CN106847652B - A kind of coaxial continuous wave Terahertz of gradual change tiltedly notes pipe - Google Patents
A kind of coaxial continuous wave Terahertz of gradual change tiltedly notes pipe Download PDFInfo
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- CN106847652B CN106847652B CN201611237369.XA CN201611237369A CN106847652B CN 106847652 B CN106847652 B CN 106847652B CN 201611237369 A CN201611237369 A CN 201611237369A CN 106847652 B CN106847652 B CN 106847652B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/24—Slow-wave structures, e.g. delay systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/06—Electron or ion guns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/10—Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2223/00—Details of transit-time tubes of the types covered by group H01J2225/00
- H01J2223/02—Electrodes; Magnetic control means; Screens
- H01J2223/06—Electron or ion guns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2223/00—Details of transit-time tubes of the types covered by group H01J2225/00
- H01J2223/02—Electrodes; Magnetic control means; Screens
- H01J2223/10—Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2223/00—Details of transit-time tubes of the types covered by group H01J2225/00
- H01J2223/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J2223/24—Slow-wave structures, e.g. delay systems
Abstract
The present invention relates to a kind of coaxial continuous wave Terahertzs of gradual change tiltedly to note pipe, this tiltedly notes the coaxial output waveguide inner cylinder of pipe and coaxial output waveguide outer barrel axial direction is arranged in parallel；Co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder are arranged in parallel and with respect to axial direction cant angle thetas；Co-axial high-frequency structure outer barrel is being provided with metal slow-wave structure, metal slow-wave structure and the co-axial high-frequency structure inner cylinder composition gradual change co-axial high-frequency structure being oppositely arranged on the surface of co-axial high-frequency structure inner cylinder；Co-axial high-frequency structure outer barrel is connect with coaxial output waveguide outer barrel, and co-axial high-frequency structure inner cylinder is connect with coaxial output waveguide inner cylinder；Electron beam generating device tilts transmission annular electron beam for generating, and the angle tilted between transmission annular electron beam and the inner surface of co-axial high-frequency structure inner cylinder is α.The oblique note pipe can not only effectively inhibit the excitation of Para-sinuous mode, and improve the power capacity and output power level of device, while designing and being realized with handling ease.
Description
Technical field
The invention belongs to continuous wave Terahertz vacuum electronic radiation source technical fields, and in particular to one kind being operated in continuous wave
State, can radiation frequency be more than 0.1 Terahertz, output power more than 1 watt terahertz wave band (Terahertz, Terahertz,
1THz=1012Hz) the coaxial continuous wave Terahertz of the gradual change of electromagnetic wave tiltedly notes pipe.
Background technology
Terahertz Technology has obtained great development in recent years, and the THz source with certain power output is Terahertz Technology
The basis of application.Mechanism of production based on terahertz emission source can be divided into three classes, and one kind is the terahertz based on semiconductor technology
The output power of hereby radiation source, such as quantum cascade laser, the Terahertz frequency range electromagnetic wave that such device generates is very low, and
It needs to work at low temperature；In addition a kind of is the terahertz emission source based on photonic propulsion principle, by the way that femtosecond laser to be incident on
Nonlinear optical crystal generates THz wave, and this kind of radiation source needs additional laser, and energy conversion efficiency is relatively low.Most
Latter class is the THz source based on vacuum electronics principle, such device can generate higher output power, therefore both at home and abroad
The research of equal Efforts To Develop Terahertz vacuum electron device, Russian Applied Physics research institute have carried out the reality of 1THz gyrotrons
Research is tested, the terahertz pulse signal that frequency is 1.03THz, output power is 1kW is produced, Japanese Fukui University is carried out
The experimental study of terahertz wave band continuous wave gyrotron.Xibei Nuclear Techn Inst surrounds overmoded surface-wave oscillator, in terahertz
Hereby wave has also carried out a large amount of research work in terms of generating theoretical, numerical simulation and experiment, and it is 0.14THz that experiment, which has obtained frequency,
THz wave output, measured power respectively reaches about 2.6MW and 5MW.The Cyclotron and surface wave developed at this stage shake
The exterior guiding magnetic field, in general swung needed for device is larger, and superconducting coil need to be used to generate high-intensity magnetic field and carried out about to the movement of electron beam
Beam causes developed Terahertz vacuum electron device external equipment very huge, is unfavorable for Terahertz vacuum electron device
Extensive use.
