CN103745900A - Sheet electron beam generation cathode for vacuum electronic device - Google Patents
Sheet electron beam generation cathode for vacuum electronic device Download PDFInfo
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- CN103745900A CN103745900A CN201410016252.3A CN201410016252A CN103745900A CN 103745900 A CN103745900 A CN 103745900A CN 201410016252 A CN201410016252 A CN 201410016252A CN 103745900 A CN103745900 A CN 103745900A
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- ribbon
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- clinohedral
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Abstract
The invention discloses a sheet electron beam generation cathode for a vacuum electronic device. The cathode comprises a conductor sheet, wherein the width, the thickness and the length from the front end to the rear end of the conductor sheet are proper, and meet the design requirements of the vacuum electronic device. When higher voltage is applied, an electric field at the front end of the conductor sheet is high in intensity, electrons are withdrawn from the conductor sheet, plasmas are generated at the front end of the conductor sheet when the applied voltage is further increased, and higher current is withdrawn from the plasmas by the high-intensity electric field to form sheet electron beams. When the current is higher, the current withdrawn from the plasmas flows forwards along a magnetic line of force, and an inclined surface body is impacted by the backwards-flowing current; from the point of energy, the potential is unchanged when the inclined surface body is impacted by the backwards-flowing current, so that energy loss is avoided. The sheet electron beam generation cathode for the vacuum electronic device has the characteristics of high efficiency and high current, and also has the advantages of low cost and easiness in machining and assembly.
Description
Technical field
The invention belongs to vacuum electron device technical field, more specifically say, relate to the negative electrode for generation of ribbon-like electron note in travelling wave tube, backward wave tube, backward wave oscillator, free-electron laser, orotron equal vacuum electronic device.
Background technology
Along with scientific and technological progress, the demand of vacuum electron device is trended towards to higher power and frequency, therefore can produce high-powerly, the ribbon-like electron note vacuum electron device of high-frequency output becomes study hotspot both domestic and external.
But the vacuum electron device of the application ribbon-like electron notes such as ribbon-like electron traveling wave, backward wave tube, backward wave oscillator, free-electron laser, orotron all faces a key issue, how to produce ribbon-like electron note.
Each research group has proposed multiple diverse ways both at home and abroad: 1) utilize flannelette explosive emission, then adopt gap anode, shearing electronic note, realizes ribbon-like electron note.2) utilize three-dimensional software directly to design two-element hot-cathode tube, directly transmitting produces ribbon-like electron note.But these two kinds of methods have shortcoming separately, then flannelette explosive emission is sheared and will be made diode emission effciency reduce with anode.And directly the two-element hot-cathode tube emission current of design is little, technique assembling difficulty, rate of finished products is low, and cost is high.
At on 04 04th, 2012, announce, application publication number is the negative electrode that CN102403179A, name have been announced a kind of rectangle cylindrical structure with certain curvature in being called " a kind of structure of high-power strip beam electron gun with rectangular section ", it need to arrange the focusing electrode of a square frame structure between negative electrode and anode, focusing electrode has two transverse directions on narrow/wide both sides, and the focussing plane respectively with certain inclination angle is spliced.Anode is the structure having with tapering hollow channel, and anode head sets firmly and anode-supported bucket inner bottom surface center; Rectangle cylinder negative electrode periphery coordinates with square frame-shaped focusing electrode bottom rectangle hollow square frame, negative electrode and focusing electrode are positioned at anode-supported cylinder, two planes of symmetry of focusing electrode and the two axis parallel with two planes of symmetry of anode overlaps, and has certain distance between focusing electrode and anode.This electron gun produces the complicated structure of ribbon-like electron note, is also not easy to processing and installs.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the negative electrode for generation of ribbon-like electron note in a kind of vacuum electronic device is provided, to improve the efficiency of transmitting, strengthen emission current, meanwhile, reduce structure complexity, fall processing and manufacturing cost.
