CN101158723A - End window ionization chamber - Google Patents
End window ionization chamber Download PDFInfo
- Publication number
- CN101158723A CN101158723A CNA2006100028977A CN200610002897A CN101158723A CN 101158723 A CN101158723 A CN 101158723A CN A2006100028977 A CNA2006100028977 A CN A2006100028977A CN 200610002897 A CN200610002897 A CN 200610002897A CN 101158723 A CN101158723 A CN 101158723A
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- ionization chamber
- window
- passive electrode
- insulator
- utmost point
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Abstract
The invention discloses an ionization chamber with an end cover of 600cm<SUP>3</SUP>, which is used for the measurement of dosage rate between 1 and 30 Gy/h. The ionization chamber takes a structure of a cylinder, and an incidence window is arranged in the top, fabroil is taken as the host material of the ionization chamber, and the internal wall of the ionization chamber is coated with graphite, so the ionization chamber has adequate structural intensity. Windows of the ionization chamber are made of aluminized mylar, while the electron collector is made of aluminum. The polar body takes a shape of cylinder, and the top takes a shape of semisphere; the end cover is made of synthetic glass and is detachable, and can be matched with the end covers with different thickness, thus being used for the measurement of different energy ranges. The protecting electrode box adopts integrated design, which is favorable for maintenance.
Description
Technical field
The present invention is a kind of 600cm
3End window ionization chamber belongs to ionising radiation metering field.Can be widely used in the measurement in nuclear facilities radiation protection fields such as radioactivity measurement verification calibration department, nuclear power plant.
Background technology
At present for protection level X, γ reference radiation, still with the air kerma rate as original fundamental quantity, and reference instrument mainly still is made up of the ionization chamber of different shape and volume, and that uses always mainly contains finger-type, cylindrical and sphere etc., and volume has 0.6cm
3, 30 (35) cm
3, 600cm
3, 1000cm
3Deng.In these ionization chambers, from practical standpoint, the 600cm3 end window ionization chamber has very big potentiality.Domestic protection level X, γ reference radiation dosage experiments chamber, its common dose rate are 1～30mGy/h (corresponding to hundreds of mCi～several Ci137Cs source), just are being fit to 600cm
3The measurement of ionization chamber; End window ionization chamber is easy to processing, assembling and maintenance with respect to other shape ionization chambers; In addition, when adopting replaceable balance end cap, end window ionization chamber also can be used for the measurement of lower energy photon and the measurement of β dosage.
The domestic 600cm that do not develop at present
3The serial ionization chamber that the report of end window ionization chamber, the measurement of protection level gamma dose rate use German PTW to produce is more, but does not have 600cm in its serial ionization chamber
3End window ionization chamber.
Do not found relevant 600cm in the patent at home and abroad
3The patent of end window ionization chamber.
Summary of the invention
The purpose of this invention is to provide a kind of 600cm
3End window ionization chamber is used for the measurement of dose rate 1～30mGy/h.
The technical solution used in the present invention: ionization chamber mainly is made of main body, window, passive electrode, end cap, lead-in wire, protection utmost point box, insulator etc., adopts cylindrical structural, and entrance window is positioned at the top.
The present invention is made of main body (1), window (2), passive electrode (3), end cap (4), cable (5), protection utmost point box (6), insulator (7), adopts cylindrical structural, and ionization chamber main body (1) material is for adding the cloth bakelite; Window (2), end cap (4) adopt demountable structure to be fixed on the main body (1), and window (2) adopts the calorize mylar, and end cap (4) is a pmma material; Passive electrode (3) is an aluminum, and polar body is cylindrical, and the top is a semisphere; Passive electrode (3), cable (5), insulator (7) are positioned at protection utmost point box (6), cable (5), insulator (7), protection utmost point box (6) be fixed on passive electrode (3) around form one with ionization chamber.
Main body of the present invention (1) material is for adding the cloth bakelite, and inwall scribbles graphite, has enough structural strengths; Window (2) adopts the calorize mylar, and it can conduct electricity, and forms one with passive electrode (3); Insulator (7) is positioned at protection utmost point box (6), opens bonnet, can directly wholely extract out.
End cap of the present invention (4) is a pmma material, adopts demountable structure, can join the end cap of different-thickness, is used for the measurement of different-energy scope.
Protection utmost point box of the present invention (6) adopts integrated design, helps maintenance.
Protection level X of the present invention, γ reference radiation common dose rate are 1～30mGy/h (corresponding to hundreds of mCi～several Ci137Cs source), just are being fit to 600cm
3The measurement of ionization chamber; End window ionization chamber is easy to processing, assembling and maintenance with respect to other shape ionization chambers; In addition, when adopting replaceable balance end cap, end window ionization chamber also can be used for the measurement of lower energy photon and the measurement of β dosage.Has higher promotional value.
Description of drawings
Fig. 1 ionization chamber structural drawing
The 1-main body; The 2-window; The 3-passive electrode; The 4-end cap; The 5-cable; 6-protection utmost point box; The 7-insulator.