With the development of Terahertz Technology and micro-nano technology technology, an important development of Terahertz vacuum electron device
Direction is the development of the horizontal THz source of medium output power, can be used for the research fields such as medical imaging and detection.The type
The required electron-beam voltage of THz source is relatively low, electron beam density is smaller, the reduction with device operating voltages and electronics
The reduction of Shu Midu, required external constraint magnetic field can also be reached using the spiral winding of usually used permanent magnet or room temperature
It arrives, therefore the external equipment of entire THz source is simplified, this has very important significance for the functionization of device.State
It is inside and outside to be noted using low-voltage ribbon-like electron, carry out the development work of the terahertz wave band backward wave oscillator of rectangle slow-wave structure,
It is also immature to the research of ribbon-like electron note at this stage but due to the unstability of ribbon-like electron note, therefore use cylindrical hollow
Electronics forms preferably to be selected for one, but since device operating frequencies reach terahertz wave band, the cross section of high-frequency structure
Product becomes smaller, and the electric current of electron beam is caused to become smaller, while the power capacity of device reduces, and uses the co-axial high-frequency knot that mould is relatively high
Structure can improve the output power of device and the size of current of electron beam, but scheme control can be caused relatively difficult, especially
It is that angular Para-sinuous mode is very easy to be energized.
National inventing patent " a kind of radial structure continuous wave Terahertz oscillation that number of patent application is 2015107029166
Device ", invention proposition use axisymmetric radial slow-wave structure and axisymmetric Radial Electron Beam to generate frequency as 0.1 terahertz
The hereby above electromagnetic wave.
" high power coaxial configuration crosses the oscillation of mould surface wave to the national inventing patent that number of patent application is 2013104459943
Device and THz wave production method ", which proposes to use high voltage and strong exterior guiding magnetic field, and utilizes coaxial slow wave
Structure and axial transmission electron beam generate the great-power electromagnetic wave for the impulse form that frequency is 0.1 Terahertz or more.
National inventing patent " a kind of continuous wave Terahertz surface wave oscillation that number of patent application is 2015103543131
Device ", which proposes to use low-voltage and low externally-applied magnetic field, and utilizes coaxial slow wave structure and axial transmission electron beam
Generate the middle low power electromagnetic wave for the continuous wave form that frequency is 0.1 Terahertz or more.
In above-mentioned patent using greater than mould than co-axial high-frequency structure when so that Para-sinuous mode is non-in high-frequency structure
It is often easy to be energized；It can inhibit the generation of Para-sinuous mode using radial slow-wave structure, but the electronic light of such device
The design and processing of system be not up to the present also overripened, is unfavorable for being widely used for such device.
Invention content
In order to solve the problems in background technology, the present invention proposes one kind under conditions of low-voltage, downfield, not only
Can inhibit terahertz wave band greater than mould than coaxial vacuum electron device medium-high frequency inside configuration generate Para-sinuous mode swash
It encourages, and reduces the design and difficulty of processing of electron-optical system, while improving the power capacity and output work of device
The coaxial continuous wave Terahertz of gradual change of rate level tiltedly notes pipe.
