CN115356547A - Ionization chamber sensor and measuring method thereof - Google Patents
Ionization chamber sensor and measuring method thereof Download PDFInfo
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- CN115356547A CN115356547A CN202210969515.7A CN202210969515A CN115356547A CN 115356547 A CN115356547 A CN 115356547A CN 202210969515 A CN202210969515 A CN 202210969515A CN 115356547 A CN115356547 A CN 115356547A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
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Abstract
The invention discloses an ionization chamber sensor and a measuring method thereof, and the measuring method of the ionization chamber sensor comprises an outer high-voltage electrode, a collector and an inner high-voltage electrode which are coaxially sleeved from outside to inside in sequence, wherein one end of the outer high-voltage electrode and one end of the inner high-voltage electrode are connected into a whole; collecting low-dose ionization signals through the matching of the outer high-voltage electrode and the collector, and collecting high-dose ionization signals through the matching of the inner high-voltage electrode and the collector; the low dose ionization signal and the high dose ionization signal are then passed through a collector to output a weak current. It has solved the lower problem of detection sensitivity of current ionization chamber.
Description
Technical Field
The invention belongs to the technical field of ionization chambers, and particularly relates to an ionization chamber sensor and a measuring method thereof.
Background
The ionization chamber is a detector for measuring ionizing radiation by utilizing the ionization effect of the ionizing radiation, the conventional ionization chamber comprises a high-voltage electrode, and a collector is arranged in the high-voltage electrode, during measurement, gas in the collector cannot be used, so that the partial sensitive volume in the ionization chamber is wasted, and the detection sensitivity of the whole ionization chamber is lower.
Disclosure of Invention
The invention aims to provide an ionization chamber sensor and a measuring method thereof, which are used for solving the problem that part of sensitive volume of the existing ionization chamber is wasted.
The first technical scheme adopted by the invention is as follows: a measurement method of an ionization chamber sensor comprises an outer high-voltage electrode, a collector and an inner high-voltage electrode which are coaxially sleeved from outside to inside in sequence, wherein one ends of the outer high-voltage electrode and the inner high-voltage electrode are connected into a whole; collecting low-dose ionization signals through the matching of the outer high-voltage electrode and the collector, and collecting high-dose ionization signals through the matching of the inner high-voltage electrode and the collector; the low dose ionization signal and the high dose ionization signal are then passed through a collector to output a weak current.
The second technical scheme adopted by the invention is as follows: an ionization chamber sensor comprises an outer high-voltage pole which is a hollow barrel body; the top of the outer high-voltage pole is provided with a collector in a penetrating way, the collector comprises a barrel and a central stage which are coaxially connected, the barrel is positioned in the outer high-voltage pole, the central stage is arranged at the top of the outer high-voltage pole in a penetrating way, and an insulator is sleeved outside the central stage and at the position which is intersected with the outer high-voltage pole; the bottom of the outer high-voltage pole extends towards the inside of the cylinder body to form an inner high-voltage pole, and the inner high-voltage pole is a hollow cylinder body;
the collector is used for being matched with the outer high-voltage electrode and collecting low-dose ionization signals; and the ionization detector is also used for being matched with an inner high-voltage pole to collect high-dose ionization signals.
Furthermore, two insulating pieces are coaxially sleeved outside the center stage and between the cylinder and the outer high-voltage electrode, and a protection ring is coaxially arranged between the two insulating pieces.
The invention has the beneficial effects that: according to the ionization chamber, the inner high-voltage electrode is additionally arranged in the collector, so that the effective ionization volume in the ionization chamber is increased under the same volume, the lower limit of measurement is lower, and the detection sensitivity of the whole ionization chamber is improved.
Drawings
Fig. 1 is a schematic structural diagram of an ionization chamber sensor according to the present invention.