For achieving the above object, in vacuum electronic device of the present invention, for generation of the negative electrode of ribbon-like electron note, it is characterized in that, comprising:
One conductor sheet, its width and thickness, front end are determined according to the requirement of concrete vacuum electron device to the length of rear end; Front end is corresponding with anode;
A control clinohedral of backflowing of being made by conductor, this clinohedral has two inclined-planes, all be connected with the rear end of conductor sheet, junction is to backflow to control the front end of clinohedral, an inclined-plane extends back, is inclined upwardly from junction, another inclined-plane extends back from junction, downward-sloping, the angle that inclined-plane tilts is adjusted according to actual conditions; The control clinohedral of backflowing is solid or hollow-core construction; The rear end of the control clinohedral of backflowing is power cathode link.
Goal of the invention of the present invention is achieved in that
In vacuum electronic device of the present invention, for generation of the negative electrode of ribbon-like electron note, comprise width and thickness and the front end conductor sheet that conforms with vacuum electron device designing requirement being of convenient length to rear end.When anode and cathode applies certain voltage, directly apply this conducting thin slice and realize the transmitting that ribbon-like electron is noted.When applying voltage when higher, conductor sheet front end electric field strength is large, and electronics is pulled out from conducting thin slice, when applying voltage and further increase again, conducting thin slice front end produces plasma, and highfield pulls out larger electric current from plasma, forms ribbon-like electron note.When from conductor sheet pull-out electric current, to set up in advance along the magnetic line of force of conductor sheet direction, emission current advances along the magnetic line of force.When electric current is larger, the electric current pulling out from plasma not only advances forward along the magnetic line of force, also there is part electric current to advance backward along the magnetic line of force, so increase by a clinohedral after conductor sheet, this clinohedral is conductor, solid or hollowly all can, mobile electric current will be beaten in this clinohedral backward, from energy point of view, to after-current, beat current potential in this clinohedral and do not change, so noenergy loss.
Compared with existing ribbon-like electron note generation technology, in the vacuum electronic device that the present invention proposes, for generation of the negative electrode of ribbon-like electron note, also have advantages of as follows:
1, high efficiency
The negative electrode for generation of ribbon-like electron note that the present invention proposes, directly launches banded electron beam, then by slot-shaped anode.In the situation that negative electrode is enough thin, ribbon-like electron note percent of pass can be up to 100%.And then above-mentioned flannelette explosive emission adopts gap anode, shearing electronic note, realizing the mode of ribbon-like electron note compares, flannelette explosive emission mode, because most of electronics is all beaten on anode, makes it only have a small amount of electronics by gap anode, so which efficiency is low.Secondly, when electric current is larger, have portions of electronics to flow backward along the magnetic line of force, now inclined-plane conductor will block mobile backward electronics, and the loss of backflowing of reduction, so improved the efficiency of whole negative electrode.
2, emission current is large
The negative electrode for generation of ribbon-like electron note that the present invention proposes directly pulls out electric current in highfield situation, and when electric field strength is enough strong, conductor sheet front end will form plasma, can launch the electric current up to hundred kilo-amperes.And the above-mentioned three-dimensional software design two-element hot-cathode tube that utilizes, the mode of launching banded electron beam, due to emission low (<50A/cm2), the surface of emission is less, cannot launch the electric current of kilo-ampere level at all.So the negative electrode for generation of ribbon-like electron note that the present invention proposes, has advantages of that emission current is large.
3, simple in structure, cost is low
The negative electrode for generation of ribbon-like electron note that the present invention proposes, the clinohedral of being backflowed by conductor sheet and inhibition forms, and in reality processing, conductor sheet and clinohedral can integratedly be processed, and have the advantage that processing cost is low.
4, assembling easily
The negative electrode for generation of ribbon-like electron note that the present invention proposes also has assembling and is easy to advantage.In reality processing and assembling process, backflow after controlling clinohedral and process a screw thread or sell as power cathode link, can direct convenience be linked into power supply.
Accompanying drawing explanation
Fig. 1 is the structural representation for generation of a kind of embodiment of negative electrode of ribbon-like electron note in vacuum electronic device of the present invention;
Fig. 2 is that in the device of vacuum electronic shown in Fig. 1, negative electrode and the inclined-plane anode for generation of ribbon-like electron note realized the schematic diagram that ribbon-like electron note produces;
Fig. 3 is that in the device of vacuum electronic shown in Fig. 1, negative electrode and the molybdenum net anode for generation of ribbon-like electron note realized the schematic diagram that ribbon-like electron note produces;
Fig. 4 is the negative electrode for generation of ribbon-like electron note in backward wave oscillator.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described, so that those skilled in the art understands the present invention better.Requiring particular attention is that, in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these are described in here and will be left in the basket.