The specific technical solution of the present invention is as follows：
The present invention provides a kind of coaxial continuous wave Terahertzs of gradual change tiltedly to note pipe, including external magnetic field generation device, electronics
Beam generation device, co-axial high-frequency structure outer barrel, co-axial high-frequency structure inner cylinder and coaxial output waveguide；The external magnetic field generates
Device is for generating along radial and axial magnetostatic field；
Its improvements is：
The coaxial output waveguide includes axially coaxial output waveguide inner cylinder disposed in parallel and coaxial output
Waveguide outer barrel；Co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder are arranged in parallel and with respect to axial direction cant angle thetas；0 ° of ＜
90 ° of θ ＜；Preferably：θ=30 °
Co-axial high-frequency structure outer barrel is being provided with metal slow-wave structure on the surface of co-axial high-frequency structure inner cylinder, coaxially
High-frequency structure constitutes gradual change co-axial high-frequency structure by metal slow-wave structure and the co-axial high-frequency structure inner cylinder being oppositely arranged respectively；Together
Axis high-frequency structure outer barrel is connect with coaxial output waveguide outer barrel, and co-axial high-frequency structure inner cylinder is connect with coaxial output waveguide inner cylinder；
Furtherly, the outer radius of the inside radius of co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder is from far from coaxial output waveguide
One end is gradually reduced to close to coaxial output waveguide one end, using graded metal slow-wave structure so that the cross section of slow-wave structure
Size increases, and is effectively improved the power capacity of gradual change co-axial high-frequency structure.Simultaneously corresponding to each slow wave periodic structure
Radius differ, cause the Para-sinuous mode of device that can not be energized, can preferably control gradual change co-axial high-frequency structure
Internal electromagnetic field mode.
Metal slow-wave structure is machined in co-axial high-frequency structure outer barrel close to the surface of co-axial high-frequency structure inner cylinder, added
The direction of the metal slow-wave structure groove depth of work is identical as the outer normal direction of tube inner surface of co-axial high-frequency structure；
Gap and coaxial output waveguide inner cylinder between co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder with it is coaxial
Gap between output waveguide outer barrel forms beam wave channel；
Electron beam generating device tilts transmission annular electron beam for generating, and generated inclination transmission annular electron beam exists
From the outer edge of metal slow-wave structure and co-axial high-frequency structure inner cylinder along metal slow-wave structure under the action of exterior guiding magnetic field
With the inclined direction of co-axial high-frequency structure inner cylinder towards the central transmission of metal slow-wave structure and co-axial high-frequency structure inner cylinder, while
Constantly close to metal slow-wave structure during transmission；Tilt the inner surface of transmission annular electron beam and co-axial high-frequency structure inner cylinder
Between angle be α, 1 °≤α≤5 °, tilt transmission annular electron beam during transmission, tilt transmission annular electron beam
Density can constantly increase automatically, to overcome electron beam density it is relatively low when Terahertz vacuum electron device can not normal starting of oscillation
The shortcomings that generating electromagnetic wave output, while electron beam is continuous close to graded metal slow-wave structure surface during transmission,
So that the energy conversion efficiency for tilting transmission annular electron beam improves.
The gradual change co-axial high-frequency knot that external magnetic field generation device is constituted in metal slow-wave structure and co-axial high-frequency structure inner cylinder
Between 0.1Tesla to 1.4Tesla, the amplitude of axial magnetic field is also arrived in 0.1Tesla the amplitude of the radial magnetic field generated in structure
Between 1.4Tesla.External magnetic field generation device uses electromagnetic coil or permanent magnet.
The voltage range for transmitting annular electron beam is tilted in 1.0kV between 50kV, current density range is in 5A/cm2Extremely
300A/cm2Between, low operating voltage can reduce the volume of primary electrical potential source needed for tiltedly note pipe, be conducive to the wide of the present invention
General use.
The range of each cycle length is between 0.02mm to 4.0mm in metal slow-wave structure, the width range of fluting
Between 0.01mm to 3.0mm, the depth bounds of metal slow-wave structure fluting are between 0.02mm to 4.0mm, metal slow wave knot
Length range of the bottom of structure away from co-axial high-frequency structure inner cylinder is between 0.1mm to 10.0mm.
The technique effect that the present invention has is as follows：
1, the present invention can increase the cross sectional dimensions of device using gradual change co-axial high-frequency structure so that the power of device holds
Amount becomes larger, and along radial direction and axial transmission, the current density of electron beam increases the electron beam of electron beam generating device automatically
Add, and electron beam is continuous close to slow-wave structure surface during transmission, is conducive to the energy conversion for improving electron beam
Efficiency, while the high-frequency structure of the present invention and the design of coaxial output waveguide and processing are easier to realize.
2, the present invention uses metal slow-wave structure so that the cross sectional dimensions of slow-wave structure increases, and is effectively improved gradually
Become the power capacity of co-axial high-frequency structure.The radius corresponding to each slow wave periodic structure differs simultaneously, leads to device
Para-sinuous mode can not be energized, and can preferably control the electromagnetic field mode of gradual change co-axial high-frequency inside configuration.
3, the present invention is a kind of deformation to co-axial high-frequency structure, and the magnetic field that external magnetic field generation device generates is along axis
Line direction has larger amplitude, therefore more mature coaxial or cylinder vacuum electronic device the outside of research may be used
The design scheme of magnetic field generation device.
4, the present invention has the component along radial negative direction using the speed for tilting transmission annular electron beam, tilts transmission
During transmission, tilting the density of transmission annular electron beam can constantly increase annular electron beam automatically, to overcome
Terahertz vacuum electron device normally starting of oscillation can not generate the shortcomings that electromagnetic wave exports, while electron beam when electron beam density is relatively low
It is continuous close to graded metal slow-wave structure surface during transmission so as to tilt the energy conversion of transmission annular electron beam
Efficiency improves.
5, the present invention is for generating the outside that electron beam generating device is located at metal slow-wave structure, progress that can be independent
Design, therefore be conducive to the design of electron beam generating device and the assembling of entire device.
6, the voltage of the present invention for tilting transmission annular electron beam is not higher than 50kV, and low operating voltage can subtract
The volume of primary electrical potential source, is conducive to being widely used for the present invention needed for small oblique note pipe.
7, the amplitude in the magnetic field that external magnetic field generation device of the present invention generates is less than 1.4Tesla, the guiding magnetic
The amplitude of field is smaller, can be achieved with using common coil or permanent magnet, to overcome huge outside needed for generation high-intensity magnetic field to set
Standby problem.
8, the inclination of the outer tube inner surface of co-axial high-frequency structure proposed by the present invention and co-axial high-frequency structure inner cylinder outer surface
Angle can be changed, and can change the structure size of device by changing angle of inclination so that device more easily design and
Processing.
Description of the drawings：
Fig. 1 is the diagrammatic cross-section of the present invention；
Fig. 2 is the diagrammatic cross-section for the gradual change co-axial high-frequency structure that the present invention is for generating 0.338 terahertz electromagnetic wave；
Fig. 3 is section signal of the present invention for the inclination transmission annular electron beam for generating 0.338 terahertz electromagnetic wave
Figure；
Fig. 4 is the diagrammatic cross-section for the coaxial output waveguide that the present invention is for generating 0.338 terahertz electromagnetic wave；
Fig. 5 A are that the present invention to generate frequency is that the coaxial continuous wave Terahertz of 0.338 Terahertz gradual change tiltedly notes pipe as embodiment
The frequency spectrum profile of produced THz wave；
Fig. 5 B are that the present invention tiltedly notes pipe as implementation to generate the coaxial continuous wave Terahertz of gradual change that frequency is 0.338 Terahertz
Example generates the power output figure of THz wave；
Reference numeral is as follows：
1, co-axial high-frequency structure outer barrel；2, graded metal slow-wave structure；3, transmission annular electron beam is tilted；4, co-axial high-frequency
Structure inner cylinder；5, coaxial output waveguide outer barrel；6, coaxial output waveguide inner cylinder；7, external magnetic field generation device.
Specific implementation mode
The present invention relates to a kind of coaxial continuous wave terahertzs of the gradual change that Terahertz frequency range electromagnetic wave can be generated under low voltage condition
Hereby tiltedly note is managed, in the devices can be in THz wave using inclination transmission annular electron beam 3 and metal slow-wave structure 2, device
Section generates frequency with continuous wave working condition and is more than the electromagnetic wave of 0.1 Terahertz, output power more than 1 watt.To generate 0.338 too
Hertz electromagnetic wave is the embodiment of the present invention, and 0.338 Terahertz is generated in the case of devising low-voltage, downfield using this programme
The coaxial continuous wave Terahertz of gradual change tiltedly note pipe, which can be 0.896Tesla in axially directed magnetic field amplitude, radial draw
It is when bearing 0.5Tesla, to generate the electromagnetic wave of 0.338 Terahertz to lead magnetic field amplitude, and output power can reach 572 watts.
As shown in Figure 1, the present invention is oblique to generate the coaxial continuous wave Terahertz of gradual change that frequency is 0.338 terahertz electromagnetic wave
Note pipe be embodiment schematic diagram, it by co-axial high-frequency structure outer barrel 1, metal slow-wave structure 2, tilt transmission annular electron beam 3,
7 groups of co-axial high-frequency structure inner cylinder 4, coaxial output waveguide outer barrel 5, coaxial output waveguide inner cylinder 6 and external magnetic field generation device
At；R indicates that radial direction, z indicate axial direction in figure.
It is the higher copper of conductivity that the oblique note, which manages the material of all metal materials, and introduced ohmic loss is smaller.
Coaxial output waveguide inner cylinder and coaxial output waveguide outer barrel are axially parallel；Co-axial high-frequency structure outer barrel and
Co-axial high-frequency structure inner cylinder is arranged in parallel and direction cant angle theta to axial；0 ° of 90 ° of ＜ θ ＜；(tilt angle theta is in the present embodiment
30°)；Co-axial high-frequency structure outer barrel is being provided with metal slow-wave structure on the surface of co-axial high-frequency structure inner cylinder, coaxial high
Frequency structure constitutes gradual change co-axial high-frequency structure by metal slow-wave structure and the co-axial high-frequency structure inner cylinder being oppositely arranged respectively；Coaxially
High-frequency structure outer barrel is connect with coaxial output waveguide outer barrel, and co-axial high-frequency structure inner cylinder is connect with coaxial output waveguide inner cylinder；Together
The outer radius of the inside radius of axis high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder from far from coaxial output waveguide one end to close
Coaxial output waveguide one end is gradually reduced.
Metal slow-wave structure is machined in co-axial high-frequency structure outer barrel close to the surface of co-axial high-frequency structure inner cylinder, added
The direction of the metal slow-wave structure groove depth of work is identical as the outer normal direction of tube inner surface of co-axial high-frequency structure；
Gap and coaxial output waveguide inner cylinder between co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder with it is coaxial
Gap between output waveguide outer barrel forms beam wave channel；
The electron beam generating device tilts transmission annular electron beam for generating, and generated transmission annular electron beam exists
From the outer edge of metal slow-wave structure and co-axial high-frequency structure inner cylinder along metal slow-wave structure under the action of exterior guiding magnetic field
With the inclined direction of co-axial high-frequency structure inner cylinder towards the central transmission of metal slow-wave structure and co-axial high-frequency structure inner cylinder, while
Constantly close to metal slow-wave structure during transmission；Tilt the inner surface of transmission annular electron beam and co-axial high-frequency structure inner cylinder
Between angle be α, 1 °≤α≤5 °.
Inner surface of the metal slow-wave structure 2 by micro-nano technology technology in co-axial high-frequency structure outer barrel 1 manufactures, metal slow wave
The direction of 2 groove depth of structure is identical as the normal direction of inner surface of co-axial high-frequency structure outer barrel 1.Tilt transmission annular electron beam 3
It is injected from one end that co-axial high-frequency structure outer barrel 1 is open big, radial direction and axial static caused by external magnetic field generation device 7
It under the guiding in magnetic field, is transmitted along the surface of metal slow-wave structure 2, and continuous close to metal slow-wave structure 2, and it is slow by metal
The gradual change co-axial high-frequency structure that wave structure 2 and co-axial high-frequency structure inner cylinder 4 are constituted generates interaction, and annular electro is transmitted by tilting
The kinetic energy of beamlet 3 is converted into the energy of electromagnetic wave, generates the electromagnetic wave of 0.338 Terahertz, by coaxial output waveguide inner cylinder 6 with
The coaxial waveguide output that coaxial output waveguide outer barrel 5 is constituted；The inclination transmission annular electron beam 3 for providing energy gets to co-axial high-frequency
It is absorbed on the inner surface of structure outer barrel 1.
Fig. 2 is that the present invention is co-axial high-frequency structural schematic diagram for generating 0.338 terahertz electromagnetic wave.The gradual change is coaxial
High-frequency structure includes metal slow-wave structure 2 and co-axial high-frequency structure inner cylinder 4, the number of cycles of graded metal slow-wave structure 2 are
48, the length L2 in each period is 0.1mm in metal slow-wave structure 2, and the width L1 of slow-wave structure fluting is 0.06mm, gold
The depth R1 for belonging to slow-wave structure fluting is 0.18mm, and the bottom of metal slow-wave structure 2 is away from the length R2 of co-axial high-frequency structure inner cylinder 4
For 1.0mm.
Fig. 3 is the present invention for generating the inclination transmission annular electron beam 3 of 0.338 terahertz electromagnetic wave same into gradual change
Width when axis high-frequency structure and position view.The current density for tilting transmission annular electron beam 3 is 41A/cm2, energy
Be 7 kiloelectron-volts, tilt transmission annular electron beam 3 width h2 be 0.1mm, tilt transmission 3 top position of annular electron beam away from
The length h1 of 2 bottom of graded metal slow-wave structure is 0.01mm, and external magnetic field generation device is mutual in the gradual change co-axial high-frequency structure
It is negative 0.5Tesla that active region, which is generated along the amplitude of radial magnetic field, and the magnetic field amplitude generated axially is 0.896Tesla.
Fig. 4 is the schematic diagram of the coaxial output waveguide of the present invention.Coaxial output waveguide outer barrel 5 and co-axial high-frequency structure outer barrel
The small one end connection of 1 opening, and the inner surface radius of coaxial output waveguide outer barrel 5 be open with co-axial high-frequency structure outer barrel 1 it is small
One end inner surface radius it is identical；Coaxial output waveguide outer barrel 5 is 4.0mm along the length L3 of axis direction, away from symmetry axis
Height R3 be 3.0mm.Coaxial output waveguide inner cylinder 6 and co-axial high-frequency structure the inner cylinder 4 small one end that is open are connect, and coaxially
The appearance radius surface of output waveguide inner cylinder 6 and co-axial high-frequency structure inner cylinder 4 the appearance radius surface of small one end that is open are identical；And it is same
Axis output waveguide inner cylinder 6 is 4.5mm along the length L4 of axis direction, and the height R4 away from symmetry axis is 2.14mm.
Fig. 5 A and Fig. 5 B are the simulation result that the embodiment of the present invention is calculated using particle simulation software, the embodiment of the present invention
Computation model is as shown in Figure 1, Fig. 5 A show that the device architecture of the embodiment of the present invention can generate the electromagnetism that frequency is 0.338 Terahertz
Wave, Fig. 5 B show that the device architecture of the embodiment of the present invention can generate 572 watts of electromagnetic wave output.
Claims (6)
1. a kind of coaxial continuous wave Terahertz of gradual change tiltedly notes pipe, including it is external magnetic field generation device, electron beam generating device, coaxial
High-frequency structure outer barrel, co-axial high-frequency structure inner cylinder and coaxial output waveguide；The external magnetic field generation device is for generating edge
Radial and axial magnetostatic field；
It is characterized in that：Coaxial output waveguide includes axially coaxial output waveguide inner cylinder disposed in parallel and coaxial defeated
Go out waveguide outer barrel；Co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder are arranged in parallel and with respect to axial direction cant angle thetas；0°
90 ° of ＜ θ ＜；Co-axial high-frequency structure outer barrel is being provided with metal slow-wave structure on the surface of co-axial high-frequency structure inner cylinder, together
Axis high-frequency structure constitutes gradual change co-axial high-frequency structure by metal slow-wave structure and the co-axial high-frequency structure inner cylinder being oppositely arranged respectively；
Co-axial high-frequency structure outer barrel is connect with coaxial output waveguide outer barrel, and co-axial high-frequency structure inner cylinder connects with coaxial output waveguide inner cylinder
It connects；
Metal slow-wave structure is machined in co-axial high-frequency structure outer barrel close to the surface of co-axial high-frequency structure inner cylinder, is processed
The direction of metal slow-wave structure groove depth is identical as the outer normal direction of tube inner surface of co-axial high-frequency structure；
Gap and coaxial output waveguide inner cylinder between co-axial high-frequency structure outer barrel and co-axial high-frequency structure inner cylinder and coaxial output
Gap between waveguide outer barrel forms beam wave channel；
Electron beam generating device tilts transmission annular electron beam for generating, and generated inclination transmits annular electron beam in outside
It guides under the action of magnetic field from the outer edge of metal slow-wave structure and co-axial high-frequency structure inner cylinder along metal slow-wave structure and same
The inclined direction of axis high-frequency structure inner cylinder while being transmitted towards the central transmission of metal slow-wave structure and co-axial high-frequency structure inner cylinder
During constantly close to metal slow-wave structure；It tilts between transmission annular electron beam and the inner surface of co-axial high-frequency structure inner cylinder
Angle be α, 1 °≤α≤5 °.