The high-voltage power supply comprises an outer high-voltage pole 1, a collector 2, a cylinder 21, a center stage 22, an inner high-voltage pole 3, an insulator 4, an insulator 5 and a protection ring 6.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a measuring method of an ionization chamber sensor, the ionization chamber sensor comprises an outer high-voltage electrode 1, a collector 2 and an inner high-voltage electrode 3 which are coaxially sleeved from outside to inside in sequence, and one ends of the outer high-voltage electrode 1 and the inner high-voltage electrode 3 are connected into a whole; the low-dose ionization signals are collected through the matching of the outer high-voltage electrode 1 and the collector 2, and the high-dose ionization signals are collected through the matching of the inner high-voltage electrode 3 and the collector 2; the low dose ionization signal and the high dose ionization signal are then passed through the collector 2 to output a weak current.
An inner high-voltage electrode 3 is additionally arranged in the collector 2, low-dose ionization signals are collected through the matching of the outer high-voltage electrode 1 and the collector 2, and high-dose ionization signals are collected through the matching of the inner high-voltage electrode 3 and the collector 2. Then the ionization signal is output to weak current through the collector 2 for subsequent electronic processing. According to the ionization chamber sensor, the inner high-voltage electrode is additionally arranged in the collector, so that gas detection between the inner high-voltage electrode and the collector is increased, and the gas sensitive volume is improved.
As shown in fig. 1, the present invention also provides an ionization chamber sensor, which comprises an outer high voltage electrode 1, which is a hollow barrel body; the collector 2 is arranged at the top of the outer high-voltage electrode 1 in a penetrating mode, the collector 2 comprises a cylinder 21 and a center stage 22 which are coaxially connected, the cylinder 21 is located inside the outer high-voltage electrode 1, the center stage 22 is arranged at the top of the outer high-voltage electrode 1 in a penetrating mode, and an insulator 4 is sleeved outside the center stage 22 and at the position where the center stage and the outer high-voltage electrode 1 intersect; the bottom of the outer high-voltage pole 1 extends towards the interior of the cylinder 21 to form an inner high-voltage pole 3, and the inner high-voltage pole 3 is a hollow cylinder body;
the collector 2 is used for being matched with the outer high-voltage electrode 1 and collecting low-dose ionization signals; and is also used for cooperating with the inner high voltage electrode 3 to collect high dose ionization signals.
The inner high-voltage electrode 3 is additionally arranged in the cylinder 21 of the collector 2, so that gas between the outer high-voltage electrode 1 and the central electrode 2 can be detected, gas detection between the inner high-voltage electrode 3 and the collector 2 is increased, and the gas sensitive volume is improved.
In some embodiments, two insulators 5 are coaxially sleeved outside the center stage 22 and between the barrel 21 and the outer high voltage pole 1, and the protection ring 6 is coaxially disposed between the two insulators 5. The protection ring 6 is used for guiding out weak current, and the two sides of the protection ring are provided with the insulating parts 5 which are used for isolating the high-voltage pole and the collector 2 and supporting the space between the external high-voltage pole 1 and the cylinder 21, so that the stability of the whole structure can be enhanced and the shock of the use environment can be responded.
According to the ionization chamber, the inner high-voltage electrode is additionally arranged in the collector, and the effective ionization volume in the ionization chamber is increased under the same volume, so that the lower limit of measurement is lower, and the detection sensitivity of the whole ionization chamber is improved.
Claims (3)
1. The measuring method of the ionization chamber sensor is characterized by comprising an outer high-voltage electrode (1), a collector (2) and an inner high-voltage electrode (3) which are coaxially sleeved from outside to inside in sequence, wherein one ends of the outer high-voltage electrode (1) and the inner high-voltage electrode (3) are connected into a whole; low-dose ionization signals are collected through the matching of the outer high-voltage electrode (1) and the collector (2), and high-dose ionization signals are collected through the matching of the inner high-voltage electrode (3) and the collector (2); then the low-dose ionization signal and the high-dose ionization signal output weak current through the collector (2).
2. An ionization chamber sensor, characterized in that, based on the measurement method of the ionization chamber sensor of claim 1, it comprises an outer high voltage pole (1) which is a hollow barrel; the collector (2) is arranged at the top of the outer high-voltage electrode (1) in a penetrating mode, the collector (2) comprises a barrel (21) and a center stage (22) which are coaxially connected, the barrel (21) is located inside the outer high-voltage electrode (1), the center stage (22) is arranged at the top of the outer high-voltage electrode (1) in a penetrating mode, and an insulator (4) is sleeved outside the center stage (22) and at the position, intersected with the outer high-voltage electrode (1), of the center stage; an inner high-voltage electrode (3) is arranged at the bottom of the outer high-voltage electrode (1) and extends towards the inside of the cylinder body (21), and the inner high-voltage electrode (3) is a hollow cylinder body; the collector (2) is used for being matched with the outer high-voltage electrode (1) and collecting low-dose ionization signals; and is also used for matching with an inner high voltage pole (3) and collecting high-dose ionization signals.
3. An ionization chamber sensor according to claim 2, characterized in that two insulating members (5) are coaxially arranged outside the central stage (22) and between the cylinder (21) and the outer high voltage pole (1), and a guard ring (6) is coaxially arranged between the two insulating members (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210969515.7A CN115356547A (en) | 2022-08-12 | 2022-08-12 | Ionization chamber sensor and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210969515.7A CN115356547A (en) | 2022-08-12 | 2022-08-12 | Ionization chamber sensor and measuring method thereof |
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| CN202210969515.7A Pending CN115356547A (en) | 2022-08-12 | 2022-08-12 | Ionization chamber sensor and measuring method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201837727U (en) * | 2010-02-11 | 2011-05-18 | 杨怀元 | High-sensitivity wide-range detector for tritium testing ionization chamber |
| CN105629286A (en) * | 2016-01-28 | 2016-06-01 | 中国计量科学研究院 | Ionization chamber used for measuring ambient dose equivalent |
| CN110148550A (en) * | 2019-06-17 | 2019-08-20 | 陕西卫峰核电子有限公司 | High range area radiation monitor ionization chamber after a kind of accident |
| CN110416058A (en) * | 2019-08-02 | 2019-11-05 | 陕西卫峰核电子有限公司 | High range area radiation monitor ionization chamber seal and assemble method after a kind of accident |
| CN214473628U (en) * | 2021-01-27 | 2021-10-22 | 湖南省核工业中心实验室 | High-pressure ionization chamber |
| CN114019558A (en) * | 2021-09-30 | 2022-02-08 | 中国船舶重工集团公司第七一九研究所 | Wide-range gamma dose rate measurement ionization chamber |
-
2022
- 2022-08-12 CN CN202210969515.7A patent/CN115356547A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201837727U (en) * | 2010-02-11 | 2011-05-18 | 杨怀元 | High-sensitivity wide-range detector for tritium testing ionization chamber |
| CN105629286A (en) * | 2016-01-28 | 2016-06-01 | 中国计量科学研究院 | Ionization chamber used for measuring ambient dose equivalent |
| CN110148550A (en) * | 2019-06-17 | 2019-08-20 | 陕西卫峰核电子有限公司 | High range area radiation monitor ionization chamber after a kind of accident |
| CN110416058A (en) * | 2019-08-02 | 2019-11-05 | 陕西卫峰核电子有限公司 | High range area radiation monitor ionization chamber seal and assemble method after a kind of accident |
| CN214473628U (en) * | 2021-01-27 | 2021-10-22 | 湖南省核工业中心实验室 | High-pressure ionization chamber |
| CN114019558A (en) * | 2021-09-30 | 2022-02-08 | 中国船舶重工集团公司第七一九研究所 | Wide-range gamma dose rate measurement ionization chamber |
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