Fig. 1 is the structural representation for generation of a kind of embodiment of negative electrode of ribbon-like electron note in vacuum electronic device of the present invention.
In the present embodiment, as shown in Figure 1, in vacuum electronic device of the present invention, for generation of the negative electrode of ribbon-like electron note, comprise conductor sheet 1 and the control clinohedral 2 of backflowing of being made by conductor.
The width of conductor sheet 1 and thickness, front end 101 are determined according to the requirement of concrete vacuum electron device to the length of rear end 102; Front end 101 with anode to corresponding.
The control clinohedral 2 of backflowing of being made by conductor has two inclined-planes, all be connected with the rear end 102 of conductor sheet 1, junction is to backflow to control the front end 201 of clinohedral, an inclined-plane extends back, is inclined upwardly from junction, another inclined-plane extends back from junction, downward-sloping, the angle that inclined-plane tilts is adjusted according to actual conditions; The control clinohedral 2 of backflowing can be solid, can be also hollow; There is power cathode link the rear end 202 of the control clinohedral of backflowing.
In the present embodiment, as shown in Figure 1, the camber line structure that front end 101 sections of conductor sheet 1 are projection, is so more conducive to the stable generation of ribbon-like electron note.
Fig. 2 is that in the device of vacuum electronic shown in Fig. 1, negative electrode and the inclined-plane anode for generation of ribbon-like electron note realized the schematic diagram that ribbon-like electron note produces.
In the present embodiment, Fig. 2 (a) is depicted as the location diagram for generation of the negative electrode and positive electrode of ribbon-like electron note, wherein, the wide of conductor sheet 1 is 15mm, and thick is 0.5mm, and long is 10mm, backflow and control the wide 15mm of being in inclined-plane of clinohedral 2, angle is 60 °, and height is 10mm, and both are connected and are formed for producing the negative electrode of ribbon-like electron note.In the present embodiment, as shown in Figure 2 (a) shows, anode 3 utilizes the gap with inclined-plane to form.
Emulation schematic diagram when Fig. 2 (b) produces for ribbon-like electron note.When anode and cathode applies voltage, conductor sheet 1 front end 101 pulls out ribbon-like electron note 4, enters anode 3 internal channels.The Realization of Simulation electric current 1kA, circulation efficiency 100%.
In specific implementation process, when the control clinohedral 2 of backflowing of the conductor sheet 1 of design suitable width and suitable slope is backflowed for controlling, when two inclined-planes of clinohedral 2 extend back, width progressively broadens, thereby backflowing of two ends, left and right also can be suppressed simultaneously.Negative electrode connects power cathode, when anode and cathode applies certain voltage, conductor sheet 1 thin slice front end electric field is concentrated, increase, thereby from conductor sheet 1 front end pull-out electron beam, the electron beam being drawn out transmits in magnetic field, and some electron beam flows in the other direction along the magnetic line of force, now designs suitable inclined-plane and will block this part electron beam that backflows.
Fig. 3 is that in the device of vacuum electronic shown in Fig. 1, negative electrode and the molybdenum net anode for generation of ribbon-like electron note realized the schematic diagram that ribbon-like electron note produces.
In the present embodiment, as shown in Figure 3, the wide of conductor sheet 1 is 20mm, and thick is 0.5mm, and long is 20mm, backflows that to control the inclined-plane of clinohedral 2 wide be 45 ° of angles, and height is 15mm, and wide is 30mm, and both are connected and are formed for producing the negative electrode that ribbon-like electron is noted.Anode 3 is that gap and molybdenum filament net form, and when anode and cathode applies voltage, the transmitting of ribbon-like electron note, sees through molybdenum filament net, enters anode 3 internal channels.
Fig. 4 is for generation of the cathode construction of ribbon-like electron note and the sectional view of the actual ribbon-like electron note producing in backward wave oscillator.
