CN202267746U - Detection system for isotope radon-220 of radon - Google Patents
Detection system for isotope radon-220 of radon Download PDFInfo
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- CN202267746U CN202267746U CN2011203170082U CN201120317008U CN202267746U CN 202267746 U CN202267746 U CN 202267746U CN 2011203170082 U CN2011203170082 U CN 2011203170082U CN 201120317008 U CN201120317008 U CN 201120317008U CN 202267746 U CN202267746 U CN 202267746U
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- radon
- particle detector
- alpha
- isotope
- detection system
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Abstract
The utility model discloses a detection system for the isotope radon-220 of radon, comprising an intake filter system, an alpha-particle detector, a data acquisition and analysis unit and a power supply which are orderly connected, wherein the intake filter system comprises an air filter system and a small aerosol filter system; the alpha-particle detector is a hemispherical cylinder cavity made of plastic, a planar aurum-silicon (Au-Si) surface barrier type alpha-particle detector is disposed therein, and the outer wall of the cavity is connected with a high-voltage device; and the data acquisition and analysis unit comprises a charge-sensitive amplifier, an energy multi-channel analyzer and a particle count operation record system. The detection system for the isotope radon-220 of radon disclosed by the utility model increases the collection efficiency of radon and enhances the sensitivity and accuracy of detection via the arrangement of the intake filter system; and the planar Au-Si surface barrier type alpha-particle detector in the alpha-particle detector ensures high detection efficiency and high energy resolution on alpha-ions. The data acquisition and analysis unit can realize the automation of monitoring, thereby facilitating unified management and analysis for data.
Description
Technical field
The utility model relates to a kind of detecting instrument of radioelement, relates in particular to a kind of detection system of radon isotope radon-220.
Background technology
Radon is the gaseous state radioactive nuclide in the natural radioactivity decay series, in case be inhaled into human body, can damage and have the human lung and bring out the possible of lung cancer.So, when detecting, can use the radon detection instrument usually, existing radon detection instrument when measuring, need the long time, and measuring stability is relatively poor owing to receive the influence of factors such as its sensitivity and radon pollution level.
The utility model content
The purpose of the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of detection system of highly sensitive, a kind of radon isotope radon-220 that response speed is fast, easy to operate is provided.
The technical scheme of the utility model is: a kind of detection system of radon isotope radon-220 comprises the inlet air filtration system, alpha particle detector, data collection and analysis unit and the power supply that are connected successively.
Wherein, said inlet air filtration system comprises air filtering system and small gasoloid filtering system, is provided with the constant current aspiration pump between said air filtering system and the small gasoloid filtering system.
Wherein, said alpha particle detector is a plastics semisphere cylindrical cavity, in be provided with plane gold silicon surface barrier type alpha particle detector, the cavity outer wall is connected with high-tension unit.
Wherein, said data collection and analysis unit comprises charge amplifier, energy multichannel analyzer, population operation note system.
Wherein, said power supply is accumulator or alternating current input.
The utility model is through the setting of inlet air filtration system; Increased the collection efficiency of radon; Improved detection sensitivity and accuracy, the plane gold silicon surface barrier type alpha particle detector in the alpha particle detector has guaranteed high detection efficiency and high energy resolution to the α ion simultaneously.The robotization of monitoring can be realized in the data collection and analysis unit, is convenient to the unified management and the analysis of data.
Description of drawings
Fig. 1 is the block diagram of the utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is further specified.Should be understood that following examples only are used to the utility model is described but not the scope that is used to limit the utility model.
Referring to Fig. 1, the detection system of a kind of radon isotope radon-220 that the utility model provided comprises being connected successively
The inlet air filtration system, said inlet air filtration system comprises air filtering system 1 and small gasoloid filtering system 3.Air filtering system 1 is used for the dust of filtered air, and small gasoloid filtering system 3 is used to filter out the small gasoloid greater than 1 μ m.Be provided with constant current aspiration pump 2 between said air filtering system 1 and the small gasoloid filtering system 3, constant current aspiration pump 2 is used to guarantee that the volume of extraction flow and detection system is complementary, and makes stability of flow.