Embodiment
Example 1
This ionization chamber is a cylindrical structural, and as shown in Figure 1, physical dimension is 90mm * Φ 125mm, and entrance window is positioned at the top, the about 620cm of collected volume
3Ionization chamber mainly is made of main body (1), window (2), passive electrode (3), end cap (4), cable (5), protection utmost point box (6), insulator (7), ionization chamber main body (1) material is for adding the cloth bakelite, inwall scribbles graphite, and thickness 4mm has enough structural strengths; Ionization chamber window (2) adopts the calorize mylar, and it can conduct electricity, and forms one with passive electrode (3); Passive electrode (3) is an aluminum, and polar body is cylindrical, and the top is a semisphere; End cap (4) is a pmma material, adopts demountable structure, can join the end cap of different-thickness, is used for the measurement of different-energy scope; Φ 6 screened cables that cable (5) adopts German PTW to produce, the M joint; Protection utmost point box (6) adopts integrated design, helps maintenance; Insulator (7) is a politef.
Example 2
Ionization chamber window (2), end cap (4) adopt demountable structure to be separately fixed on the main body (1); cable (5), insulator (7), protection utmost point box (6) be fixed on passive electrode (3) around form one with ionization chamber, during work ionization chamber integral body is placed on the data of gathering on the irradiation support of irradiation unit and returns computing machine by cable (5).
Claims (4)
1. an end window ionization chamber is characterized in that ionization chamber is made of main body (1), window (2), passive electrode (3), end cap (4), cable (5), protection utmost point box (6), insulator (7), adopts cylindrical structural, and ionization chamber main body (1) material is for adding the cloth bakelite; Window (2), end cap (4) adopt demountable structure to be fixed on the main body (1), and window (2) adopts the calorize mylar, and end cap (4) is a pmma material; Passive electrode (3) is an aluminum, and polar body is cylindrical, and the top is a semisphere; Passive electrode (3), cable (5), insulator (7) are positioned at protection utmost point box (6), cable (5), insulator (7), protection utmost point box (6) be fixed on passive electrode (3) around form one with ionization chamber.
2. ionization chamber according to claim 1 is characterized in that main body (1) material adds cloth bakelite inwall and scribbles graphite.
3. ionization chamber according to claim 1 is characterized in that window (2) adopts the calorize mylar, forms one with passive electrode (3).
4. ionization chamber according to claim 1 is characterized in that insulator (7) is positioned at protection utmost point box (6), opens bonnet, can directly wholely extract out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100028977A CN101158723A (en) | 2006-02-10 | 2006-02-10 | End window ionization chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100028977A CN101158723A (en) | 2006-02-10 | 2006-02-10 | End window ionization chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101158723A true CN101158723A (en) | 2008-04-09 |
Family
ID=39306877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100028977A Pending CN101158723A (en) | 2006-02-10 | 2006-02-10 | End window ionization chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101158723A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472475A (en) * | 2012-06-08 | 2013-12-25 | 中国原子能科学研究院 | Transmission-type monitoring ionization chamber suitable for low-energy X-ray measurement |
| CN104090292A (en) * | 2014-06-13 | 2014-10-08 | 中国科学院近代物理研究所 | Position sensitive detector for higher energy heavy ion beam diagnosis |
| CN106842276A (en) * | 2017-03-10 | 2017-06-13 | 山东中测校准质控技术有限公司 | A kind of orifice-plate type collector flat board diagnoses ionisation chamber |
| CN108594287A (en) * | 2018-06-29 | 2018-09-28 | 天津敬慎坊科技有限公司 | A kind of slim X-ray beam ionisation chamber |
| CN109459780A (en) * | 2018-12-26 | 2019-03-12 | 中国原子能科学研究院 | It is a kind of for pulse X, the plane ionization chamber of gamma-rays dosage measurement |
| CN115488989A (en) * | 2022-09-27 | 2022-12-20 | 广西壮族自治区林业科学研究院 | Fiberboard and preparation method thereof |
-
2006
- 2006-02-10 CN CNA2006100028977A patent/CN101158723A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472475A (en) * | 2012-06-08 | 2013-12-25 | 中国原子能科学研究院 | Transmission-type monitoring ionization chamber suitable for low-energy X-ray measurement |
| CN103472475B (en) * | 2012-06-08 | 2015-09-30 | 中国原子能科学研究院 | A kind of transmission-type monitor ionization chamber being suitable for low energy X ray and measuring |
| CN104090292A (en) * | 2014-06-13 | 2014-10-08 | 中国科学院近代物理研究所 | Position sensitive detector for higher energy heavy ion beam diagnosis |
| CN106842276A (en) * | 2017-03-10 | 2017-06-13 | 山东中测校准质控技术有限公司 | A kind of orifice-plate type collector flat board diagnoses ionisation chamber |
| CN108594287A (en) * | 2018-06-29 | 2018-09-28 | 天津敬慎坊科技有限公司 | A kind of slim X-ray beam ionisation chamber |
| CN109459780A (en) * | 2018-12-26 | 2019-03-12 | 中国原子能科学研究院 | It is a kind of for pulse X, the plane ionization chamber of gamma-rays dosage measurement |
| CN115488989A (en) * | 2022-09-27 | 2022-12-20 | 广西壮族自治区林业科学研究院 | Fiberboard and preparation method thereof |
| CN115488989B (en) * | 2022-09-27 | 2023-12-22 | 广西壮族自治区林业科学研究院 | Fiberboard and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080409 |