CN106783503B - A kind of hollow cylindrical collector diagnoses ionisation chamber - Google Patents
A kind of hollow cylindrical collector diagnoses ionisation chamber Download PDFInfo
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- CN106783503B CN106783503B CN201710144340.5A CN201710144340A CN106783503B CN 106783503 B CN106783503 B CN 106783503B CN 201710144340 A CN201710144340 A CN 201710144340A CN 106783503 B CN106783503 B CN 106783503B
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- collector
- ionisation chamber
- ionization
- ionisation
- chamber
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- 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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- Measurement Of Radiation (AREA)
Abstract
The invention discloses a kind of hollow cylindrical collectors to diagnose ionisation chamber, it solves the problems, such as that ionisation chamber collection area is small in the prior art, sensitivity is not high enough, with the further performance and accuracy of measurement for promoting ionisation chamber, increase and collect area, the effect of influence of the recombination losses to measurement is reduced, technical solution is：Including ionization chamber enclosure, collector, insulator and ionisation chamber pedestal, which is characterized in that the collector is arranged on the inside of ionization chamber enclosure, and the lower part of the ionization chamber enclosure is equipped with ionisation chamber pedestal；The collector is installed on by insulator on ionisation chamber pedestal, and closed ionisation chamber cavity is formed between the ionization chamber enclosure, collector and ionisation chamber pedestal, and the collection extremely hollow-core construction is increased by hollow-core construction and collects area.
Description
Technical field
The present invention relates to Ionizing Radiation field more particularly to a kind of hollow cylindrical collector diagnosis ionisation chambers.
Background technology
Ionisation chamber is a kind of using air as medium, passes through the secondary for measuring X-ray, gamma-rays is generated in ionization chamber wall
Electronics and room air act on the ionization charge to be formed, and so as to obtain amount of radiation information, then by secondary meter measure radiation
Amount or radiation intensity.
Ionisation chamber is generally cavity structure, applies certain DC voltage on shell and collector and forms electric field, passes through
Collector collects ionization charge.Collector is generally solid club shaped structure, collector entirety or outer wall conduction or the conductive painting of coating
Layer.Ionisation chamber is generally divided into two kinds of ventilation type and closed type, is divided into according to the difference of structure as cylindrical type and plate.For circle
Column type ionisation chamber still remains and collects the deficiencies of area is small, sensitivity is not high enough.
As Chinese patent CN202533587U discloses a kind of ion-chamber for intense gamma radiation field measurement under emergency conditions
Detector, including cylindrical stainless steel ionisation chamber probe and cable, stainless steel ionisation chamber probe is sealed by coaxial thin-wall stainless steel
Shell and the liner composition of structure, liner inner layer collect extremely hollow aluminum cylinder.Although collector uses hollow cylinder knot
Structure, but it uses very small electrode spacing, it is therefore an objective to meet relatively low Lower Range and the high measurement upper limit.
In conclusion still lack effective for increasing the problem of collecting area, raising ionisation chamber sensitivity in the prior art
Solution.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of hollow cylindrical collectors to diagnose ionisation chamber,
The performance and accuracy of measurement of ionisation chamber are further promoted, increases and collects area, reduces influence of the recombination losses to measurement.
The present invention uses following technical proposals：
A kind of hollow cylindrical collector diagnoses ionisation chamber, including ionization chamber enclosure, collector, insulator and ionisation chamber bottom
Seat, which is characterized in that the collector is arranged on the inside of ionization chamber enclosure, and the lower part of the ionization chamber enclosure is equipped with ionization
Room pedestal；The collector is installed on by insulator on ionisation chamber pedestal, ionization chamber enclosure, collector and the ionization
Closed ionisation chamber cavity is formed between the pedestal of room, the collection extremely hollow-core construction increases collection surface by hollow-core construction
Product.
Further, the collection is extremely cylindrical, and collector is used for collecting the charge of ionising radiation formation；From collection
Cylindrical space is opened up at the top of pole in the axial direction and forms hollow-core construction, so as to increase collection area, shortens getting over for charge
Time reduces influence of the recombination losses to measurement.
Further, the bottom of the collector is connected with signal lead-out wire.
Further, the material of the collector is organic glass.
Further, the outer surface of the collector is equipped with graphite coating.
Further, the ionization chamber enclosure is cylinder, and the ionization chamber enclosure is external electrode.
Further, the material of the ionization chamber enclosure is organic glass.
Further, the inner wall of the ionization chamber enclosure is equipped with graphite coating.
Further, the material of the ionisation chamber pedestal is aluminium.
Further, the material of the insulator is polytetrafluoroethylene (PTFE), and insulator makes external electrode and collector height exhausted
Edge reduces leakage current and the superposition of useful signal is disturbed.
Further, a kind of hollow cylindrical collector diagnosis ionisation chamber can be applied to radiation amount or radiation is strong
The measurement of degree.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention uses hollow collector, can promote the sensitivity of ionisation chamber, reduces ionisation chamber collector to low energy X
The sink effect of ray, improvement ionisation chamber energy is corresponding, improves the energy response in the range of the X-ray energy of 50-150KV
0.2%；
2nd, hollow collector of the invention can shorten the transition time of charge, increase and collect area, reduce recombination losses
Influence to measurement, under 250V polarizing voltages, 1Gy/min dosage rates recombination losses improve more than 0.3%.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the top view of the collector of the present invention；
Wherein, 1- ionizes chamber enclosure, 2- graphite coatings, 3- insulators, 4- signal lead-out wires, 5- collectors, 6- electricity
From room cavity, 7- ionisation chamber pedestals.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has 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
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, the deficiency for collecting that area is small, sensitivity is not high enough exists in the prior art, in order to
The technical issues of solving as above, present applicant proposes a kind of hollow cylindrical collectors to diagnose ionisation chamber.
In a kind of typical embodiment of the application, as shown in Figure 1, providing a kind of hollow cylindrical collector diagnosis
Ionisation chamber, including ionization chamber enclosure 1, collector 5, insulator 3 and ionisation chamber pedestal 7, the collector 5 is arranged on outside ionisation chamber
The inside of shell 1, the lower part of the ionization chamber enclosure 1 are equipped with ionisation chamber pedestal 7；The collector 5 is installed by insulator 3
In on ionisation chamber pedestal 7, ionisation chamber cavity 6, institute are formed between the ionization chamber enclosure 1, collector 5 and ionisation chamber pedestal 7
The collector 5 stated is hollow-core construction, is increased by hollow-core construction and collects area.
Above-mentioned collector 5 is cylinder, and collector 5 is used for collecting the charge of ionising radiation formation；From 5 top of collector
Cylindrical space is opened up in the axial direction and forms hollow-core construction, so as to increase collection area, is shortened the transition time of charge, is subtracted
Few influence of the recombination losses to measurement.
The bottom of above-mentioned collector 5 is connected with signal lead-out wire 4.
The material of above-mentioned collector 5 is organic glass.
The outer surface of above-mentioned collector 5 is equipped with graphite coating.
Above-mentioned ionization chamber enclosure 1 is cylinder, and the ionization chamber enclosure 1 is external electrode；The collector 5 is interior
Electrode forms plus polarizing voltage on external electrode and interior electrode and collects electric field.
The material of above-mentioned ionization chamber enclosure 1 is organic glass.
The inner wall of above-mentioned ionization chamber enclosure 1 is equipped with graphite coating.
The material of above-mentioned ionisation chamber pedestal 7 is aluminium.
The material of above-mentioned insulator 3 is polytetrafluoroethylene (PTFE), and insulator 3 makes 5 high-insulation of external electrode and collector, is reduced
Leakage current disturbs the superposition of useful signal.
Above-mentioned hollow cylindrical collector diagnosis ionisation chamber can be applied to the survey of radiation amount or radiation intensity
Amount.
In the another embodiment of the application, the height of above-mentioned collector 5 is 38mm, a diameter of Ф 4mm, described
The boring diameter of movement of collector 5 is Ф 2mm；The height of described ionization chamber enclosure 1 is 45mm, a diameter of Ф 32mm,
The wall thickness of the ionization chamber enclosure 1 is 0.4mm.
Above-mentioned hollow collecting pole structure can promote the sensitivity of ionisation chamber, reduce ionisation chamber collector 5 and low energy X is penetrated
The sink effect of line improves ionisation chamber energy response, improves the energy response in the range of the X-ray energy of 50-150KV
0.2%；And the transition time of charge can be shortened, increase and collect area, influence of the recombination losses to measurement is reduced, in 250V
Under polarizing voltage, 1Gy/min dosage rates recombination losses improve more than 0.3%.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. a kind of hollow cylindrical collector diagnoses ionisation chamber, including ionization chamber enclosure, collector, insulator and ionisation chamber bottom
Seat, which is characterized in that the collector is arranged on the inside of ionization chamber enclosure, and the lower part of the ionization chamber enclosure is equipped with ionization
Room pedestal；The collector is installed on by insulator on ionisation chamber pedestal, ionization chamber enclosure, collector and the ionization
Closed ionisation chamber cavity is formed between the pedestal of room, the collection extremely hollow-core construction increases collection surface by hollow-core construction
Product；
The collection is extremely cylindrical, and opening up cylindrical space in the axial direction from collector top forms hollow-core construction；
The outer surface of the collector is equipped with graphite coating；
The inner wall of the ionization chamber enclosure is equipped with graphite coating.
A kind of 2. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the collection
The bottom of pole is connected with signal lead-out wire.
A kind of 3. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the collection
The material of pole is organic glass.
A kind of 4. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the ionization
Chamber enclosure is cylinder, and the ionization chamber enclosure is external electrode.
A kind of 5. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the ionization
The material of chamber enclosure is organic glass.
A kind of 6. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the ionization
The material of room pedestal is aluminium.
A kind of 7. hollow cylindrical collector diagnosis ionisation chamber according to claim 1, which is characterized in that the insulation
The material of body is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144340.5A CN106783503B (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144340.5A CN106783503B (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
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| Publication Number | Publication Date |
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| CN106783503A CN106783503A (en) | 2017-05-31 |
| CN106783503B true CN106783503B (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710144340.5A Active CN106783503B (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459780B (en) * | 2018-12-26 | 2024-09-06 | 中国原子能科学研究院 | Flat ionization chamber for pulse X-ray and gamma-ray dose measurement |
| CN111540663B (en) * | 2020-05-23 | 2025-01-21 | 中国测试技术研究院辐射研究所 | A flat plate ionization chamber for high energy electron beam dose measurement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202533587U (en) * | 2012-03-09 | 2012-11-14 | 中国船舶重工集团公司第七一九研究所 | Ionization chamber type detector used for measurement of strong gamma radiation field under accident conditions |
| CN106449347A (en) * | 2016-10-28 | 2017-02-22 | 中国计量科学研究院 | Ionization chamber device |
| CN206480591U (en) * | 2017-03-10 | 2017-09-08 | 山东中测校准质控技术有限公司 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2894064B1 (en) * | 2005-11-25 | 2009-05-15 | Commissariat Energie Atomique | IONIZATION DEVICE, BETA-EMITTING GAS ACTIVITY CHAIN ACTIVITY CHAIN AND METHOD OF IMPLEMENTING SAID DEVICE |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202533587U (en) * | 2012-03-09 | 2012-11-14 | 中国船舶重工集团公司第七一九研究所 | Ionization chamber type detector used for measurement of strong gamma radiation field under accident conditions |
| CN106449347A (en) * | 2016-10-28 | 2017-02-22 | 中国计量科学研究院 | Ionization chamber device |
| CN206480591U (en) * | 2017-03-10 | 2017-09-08 | 山东中测校准质控技术有限公司 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
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| CN106783503A (en) | 2017-05-31 |
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