlling an ion beam may be provided, and/or a method for preparing an extraction electrode for the same may be provided. In the apparatus, a plurality of extraction electrodes may be disposed in a path of an ion beam. At least one extraction electrode may include a plurality of sub-grids.
Abstract:
A field emission electron gun capable of generating a highly stabilized electron beam, comprises a cathode tip for emitting electrons, an anode for attracting and accelerating the electrons, and means for heating the anode. A surface layer of the anode, which is to be bombarded by the electrons, consists essentially of getter material such as Zr-Al alloy. The anode heating means serves for heating the surface layer, so as to remove the absorbed gas molecules and to elevate the gettering effect of the getter material, whereby the absorbed gas molecules in the anode are hardly released therefrom, even if the anode surface is bombarded by the electrons. Therefore, the number of ions impinging on the cathode tip is remarkably reduced, and a stable electron beam can be obtained from the cathode tip.
Abstract:
An apparatus for generating electron radiation comprises: an elongated, wire-shaped hot cathode to emit electron radiation having an elongated, line-shaped cross section perpendicular to a direction of propagation of the electron radiation; a cathode electrode; an anode electrode with an opening through which the electron radiation emitted from the hot cathode can pass, wherein a voltage applied between the cathode electrode and the anode electrode accelerates electrons emitted from the hot cathode; and a deflecting unit to deflect the electron radiation downstream of the opening of the anode electrode, wherein a cross section of the electron radiation perpendicular to the direction of propagation is changed by the deflecting unit to decease a longitudinal extent of the electron radiation and to increase a transverse extent of the electron radiation such that longitudinal and transverse extents of the electron radiation perpendicular to the direction of propagation are about the same size.
Abstract:
One or more embodiments relate generally to the field of photoelectron spin and, more specifically, to a method and system for creating a controllable spin-polarized electron source. One preferred embodiment of the invention generally comprises: method for creating a controllable spin-polarized electron source comprising the following steps: providing one or more materials, the one or more materials having at least one surface and a material layer adjacent to said surface, wherein said surface comprises highly spin-polarized surface electrons, wherein the direction and spin of the surface electrons are locked together; providing at least one incident light capable of stimulating photoemission of said surface electrons; wherein the photon polarization of said incident light is tunable; and inducing photoemission of the surface electron states.
Abstract:
An improved anode for a discharge tube is provided in which an anode member is positioned within an anode receiving envelope and wherein the anode is constructed of a thermal-expanding material such that during operation of the discharge tube the anode expands into intimate mechanical and thermal contact with the envelope.
Abstract:
A magnetically focused beam power tube having an anode provided with means for suppressing secondary emission, which means comprises Faraday cage-type cavity structures having magnetic shielding for providing substantially magnetic-free regions within the cavities.