CN106842276A - A kind of orifice-plate type collector flat board diagnoses ionisation chamber - Google Patents
A kind of orifice-plate type collector flat board diagnoses ionisation chamber Download PDFInfo
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- CN106842276A CN106842276A CN201710142192.3A CN201710142192A CN106842276A CN 106842276 A CN106842276 A CN 106842276A CN 201710142192 A CN201710142192 A CN 201710142192A CN 106842276 A CN106842276 A CN 106842276A
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- orifice
- plate type
- flat board
- collector
- cavity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/185—Measuring radiation intensity with ionisation chamber arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
- H01J47/02—Ionisation chambers
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
The invention discloses a kind of orifice-plate type collector flat board diagnosis ionisation chamber, it solve the problems, such as in the prior art solid collector to there is atmospheric density equilibration time relatively long, with atmospheric density equilibration time is shortened, the effect of operating efficiency is improved, its technical scheme is：Including ionization chamber enclosure, collector, entrance window, rear window and clamp bracket, the bottom of described ionization chamber enclosure is provided with clamp bracket, and one end of described ionization chamber enclosure is provided with rear window, and the other end of described ionization chamber enclosure is provided with entrance window；Described ionization chamber enclosure forms the ionisation chamber cavity of sealing with rear window, entrance window, described collector is fixed on the inside of ionization chamber enclosure by bearing, ionisation chamber cavity is separated into the first cavity and the second cavity by described collector, described collector is provided with some through holes, and described the first cavity and the second cavity increases the effect probability of secondary electron and air by through hole.
Description
Technical field
The present invention relates to Ionizing Radiation field, more particularly to a kind of orifice-plate type collector flat board diagnosis ionisation chamber.
Background technology
X ray image technology is widely used in health examination and medical diagnosis on disease, is the confrontation inside of human body disease of modern medicine
The important means of change, but X-ray has certain injury effect to people, therefore the dose of radiation authorized when measurement and control inspection
It is extremely important.
Flat board diagnosis ionisation chamber is exactly the effective tool that X-ray radiation dosage is measured using cavity ionization chamber principle, and it is former
Reason is that X-ray produces secondary electron, secondary electron to be collided with ionisation chamber inner air and produce electricity with the effect of ionisation chamber locular wall
From electric charge, the size of dose of radiation is obtained by collecting and measuring ionization electric charge.
Plane ionization chamber is mainly made up of ionization chamber enclosure and central collection pole, and central collection pole is typically a piece of and solid leads
Electric disk, ionization chamber enclosure is rounded plate shaped.Because solid collector is to the compartmentation of ionisation chamber cavity, make air close
Degree equilibration time is relatively long.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of orifice-plate type collector flat board diagnosis ionisation chamber, adopt
Replace solid panel collector with orifice plate collector, by increasing capacitance it is possible to increase secondary electron and air effect probability in ionisation chamber, shorten empty
Air tightness equilibration time, improves operating efficiency.
The present invention uses following technical proposals：
A kind of orifice-plate type collector flat board diagnoses ionisation chamber, including ionization chamber enclosure, collector, entrance window, rear window and folder
Support is held, the bottom of described ionization chamber enclosure is provided with clamp bracket, and one end of described ionization chamber enclosure is provided with rear window, described
The other end of ionization chamber enclosure be provided with entrance window；Described ionization chamber enclosure forms the ionisation chamber of sealing with rear window, entrance window
Cavity, described collector is fixed on the inside of ionization chamber enclosure by bearing, and described collector separates ionisation chamber cavity
Into the first cavity and the second cavity, described collector is provided with some through holes, and described the first cavity and the second cavity passes through
Through hole increases the effect probability of secondary electron and air.
Further, the section of described collector is circle.
Further, the material of described collector is lucite, and the surface of described collector is provided with electrically conductive graphite.
Further, described through hole equidistantly distributed.
Further, the section of described ionization chamber enclosure is circle.
Further, the material of described ionization chamber enclosure is aluminium alloy.
Further, the material of described rear window and entrance window is polyester film, described rear window and the surface of entrance window
It is provided with electrically conductive graphite.
Further, described collector is connected with signal lead-out wire.
Further, described signal lead-out wire uses coaxial cable.
Further, the material of described bearing is polytetrafluoroethylene (PTFE).
Further, during a kind of orifice-plate type collector flat board diagnosis ionisation chamber can be applied to radiotherapy.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, orifice-plate type collector of the invention compared to existing technology in solid panel collector there is atmospheric density to balance
The effect that time substantially shortens, shortens equilibration time and is not less than 5 seconds, improves operating efficiency；
2nd, orifice-plate type collector of the invention can increase air effect probability in secondary electron and ionisation chamber, ionisation chamber spirit
Sensitivity improves 2%.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is structural representation front view of the invention；
Fig. 2 is structural representation side view of the invention；
Wherein, 1- ionization chamber enclosure, 2- entrance windows, 3- collectors, 4- clamp brackets, 5- rear windows, 6- signal lead-out wires, 7-
Bearing, 8- through holes, the cavitys of 9- first, the cavitys of 10- second.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, to there is atmospheric density equilibration time relatively long for solid collector in the prior art
Deficiency, in order to solve technical problem as above, present applicant proposes a kind of orifice-plate type collector flat board diagnosis ionisation chamber.
In a kind of typical implementation method of the application, as Figure 1-Figure 2, there is provided a kind of orifice-plate type collector flat board
Diagnosis ionisation chamber, including ionization chamber enclosure 1, collector 3, entrance window 2, rear window 5 and clamp bracket 4, described ionization chamber enclosure 1
Bottom be provided with clamp bracket 4 for supporting ionisation chamber, one end of described ionization chamber enclosure 1 is provided with rear window 5, described electricity
Entrance window 2 is provided with from the other end of chamber enclosure 1, described ionization chamber enclosure 1 forms the ionisation chamber of sealing with rear window 5, entrance window 2
Cavity, described collector 3 is fixed on the inside of ionization chamber enclosure 1 by bearing 7, and described collector 3 is by ionisation chamber cavity
The first cavity 9 and the second cavity 10 are separated into, described collector 3 is provided with some through holes 8, the first described cavity 9 and
Two cavitys 10 increase the effect probability of secondary electron and air by through hole 8.
Further, the section of described collector 3 is circle.
Further, the material of described collector 3 is lucite, and the surface of described collector 3 is provided with conductive stone
Ink.
Further, the described equidistantly distributed of through hole 8.
Further, the section of described ionization chamber enclosure 1 is circle.
Further, the material of described ionization chamber enclosure 1 is aluminium alloy.
Further, described rear window 5 and the material of entrance window 2 are polyester film, described rear window 5 and entrance window 2
Surface is provided with electrically conductive graphite.
Further, described collector 3 is connected with signal lead-out wire 6.
Further, described signal lead-out wire 6 uses coaxial cable.
Further, the material of described bearing 7 is polytetrafluoroethylene (PTFE), and the section of described bearing is annular, and is propped up
Thickness of the width of seat more than collector.
Further, during a kind of orifice-plate type collector flat board diagnosis ionisation chamber can be applied to radiotherapy.
In the another embodiment of the application, the width for ionizing chamber enclosure 1 is 25mm, described rear window 5 and entrance window 2
A diameter of 50mm；Use thickness that collector 3 is processed for the poly (methyl methacrylate) plate of 0.5mm, the section of the collector 3 being processed into is circle
Shape, a diameter of 48mm, and uniformly get through hole 8, a diameter of 2mm of through hole 8 on poly (methyl methacrylate) plate；In the centre bit of collector 3
Put and make a call to a through hole, the surrounding of center through hole is each to make a call to a through hole, via count totally five；Led in the surface coating of collector
Electro-graphitic, dries under 50 DEG C of environment, forms orifice-plate type collector.
Above-mentioned via count can specifically be set according to actual collector size, be not limited to 5.
Above-mentioned orifice-plate type collector has the obvious effect for shortening of atmospheric density equilibration time compared to solid panel collector
Really, shorten equilibration time to be not less than 5 seconds, improve operating efficiency；Secondary electron and air effect probability in ionisation chamber can be increased,
Ionisation chamber sensitivity improves 2%.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of orifice-plate type collector flat board diagnosis ionisation chamber, it is characterised in that including ionization chamber enclosure, collector, entrance window,
Rear window and clamp bracket, the bottom of described ionization chamber enclosure are provided with clamp bracket, and one end of described ionization chamber enclosure is provided with
Rear window, the other end of described ionization chamber enclosure is provided with entrance window；Described ionization chamber enclosure forms sealing with rear window, entrance window
Ionisation chamber cavity, described collector is fixed on the inside of ionization chamber enclosure by bearing, and described collector is by ionisation chamber
Cavity is separated into the first cavity and the second cavity, and described collector is provided with some through holes, the first described cavity and second
Cavity increases the effect probability of secondary electron and air by through hole.
2. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described collection
The section of pole is circle.
3. a kind of orifice-plate type collector flat board according to claim 2 diagnoses ionisation chamber, it is characterised in that described collection
The material of pole is lucite, and the surface of described collector is provided with electrically conductive graphite.
4. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described through hole
Equidistantly distributed.
5. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described ionization
The section of chamber enclosure is circle.
6. a kind of orifice-plate type collector flat board according to claim 5 diagnoses ionisation chamber, it is characterised in that described ionization
The material of chamber enclosure is aluminium alloy.
7. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described rear window
Material with entrance window is polyester film, and described rear window and the surface of entrance window are provided with electrically conductive graphite.
8. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described collection
Pole is connected with signal lead-out wire.
9. a kind of orifice-plate type collector flat board according to claim 7 diagnoses ionisation chamber, it is characterised in that described signal
Lead-out wire uses coaxial cable.
10. a kind of orifice-plate type collector flat board according to claim 1 diagnoses ionisation chamber, it is characterised in that described branch
The material of seat is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142192.3A CN106842276B (en) | 2017-03-10 | 2017-03-10 | Orifice plate type collector plate diagnosis ionization chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142192.3A CN106842276B (en) | 2017-03-10 | 2017-03-10 | Orifice plate type collector plate diagnosis ionization chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106842276A true CN106842276A (en) | 2017-06-13 |
| CN106842276B CN106842276B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710142192.3A Active CN106842276B (en) | 2017-03-10 | 2017-03-10 | Orifice plate type collector plate diagnosis ionization chamber |
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Citations (9)
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|---|---|---|---|---|
| CN2684210Y (en) * | 2004-02-06 | 2005-03-09 | 北京清大科技股份有限公司 | High stabilizing end face ionization chamber |
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| RU124434U1 (en) * | 2012-06-22 | 2013-01-20 | Федеральное государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" | MASS SPECTROMETER |
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2017
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| CN106842276B (en) | 2023-06-16 |
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