CN208367114U - A kind of direct-heated cathode comprehensive performance test device - Google Patents
A kind of direct-heated cathode comprehensive performance test device Download PDFInfo
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- CN208367114U CN208367114U CN201820742487.4U CN201820742487U CN208367114U CN 208367114 U CN208367114 U CN 208367114U CN 201820742487 U CN201820742487 U CN 201820742487U CN 208367114 U CN208367114 U CN 208367114U
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- cathode
- direct
- ionization source
- electron bombardment
- test device
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Abstract
A kind of direct-heated cathode comprehensive performance test device, high vacuum interface, getter device, electron bombardment ionization source, strip-shaped cathode, molybdenum sheet anode including being separately fixed at conductive core pole upper end through more fixed molybdenum rods, the electron bombardment ionization source and molybdenum sheet anode are that upper and lower laminated construction is fixed, and strip-shaped cathode is placed between electron bombardment ionization source and molybdenum sheet anode；The strip-shaped cathode includes tungsten band and emitter, and emitter, which is sintered, to be placed on tungsten belt surface；The electron bombardment ionization source includes the stronger Ba-W cathode of emissivities and heater assembly.The test device has many advantages, such as easy to operate, time-consuming short and cheap.
Description
Technical field
The utility model relates to a kind of direct-heated cathode comprehensive performance test devices.
Background technique
As vacuum electron device develops towards high-output power, long-life direction.Direct-heated cathode is (for example, tungsten wire is negative
Pole) it is widely used in the fields such as medical accelerators, X-ray diffractometer, high power CW wave magnetron.Compared to indirect-heating
Cathode, such as oxide-coated cathode, barium-tungsten dispense cathode etc., direct-heated cathode (for example, tungsten cathode) have preferable high temperature resistance,
Anti-toxicity energy, many merits such as structure is simple, the service life is long and low energy consumption.But currently used for research direct-heated cathode heat hair
It penetrates and the test equipment of life characteristic is less, and test result accuracy is also less high.And it is used to study direct-heated cathode resistance to
Even there is not been reported for the equipment of electron bombardment characteristic.
Utility model content
Its purpose of the utility model, which is that, provides a kind of direct-heated cathode comprehensive performance test device, solves current use
It is less in the test equipment of research direct-heated cathode heat emission and life characteristic, and test result accuracy is also less high asks
Topic.
It adopts the technical scheme that achieve the above object, a kind of direct-heated cathode comprehensive performance test device, including
High vacuum interface, getter device, electron bombardment ionization source, the band-like yin of conductive core pole upper end are separately fixed at through more fixed molybdenum rods
Pole, molybdenum sheet anode, the electron bombardment ionization source and molybdenum sheet anode are that upper and lower laminated construction is fixed, and strip-shaped cathode is placed in electron bombardment ionization source
Between molybdenum sheet anode；The strip-shaped cathode includes tungsten band and emitter, and emitter, which is sintered, to be placed on tungsten belt surface；The electricity
Sub- bombardment source includes the stronger Ba-W cathode of emissivities and heater assembly.
Beneficial effect
The utility model has the following advantages that compared with prior art.
1. the test to direct-heated cathode heat emission characteristic, resistance to electron bombardment performance and life characteristic can be completed；
2. having many advantages, such as easy to operate, time-consuming short and cheap.
Detailed description of the invention
Below in conjunction with attached drawing, the utility model is described in further detail.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged diagram of strip-shaped cathode in the utility model；
Fig. 3 is the enlarged diagram of electron bombardment ionization source in the utility model；
Fig. 4 is the equivalent circuit schematic of the utility model.
Specific embodiment
The present apparatus includes high vacuum interface 6, the getter that 5 upper end of conductive core pole is separately fixed at through more fixed molybdenum rods 7
Device 4, electron bombardment ionization source 2, strip-shaped cathode 1, molybdenum sheet anode 3, as shown in Figure 1-Figure 3, the electron bombardment ionization source 2 and molybdenum sheet anode
3 fix for upper and lower laminated construction, and strip-shaped cathode 1 is placed between electron bombardment ionization source 2 and molybdenum sheet anode 3；The strip-shaped cathode 1 includes
Tungsten band 8 and emitter 9, emitter 9, which is sintered, to be placed on 8 surface of tungsten band；The electron bombardment ionization source 2 includes that emissivities are stronger
Ba-W cathode 10 and heater assembly 11.
8 width of tungsten band between 2 ~ 5mm, emitter 9 and tungsten band 8 it is of same size.
It is 10 ~ 15mm that the Ba-W cathode 10, which emits diameter, with a thickness of 2 ~ 5mm, 11 diameter of heater assembly and Ba-W cathode
10 is identical, and 11 height of heater assembly is 10 ~ 20mm.
The molybdenum sheet anode 3 is generally disc, and diameter is 10 ~ 20mm, with a thickness of 0.5 ~ 2mm.
In the utility model, the getter device 4 is generally used for the high vacuum interface 6 of vacuum diode by sealing
Afterwards, continue for guaranteeing the condition of high vacuum degree in vacuum tube；The conductive core pole 5 guarantees test device just for connecting power supply
Often power supply；The high vacuum interface 6 is for connecting high vacuum system (generally by mechanical pump, molecular pump, ionic pump three-level vacuum pump
System composition), guarantee that vacuum diode works under high vacuum environment；7 one side of fixed molybdenum rod for strip-shaped cathode 1,
The fixation of the components such as electron bombardment ionization source 2, molybdenum sheet anode 3, getter device 4, on the other hand fixed molybdenum rod 7 is connected conductive core
On column 5, the effect of " conducting wire " is functioned similarly to；The distance between the strip-shaped cathode 1 and electron bombardment ionization source 2 are 1.5 ~ 2.5mm
Between, the distance between electron bombardment ionization source 2 and molybdenum sheet anode 3 are between 3 ~ 5mm.
The equivalent circuit theory of the utility model as shown in figure 4, by rationally adjust strip-shaped cathode 1, electron bombardment ionization source 2,
Current potential between molybdenum sheet anode 3 can be realized in the same device to strip-shaped cathode heat emission, resistance to electron bombardment and service life
The test of characteristic.
Claims (4)
1. a kind of direct-heated cathode comprehensive performance test device, including conductive core pole is separately fixed at through more fixed molybdenum rods (7)
(5) high vacuum interface (6), getter device (4), electron bombardment ionization source (2), strip-shaped cathode (1), the molybdenum sheet anode (3) of upper end,
It is characterized in that, the electron bombardment ionization source (2) and molybdenum sheet anode (3) are that upper and lower laminated construction is fixed, and strip-shaped cathode (1) is placed in electronics
Between bombardment source (2) and molybdenum sheet anode (3)；The strip-shaped cathode (1) includes tungsten band (8) and emitter (9), emitter (9) quilt
Sintering is placed on tungsten band (8) surface；The electron bombardment ionization source (2) includes the stronger Ba-W cathode (10) of emissivities and heater group
Part (11).
2. a kind of direct-heated cathode comprehensive performance test device according to claim 1, which is characterized in that the tungsten band
(8) width is between 2 ~ 5mm, emitter (9) and tungsten band (8) it is of same size.
3. a kind of direct-heated cathode comprehensive performance test device according to claim 1, which is characterized in that the Ba-W yin
It is 10 ~ 15mm that pole (10), which emits diameter, and with a thickness of 2 ~ 5mm, heater assembly (11) diameter is identical as Ba-W cathode (10), heater group
Part (11) is highly 10 ~ 20mm.
4. a kind of direct-heated cathode comprehensive performance test device according to claim 1, which is characterized in that the molybdenum sheet sun
Pole (3) is generally disc, and diameter is 10 ~ 20mm, with a thickness of 0.5 ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820742487.4U CN208367114U (en) | 2018-05-18 | 2018-05-18 | A kind of direct-heated cathode comprehensive performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820742487.4U CN208367114U (en) | 2018-05-18 | 2018-05-18 | A kind of direct-heated cathode comprehensive performance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367114U true CN208367114U (en) | 2019-01-11 |
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ID=64935583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820742487.4U Expired - Fee Related CN208367114U (en) | 2018-05-18 | 2018-05-18 | A kind of direct-heated cathode comprehensive performance test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208367114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243916A (en) * | 2020-01-19 | 2020-06-05 | 中国科学院电子学研究所 | Anode, preparation method thereof and cathode emission testing device |
| CN112798650A (en) * | 2020-12-30 | 2021-05-14 | 中国科学院空天信息创新研究院 | Device and method for testing electron bombardment resistance of cathode |
-
2018
- 2018-05-18 CN CN201820742487.4U patent/CN208367114U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243916A (en) * | 2020-01-19 | 2020-06-05 | 中国科学院电子学研究所 | Anode, preparation method thereof and cathode emission testing device |
| CN111243916B (en) * | 2020-01-19 | 2021-10-29 | 中国科学院电子学研究所 | Anode, preparation method thereof and cathode emission testing device |
| CN112798650A (en) * | 2020-12-30 | 2021-05-14 | 中国科学院空天信息创新研究院 | Device and method for testing electron bombardment resistance of cathode |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20190518 |