2. the coaxial continuous wave Terahertz of gradual change according to claim 1 tiltedly notes pipe, it is characterised in that：The co-axial high-frequency knot
The outer radius of the inside radius of structure outer barrel and co-axial high-frequency structure inner cylinder from far from coaxial output waveguide one end to close to coaxial output
Waveguide end is gradually reduced.
3. the coaxial continuous wave Terahertz of gradual change according to claim 1 or 2 tiltedly notes pipe, it is characterised in that：θ=30 °.
4. the coaxial continuous wave Terahertz of gradual change according to claim 3 tiltedly notes pipe, it is characterised in that：The external magnetic field production
The radial magnetic field that generating apparatus generates in the gradual change co-axial high-frequency structure that metal slow-wave structure and co-axial high-frequency structure inner cylinder are constituted
Amplitude between 0.1Tesla to 1.4Tesla, the amplitude of axial magnetic field is also between 0.1Tesla to 1.4Tesla.
5. the coaxial continuous wave Terahertz of gradual change according to claim 4 tiltedly notes pipe, it is characterised in that：Ring is transmitted in the inclination
The voltage range of shape electron beam is in 1.0kV between 50kV, and current density range is in 5A/cm2To 300A/cm2Between.
6. the coaxial continuous wave Terahertz of gradual change according to claim 5 tiltedly notes pipe, it is characterised in that：In metal slow-wave structure
The range of each cycle length is between 0.02mm to 4.0mm, and the width range of fluting is between 0.01mm to 3.0mm, gold
Belong to the depth bounds of slow-wave structure fluting between 0.02mm to 4.0mm, the bottom of metal slow-wave structure is away from co-axial high-frequency structure
The length range of inner cylinder is between 0.1mm to 10.0mm.
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| CN102789939A (en) * | 2012-06-19 | 2012-11-21 | 电子科技大学 | Energy output structure of panel vacuum electron device |
| CN105244248A (en) * | 2015-10-26 | 2016-01-13 | 西北核技术研究所 | Radial structure continuous wave terahertz oscillator |
| CN105719925A (en) * | 2016-04-22 | 2016-06-29 | 中国人民解放军国防科学技术大学 | High band magnetically insulated transmission line oscillator |
| CN105810537A (en) * | 2016-05-03 | 2016-07-27 | 中国人民解放军国防科学技术大学 | X-waveband high-impedance relativity theory klystron amplifier adopting annular beam cold cathode |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789939A (en) * | 2012-06-19 | 2012-11-21 | 电子科技大学 | Energy output structure of panel vacuum electron device |
| CN105244248A (en) * | 2015-10-26 | 2016-01-13 | 西北核技术研究所 | Radial structure continuous wave terahertz oscillator |
| CN105719925A (en) * | 2016-04-22 | 2016-06-29 | 中国人民解放军国防科学技术大学 | High band magnetically insulated transmission line oscillator |
| CN105810537A (en) * | 2016-05-03 | 2016-07-27 | 中国人民解放军国防科学技术大学 | X-waveband high-impedance relativity theory klystron amplifier adopting annular beam cold cathode |
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