In the present embodiment, Fig. 4 (a) is depicted as the cathode junction composition for generation of ribbon-like electron note in backward wave oscillator.For generation of the negative electrode of ribbon-like electron note, adopting stainless steel one to process, is entity structure.Conductor sheet 1 is wide is 30mm, and thick is 0.5mm, and long is 20mm, backflow and control 45 ° of the angles on clinohedral 2 inclined-planes, height is 10mm, both formation negative electrodes that are connected, the M6 screw thread 5 of the rear end spreading 10mm of the control clinohedral 2 of backflowing, as power cathode link, is convenient to be connected with power supply.
Fig. 4 (b) is depicted as the sectional view of the ribbon-like electron note of actual generation.In the present embodiment, should realize 160kV for generation of the negative electrode of ribbon-like electron note, the ribbon-like electron note of 2kA, the wide 30mm of electron beam, thick 1mm as shown in Figure 4 (b), is greater than 80% by anode internal channel efficiency.
From above-mentioned concrete test, in the vacuum electronic device that the present invention proposes, for generation of the negative electrode of ribbon-like electron note, there is efficiency high, the feature that electric current is large.Have cost low, process and assemble is easy to advantage simultaneously.
Although above the illustrative embodiment of the present invention is described; so that those skilled in the art understand the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and definite the spirit and scope of the present invention in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (2)
1. a negative electrode of noting for generation of ribbon-like electron in vacuum electronic device, is characterized in that, comprising:
One conductor sheet, its width and thickness, front end are determined according to the requirement of concrete vacuum electron device to the length of rear end; Front end is corresponding with anode;
A control clinohedral of backflowing of being made by conductor, this clinohedral has two inclined-planes, all be connected with the rear end of thin slice, junction is to backflow to control the front end of clinohedral, an inclined-plane extends back, is inclined upwardly from junction, another inclined-plane extends back from junction, downward-sloping, the angle that inclined-plane tilts is adjusted according to actual conditions; Anti-current control clinohedral can be solid, can be also hollow; The rear end of the control clinohedral of backflowing is power cathode link.
2. the negative electrode for generation of ribbon-like electron note claimed in claim 1, is characterized in that, when two inclined-planes of described clinohedral extend back, width progressively broadens, thereby backflowing of two ends, left and right also can be suppressed simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410016252.3A CN103745900A (en) | 2014-01-14 | 2014-01-14 | Sheet electron beam generation cathode for vacuum electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410016252.3A CN103745900A (en) | 2014-01-14 | 2014-01-14 | Sheet electron beam generation cathode for vacuum electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098503A (en) * | 2016-07-18 | 2016-11-09 | 电子科技大学 | A kind of Graphene ribbon-like electron note field emission cold-cathode and production method thereof |
Citations (3)
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| CN201877391U (en) * | 2010-12-10 | 2011-06-22 | 安徽华东光电技术研究所 | Millimeter wave travelling wave tube electron gun structure |
| CN201893313U (en) * | 2010-09-21 | 2011-07-06 | 安徽华东光电技术研究所 | Positive pole control electron gun applied in millimeter-wave travelling wave tube |
| CN203733751U (en) * | 2014-01-14 | 2014-07-23 | 电子科技大学 | Cathode used for generating strip-shaped electronic beam in vacuum electronic device |
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2014
- 2014-01-14 CN CN201410016252.3A patent/CN103745900A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201893313U (en) * | 2010-09-21 | 2011-07-06 | 安徽华东光电技术研究所 | Positive pole control electron gun applied in millimeter-wave travelling wave tube |
| CN201877391U (en) * | 2010-12-10 | 2011-06-22 | 安徽华东光电技术研究所 | Millimeter wave travelling wave tube electron gun structure |
| CN203733751U (en) * | 2014-01-14 | 2014-07-23 | 电子科技大学 | Cathode used for generating strip-shaped electronic beam in vacuum electronic device |
Non-Patent Citations (1)
| Title |
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| WANG ZHANLIANG 等: "Producing High Current Sheet Electron Beam with Compact, Repetitive Tesla Generator", 《MICROWAVE AND MILLIMETER WAVE CIRCUITS AND SYSTEM TECHNOLOGY》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098503A (en) * | 2016-07-18 | 2016-11-09 | 电子科技大学 | A kind of Graphene ribbon-like electron note field emission cold-cathode and production method thereof |
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Application publication date: 20140423 |