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82results about How to "Increase the launch area" patented technology

High-current multi-channel metal cathode

The invention discloses a high-current multi-channel metal hollow cathode, which comprises a cathode tube, multiple metal emitters and an air circuit interface, wherein the cathode tube is a thin refractory metal tube, the multiple refractory metal emitters are arranged at one end of the cathode tube in parallel, the surfaces between the metal emitters and between the metal emitters and the inner wall of the cathode tube are tangent and the other end of the cathode tube is hermetically welded with the air circuit interface. According to the high-current multi-channel metal cathode, multiple emission channels are formed by adopting multiple metal bars or tubes with low work functions and high electron emission ability, the emission area is increased under the condition of a finite size, the emission current capacity is improved, an external heater is not needed, a certain flow of gas working medium is introduced to the inside, certain high voltage is applied to the outside and electron current of 100-500A can be emitted through direct ignition; and the emission current density of unit area does not exceed 10A / cm<2>, thereby greatly reducing the surface temperatures of the emitters and the material ablation rate and prolonging the service life of the hollow cathode and a thruster.
Owner:SHANGHAI INST OF SPACE PROPULSION

Multi-beam high-order mold beam wave interaction structure based on cold cathode

The invention relates to the field of microwave, millimeter wave and terahertz frequency band electric vacuum devices, in particular to a multi-beam high-order mode beam wave interaction structure based on a cold cathode. The structure is used for solving the problem that a beam wave interaction structure in the prior art cannot effectively improve the output power and the output efficiency. The multi-beam high-order mold beam wave interaction structure comprises a high-frequency interaction structure, a cold cathode electron gun connected with one end of the high-frequency interaction structure in a sealed mode, and an output system connected with the other end of the high-frequency interaction structure in a sealed mode. The interior of the high-frequency interaction structure is vacuumand is divided into a plurality of interaction gaps by transverse metal partition plates and longitudinal metal partition plates. The interaction gaps are communicated through coupling gaps. Accordingto the invention, under the action of the metal partition plates, the generation of a basic mode is inhibited. The metal partition plates can run under a high-order mode, so that the interaction of multiple electron beams and the high-order mode is realized. The beam wave interaction area is increased, and the output power and the output efficiency are improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Flat plate display of suspension square cathode type high angle grid control structure and manufacturing process thereof

The invention particularly relates to a flat plate display of a suspension square cathode type high angle grid control structure and a manufacturing process thereof. The flat plate display comprises the following components: a sealed vacuum chamber consisting of a cathode glass panel, an anode glass panel and a glass frame; an anode drainage layer, an anode connection layer and an anode covering layer which are arranged on the anode glass panel, and a luminescent layer which is prepared on the anode drainage layer; and an isolator and a getter which are positioned between the anode glass panel and the cathode glass panel. The suspension square cathode type high angle grid control structure comprises a cathode glass panel, a cathode barrier layer, a cathode bottom layer, a cathode connection layer polar enhancement layer, a cathode translation layer, a cathode transition layer, a cathode sacrificial layer, a first blocking layer, a first grid drainage layer, a grid connection layer, a second blocking layer, a second grid drainage layer, a third blocking layer and a carbon nanotube. The flat plate display has the advantages of low cost, simple manufacturing process and stable and reliable manufacturing course.
Owner:ZHONGYUAN ENGINEERING COLLEGE

Method for generating transition metal positive ion beam and device for method

InactiveCN109413835AIncrease the launch areaAdjust beam intensityAcceleratorsEvaporationHigh pressure
The invention belongs to the technical fields of electric propulsion systems and ion accelerators of aerospace devices, in particular to a method for generating a transition metal positive ion beam and a device for the method; the method comprises the following steps that a leading-out voltage is applied to an interface between a working substance storage layer and a solid electrolyte membrane, wherein metal is converted into metal ions through a redox reaction; and then the metal ions enter the vacuum through field evaporation, and kinetic energy is obtained under the action of an acceleration voltage to form an ion beam. The device is mainly composed of the working substance storage layer, the solid electrolyte membrane, a heating system and a high-voltage power supply system. A needle point is arranged on the surface of the working substance storage layer, and the surface of the needle point is plated with the solid electrolyte membrane; and a leading-out electrode is a metal net which is made of the same material as the working substance storage layer. The method has the beneficial effects that the ion emission area is enlarged, the beam intensity is improved, the leading-out voltage is lowered, and independent adjustment of the ion beam current intensity and the energy can be realized through two sets of independent power sources.
Owner:YICHANG HOUHUANG VACUUM TECH

Multifunctional magnetic coupling driver and vacuum equipment thereby

The invention discloses a multifunctional magnetic coupling driver and vacuum equipment thereby, and belongs to the field of vacuum equipment. The multifunctional magnetic coupling driver comprises anexternal main pipe and a strong magnet clamping cover sheathed to the external main pipe, wherein the strong magnet clamping cover comprises an external sleeve and a bar-shaped permanent magnet; thebar-shaped permanent magnet and the external main pipe are arranged in the same direction; the bar-shaped permanent magnet comprises a first magnet and a second magnet, wherein the first magnet is fixedly arranged on the outer wall of the external main pipe; the second magnet is fixedly arranged on the inner wall of the external sleeve; and the magnetic pole of the first magnet and the magnetic pole of the second magnet are arranged in the same direction. By use of the technical scheme, the bar-shaped permanent magnet is divided into the first magnet and the second magnet, wherein the first magnet and the second magnet are arranged in the same direction and are independently positioned on the external main pipe and the external sleeve, the external sleeve can rotate to enable the axial positions of the first magnet and the second magnet to be staggered, and therefore, the emission area of a magnetic induction line is increased so as to increase the emission amount of the magnetic induction line.
Owner:安徽泰臻真空科技有限公司
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