Alpha particle detector 4; Said alpha particle detector 4 is the main body with the plastics semisphere cylindrical cavity of the volume that is about 0.5L; Be provided with air inlet/outlet; The inner plane gold silicon surface barrier type alpha particle detector of placing, the cavity outer wall applies high voltage, guarantees that tested radon 222 (Rn222) and the decay daughter polonium 218 (Po218) of radon 220 (Rn220) and the α particle of polonium 216 (Po216) are collected into gold silicon surface barrier N-type semiconductor N alpha particle detector surface.Utilize polonium 218 (Po218) different with the alpha-particle energy of polonium 216 (Po216) (energy differs about 1/10); Utilize high detection efficiency and the high energy resolution of gold silicon surface barrier semiconductor detector to the α ion; Adopt nuclear electronics alpha energy spectrum multichannel technique (more than 200 roads), the α particle of polonium 218 (Po218) with polonium 216 (Po216) separated, reach record detection purpose respectively.
Charge amplifier 5, polonium 218 (Po218) and the electronic signal that the α particle that polonium 216 (Po216) decay is radiated produces on gold silicon surface barrier N-type semiconductor N alpha particle detector are amplified by high power.
Energy multichannel analyzer 6, polonium 218 (Po218) is respectively 6.00Mev and 6.7Mev with the alpha-particle energy of polonium 216 (Po216) decay radiation, and the above energy multichannel analyzer in 200 roads is enough to make both separately, respectively record.
Population operation note system 7, register system software can be according to the needs of testing, and setting measurement cycle, cycle index, printing, signal output, storage, selection polonium 218 (Po218) or polonium 216 (Po216) show WV, humiture etc.
Power supply 8, said power supply can adopt accumulator or alternating current input.
Claims (5)
1. the detection system of a radon isotope radon-220 is characterized in that: comprise the inlet air filtration system, alpha particle detector, data collection and analysis unit and the power supply that are connected successively.
2. the detection system of a kind of radon isotope radon-220 according to claim 1; It is characterized in that: said inlet air filtration system comprises air filtering system and small gasoloid filtering system, is provided with the constant current aspiration pump between said air filtering system and the small gasoloid filtering system.
3. the detection system of a kind of radon isotope radon-220 according to claim 1; It is characterized in that: said alpha particle detector is a plastics semisphere cylindrical cavity; In be provided with plane gold silicon surface barrier type alpha particle detector, the cavity outer wall is connected with high-tension unit.
4. the detection system of a kind of radon isotope radon-220 according to claim 1 is characterized in that: said data collection and analysis unit comprises charge amplifier, energy multichannel analyzer, population operation note system.
5. the detection system of a kind of radon isotope radon-220 according to claim 1 is characterized in that: said power supply is accumulator or alternating current input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203170082U CN202267746U (en) | 2011-08-26 | 2011-08-26 | Detection system for isotope radon-220 of radon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203170082U CN202267746U (en) | 2011-08-26 | 2011-08-26 | Detection system for isotope radon-220 of radon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267746U true CN202267746U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011203170082U Expired - Fee Related CN202267746U (en) | 2011-08-26 | 2011-08-26 | Detection system for isotope radon-220 of radon |
Country Status (1)
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| CN (1) | CN202267746U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570040A (en) * | 2015-01-21 | 2015-04-29 | 中国科学院上海应用物理研究所 | On-line monitoring system and method for radioactive gas and radioactive aerosol |
| CN109254313A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109254314A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109307880A (en) * | 2018-11-15 | 2019-02-05 | 衡阳师范学院 | Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109655859A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655858A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655857A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
-
2011
- 2011-08-26 CN CN2011203170082U patent/CN202267746U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570040A (en) * | 2015-01-21 | 2015-04-29 | 中国科学院上海应用物理研究所 | On-line monitoring system and method for radioactive gas and radioactive aerosol |
| CN109254313A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109254314A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109307880A (en) * | 2018-11-15 | 2019-02-05 | 衡阳师范学院 | Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109655859A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655858A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655857A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |