CN206516607U - A kind of pair of collector X-ray cylindrical type protects ionisation chamber - Google Patents
A kind of pair of collector X-ray cylindrical type protects ionisation chamber Download PDFInfo
- Publication number
- CN206516607U CN206516607U CN201720211442.XU CN201720211442U CN206516607U CN 206516607 U CN206516607 U CN 206516607U CN 201720211442 U CN201720211442 U CN 201720211442U CN 206516607 U CN206516607 U CN 206516607U
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- China
- Prior art keywords
- collector
- ionisation chamber
- pair
- central collection
- cylindrical type
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- Expired - Fee Related
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- 239000012212 insulator Substances 0.000 claims abstract description 11
- 229920005479 Lucite® Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Electron Tubes For Measurement (AREA)
- Measurement Of Radiation (AREA)
Abstract
A kind of pair of collector X-ray cylindrical type protects ionisation chamber, including ionization room housing, entrance window is provided with ionization room housing, central collection pole is provided with the ionisation chamber enclosure interior relative with incident window position, in central collection pole the second collector is provided with outside, central collection pole and the second collector are arranged in ionization room housing by insulator, ionisation chamber signal lead-out wire is connected through insulator with central collection pole and the second collector, and the other end of ionisation chamber signal lead-out wire is connected with secondary meter.The utility model uses said structure, using double collectors in ionisation chamber, considerably increases the contact area for increasing collector and medium, get over distance so as to shorten electric charge, charge transistion time shortens so that ionization current increases, so as to improve the sensitivity of ionisation chamber.
Description
Technical field：
The utility model is related to a kind of pair of collector X-ray cylindrical type protection ionisation chamber.
Background technology：
Ionisation chamber is a kind of equipment for measuring X-ray intensity, and it is using air as medium, and ionising radiation is produced in media as well
Ion pair is ionized, in the presence of electric field, negative ions drift about to negative pole and positive pole respectively, ionization current are formed, due to ionization
Electric current is directly proportional to the intensity radiated, measures the intensity that the electric current can obtain ionising radiation.The shell and ionisation chamber of ionisation chamber
Extremely two electrodes of interior collection, form electric field between shell and collector, at present, and the collector of ionisation chamber is mostly to be bar-shaped
Structure, collect limited area, therefore electric charge get over distance it is longer, the transition time of electric charge is longer, and the sensitivity of ionisation chamber is not
It is high.
Utility model content：
The utility model provides a kind of pair of collector X-ray cylindrical type protection ionisation chamber, its reasonable in design, in electricity
From interior using double collectors, the contact area for increasing collector and medium is considerably increased, so as to shorten crossing for electric charge
More distance, charge transistion time shortens so that ionization current increases, so as to improve the sensitivity of ionisation chamber, solves existing
Problem present in technology.
The utility model is to solve the technical scheme that is used of above-mentioned technical problem：
A kind of pair of collector X-ray cylindrical type protects ionisation chamber, including ionization room housing, be provided with ionization room housing into
Window is penetrated, central collection pole is provided with the ionisation chamber enclosure interior relative with incident window position, is provided with central collection pole in outside
Second collector, central collection pole and the second collector are arranged in ionization room housing by insulator, and ionisation chamber signal draws
Outlet is connected through insulator with central collection pole and the second collector, the other end and secondary meter of ionisation chamber signal lead-out wire
It is connected.
Described second collects extremely cyclic structure.
Described second collects extremely lucite ring, in the outer application graphite coating of lucite ring.
The insulator is teflon plate.
The section radius of the central collection pole are 90mm, and the annular cross section radius of second collector is 180mm.
The utility model uses said structure, using double collectors in ionisation chamber, considerably increases and increases collector
With the contact area of medium, so as to shorten the distance of getting over of electric charge, charge transistion time shortens so that ionization current increases,
So as to improve the sensitivity of ionisation chamber.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
The structural representation of Fig. 2 the second collectors of the present utility model.
In figure, 1, ionization room housing, 2, entrance window, 3, central collection pole, the 4, second collector, 5, insulator, 6, ionization
Room signal lead-out wire.
Embodiment：
For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this reality
It is described in detail with new.
As shown in figs. 1-2, a kind of pair of collector X-ray cylindrical type protection ionisation chamber, including ionization room housing 1, in electricity
Entrance window 2 is provided with from room housing 1, central collection pole 3 is provided with inside the ionization room housing 1 relative with the position of entrance window 2,
Central collection pole 3 is provided with the second collector 4 in outside, and the collector 4 of central collection pole 3 and second is arranged on by insulator 5
Ionize in room housing 1, ionisation chamber signal lead-out wire 6 is connected through insulator 5 with the collector 4 of central collection pole 3 and second, ionization
The other end of room signal lead-out wire 6 is connected with secondary meter.
Second collector 4 is cyclic structure.
Second collector 4 is lucite ring, in the outer application graphite coating of lucite ring.
The insulator 5 is teflon plate.
The section radius of the central collection pole 3 are 90mm, and the annular cross section radius of second collector 4 is 180mm.
When carrying out X-ray intensity measurement, X-ray is injected in ionisation chamber by entrance window 2, and ray forms electricity in atmosphere
Moved in the electric field formed from electric charge, ionization electric charge between ionization room housing 1 and the collector 4 of central collection pole 3 and second,
Due to the presence of the second collector 3, the contact area of collector and air dielectric, the road that ionization electric charge is collected are considerably increased
Footpath averagely reduces half, so that the transition time of ion decreases half, increases ionization current, is entered by secondary meter
Row measurement, sensitivity is lifted.Under 250V polarizing voltages, 1mGy/min close rates coincidence loss improves more than 20%.
Ionisation chamber is protected using of the present utility model pair of collector X-ray cylindrical type, using double collectors in ionisation chamber,
The contact area for increasing collector and medium is considerably increased, so as to shorten the distance of getting over of electric charge, charge transistion time
Shorten so that ionization current increases, so as to improve the sensitivity of ionisation chamber.
Above-mentioned embodiment cannot function as the limitation to the utility model protection domain, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within guarantor of the present utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (5)
1. a kind of pair of collector X-ray cylindrical type protects ionisation chamber, it is characterised in that：Including ionization room housing, in ionisation chamber shell
Body is provided with entrance window, central collection pole is provided with the ionisation chamber enclosure interior relative with incident window position, in central collection pole
The second collector is provided with outside, central collection pole and the second collector are arranged in ionization room housing by insulator, electricity
It is connected from room signal lead-out wire through insulator with central collection pole and the second collector, the other end of ionisation chamber signal lead-out wire
It is connected with secondary meter.
2. a kind of pair of collector X-ray cylindrical type according to claim 1 protects ionisation chamber, it is characterised in that：Described
Two collect extremely cyclic structure.
3. a kind of pair of collector X-ray cylindrical type according to claim 2 protects ionisation chamber, it is characterised in that：Described
Two collect extremely lucite ring, in the outer application graphite coating of lucite ring.
4. a kind of pair of collector X-ray cylindrical type according to claim 1 protects ionisation chamber, it is characterised in that：It is described exhausted
Edge is teflon plate.
5. a kind of pair of collector X-ray cylindrical type according to claim 2 protects ionisation chamber, it is characterised in that：In described
The section radius of heart collector are 90mm, and the annular cross section radius of second collector is 180mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211442.XU CN206516607U (en) | 2017-03-06 | 2017-03-06 | A kind of pair of collector X-ray cylindrical type protects ionisation chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211442.XU CN206516607U (en) | 2017-03-06 | 2017-03-06 | A kind of pair of collector X-ray cylindrical type protects ionisation chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206516607U true CN206516607U (en) | 2017-09-22 |
Family
ID=59870008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720211442.XU Expired - Fee Related CN206516607U (en) | 2017-03-06 | 2017-03-06 | A kind of pair of collector X-ray cylindrical type protects ionisation chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206516607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653553A (en) * | 2017-03-06 | 2017-05-10 | 山东中测校准质控技术有限公司 | X-ray cylindrical protective ionization chamber with double collectors |
-
2017
- 2017-03-06 CN CN201720211442.XU patent/CN206516607U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653553A (en) * | 2017-03-06 | 2017-05-10 | 山东中测校准质控技术有限公司 | X-ray cylindrical protective ionization chamber with double collectors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |