A Cold Cathode Radiation Source Based on Helical Ribbon Electron Injection
A strip electron, cold cathode technology, applied in the fields of submillimeter wave and terahertz electric vacuum devices, microwaves, and millimeter waves, can solve the problems of current on the surface of the medium, reduce the voltage resistance of the device, and spark, and achieve increased Interaction area, stabilization and miniaturization, the effect of increasing the emission area
A strip electron, cold cathode technology, applied in the fields of submillimeter wave and terahertz electric vacuum devices, microwaves, and millimeter waves, can solve the problems of current on the surface of the medium, reduce the voltage resistance of the device, and spark, and achieve increased Interaction area, stabilization and miniaturization, the effect of increasing the emission area
CN107527779BActive Publication Date: 2019-06-07UNIV OF ELECTRONICS SCI & TECH OF CHINA
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0038] Such as Figure 1-5 As shown, this implementation case provides a kind of cold cathode radiation source based on spiral ribbon electron injection, which mainly includes spiral ribbon injection electron gun (by cathode block 1-1, cathode emission surface 1-2, anode block 2, electron gun packaging insulator 5), guiding magnetic field 3 (generated by electron gun magnetic field generator 3-1, high-frequency system magnetic field generator 3-2, collector pole magnetic field generator 3-3), periodic structure metal shell 8 and collector pole 13 and other components , the spiral ribbon electron injection cold cathode radiation source system is not filled with medium (it is a vacuum environment). The materials of the cathode emitting surface 1-2 of the electron g...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a cold cathode radiation source based on spiral ribbon electron injection, which relates to the technical field of microwave, millimeter wave, submillimeter wave and terahertz electric vacuum devices, and consists of a cathode block, a cathode emitting surface, an anode block and an electron gun package insulator The spiral ribbon electron injection cold cathode electron gun, periodic structure metal shell, collector, guiding magnetic field generator, the cathode emission surface is rectangular; the lower surface of the anode block is a slope inclined downward to the right, and the anode block is located on the upper right of the cathode block square; the metal shell with periodic structure is provided with electron injection channels that run through the left and right ends of the metal shell with periodic structure, and the middle part of the electron injection channel is provided with a high-frequency structure extending axially along the electron injection channel; the collector, electron injection channel, and cathode emitting surface are located on a straight line. The invention proposes a spiral ribbon-shaped electron injection cold-cathode electron gun with simple structure, long service life and excellent performance, which utilizes the interaction between the longitudinal velocity of the electron injection and the high-frequency field to hand over energy to realize electromagnetic radiation.
Description
technical field [0001] The invention relates to the technical field of microwave, millimeter wave, submillimeter wave and terahertz electric vacuum devices, in particular to a cold cathode radiation source based on spiral ribbon electron injection. Background technique [0002] Field electron emission is a form of electron emission that is completely different in nature from thermionic emission. Thermionic emission is based on raising the temperature of the object, giving additional energy to the electrons inside the object, so that some high-energy electrons can escape over the potential barrier on the surface of the object. The current density that thermionic emission can provide is no more than a few hundred A / cm 2 , and there is still a period of hysteresis; but even if the metal is heated to a high temperature where significant evaporation occurs, the number of electrons that can escape only accounts for a very small part of the number of free electrons in the metal, a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
07 Jun 2019
Publication
CN107527779B
- IPC
- H01J3/02
- CPC
- H01J3/021; H01J3/027
- Inventors
- 袁学松; 陈青云