CN206020674U - A kind of portable Low background α, β measuring instrument - Google Patents
A kind of portable Low background α, β measuring instrument Download PDFInfo
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- CN206020674U CN206020674U CN201621007965.4U CN201621007965U CN206020674U CN 206020674 U CN206020674 U CN 206020674U CN 201621007965 U CN201621007965 U CN 201621007965U CN 206020674 U CN206020674 U CN 206020674U
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Abstract
The utility model discloses a kind of portable Low background α, β measuring instrument, including main detector, anticoincidence unit module, computer control module, display module and power module, main detector is used for detecting α and/or β rays and forming corresponding signal；Two, roads of α Dao He β passage is connected to after main detector, passage is provided with amplifier and window discriminator, carry out examination effect for α the and/or β ray signals to detecting road；Anticoincidence unit module is connected with after window discriminator, and for removing background ray signal, and then the corresponding α or β rays of output are connected with computer control module, and computer control module is connected with display module communication；Power module is connected with computer control module and main detector.The measuring instrument is easy to carry under the premise of the performance indications for ensureing instrument, while detector can produce unlike signal for different rays, can recognize two kinds of ray informations by a main frame, simplify operation, convenient measurement.
Description
Technical field
The utility model discloses a kind of measuring instrument, particularly a kind of for the portable of detection of radioactive working space
Low background α, β measuring instrument.
Background technology
α, β measuring instrument, for the work top of detection of radioactive working space or laboratory, floor, metope, handss, clothes,
The degree that the surfaces such as footwear are polluted by α and/or beta activity.At present on the market also without portable Low background α, β measuring instrument, and big
Most measuring instruments are all the measuring instruments that some volumes are big, weight is heavy, and its main operational principle is alpha-particle and beta-particle in sample
α, beta scintillator is carried out, as the range of alpha-particle is little, when alpha-particle enters α scintillators, is caused scintillator to light, is produced α letters
Number.Beta-particle is stronger due to penetration capacity, enters beta scintillator, produces signal beta, and two signals are converted to electricity by photomultiplier tube
Pressure signal, by the signal processing of rear end, two kinds of signals is made a distinction, is shown finally by computer or printer.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of portable Low background α, β measuring instrument, the measurement
Instrument can measure dissimilar ray requirement simultaneously, simplify operation, convenient measurement.
In order to solve above-mentioned technical problem, this utility model is accomplished by：
A kind of portable Low background α, β measuring instrument, including main detector, anticoincidence unit module, computer controls mould
Block, display module and power module, the main detector are used for detecting α and/or β rays and forming corresponding signal；
Two, roads of α Dao He β passage is connected to after the main detector, is provided with amplifier and window is discriminated on α Dao He β roads
Other device, main detector are connected with amplifier, and amplifier is followed by fenestrate discriminator, for α the and/or β ray signals to detecting road
Carry out examination effect；
Anticoincidence unit module is connected with after the window discriminator, for removing background ray signal, and then is exported corresponding
α or β rays be connected with computer control module, the communication of computer control module and display module is connected；
The power module is connected with computer control module and main detector, and power module provides work for main detector
High pressure or low pressure needed for making.
Compared with prior art, this utility model has the advantage that：
The claimed measuring instrument of this utility model, disclosure satisfy that under customer premise, just in the performance indications for ensureing instrument
In carrying, while detector can produce unlike signal for different rays, can recognize that two kinds are penetrated by a main frame
Line information, simplifies operation, convenient measurement.
Description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of portable Low background α, β measuring instrument, including main detector, anticoincidence unit module, meter
Calculation machine control module, display module and power module, the main detector are used for detecting α and/or β rays and forming corresponding letter
Number；Two, roads of α Dao He β passage is connected to after the main detector, and α Dao He β are provided with amplifier and window discriminator on road,
Main detector is connected with amplifier, and amplifier is followed by fenestrate discriminator, is discriminated for α the and/or β ray signals to detecting road
Do not act on；Anticoincidence unit module is connected with after the window discriminator, for removing background ray signal, and then is exported corresponding
α or β rays are connected with computer control module, and computer control module is connected with display module communication；The power module with
Computer control module is connected with main detector, and high pressure or low pressure of the power module for needed for main detector offer work.
The main operational principle of the measuring instrument：Alpha-particle and beta-particle in sample carries out α, beta scintillator, due to alpha-particle
Range is little, when alpha-particle enters α scintillators, causes scintillator to light, produces alpha signal, and beta-particle is stronger due to penetration capacity, enters
Enter beta scintillator, produce signal beta.The signal of main detector includes that the background C that α, β and cosmic ray are produced, these three signals are divided to two
Road, i.e., enter α roads all the way, enter β roads all the way.In α roads, threshold value is typically selected between 2～5V, and signal beta and low amplitude are made an uproar
Acoustical signal is difficult to pass through, and the significantly signal C that the signal by a relatively large margin and cosmic ray that only alpha-particle is produced is produced leads to
Cross, subsequently into anticoincidence unit module, cosmic ray background C is removed through anticoincidence, export alpha signal；Enter α, β and the C in β roads
Signal, due to entering a window discriminator, i.e., only more than in β L (low threshold) and signal and Luo β roads less than β H (high threshold)
Cosmic ray is shaped to enter anticoincidence unit module, removes cosmic ray background C through anticoincidence, exports signal beta.α Dao He β roads
Output signal, through the process of computer control module, is shown by display screen in real time or prints result by printer.
The above is only embodiment of the present utility model, states again, for the ordinary skill people of the art
For member, on the premise of without departing from this utility model principle, some improvement can also be carried out to this utility model, these improvement
Also list in this utility model scope of the claims.
Claims (1)
1. a kind of portable Low background α, β measuring instrument, it is characterised in that：Including main detector, anticoincidence unit module, calculating
Machine control module, display module and power module, the main detector are used for detecting α and/or β rays and forming corresponding letter
Number；
Two, roads of α Dao He β passage is connected to after the main detector, is provided with amplifier and window is screened on α Dao He β roads
Device, main detector are connected with amplifier, and amplifier is followed by fenestrate discriminator, are entered for α the and/or β ray signals to detecting road
Row examination is acted on；
Anticoincidence unit module is connected with after the window discriminator, for removing background ray signal, and then export corresponding α or
β rays are connected with computer control module, and computer control module is connected with display module communication；
The power module is connected with computer control module and main detector, and power module is main detector offer work institute
The high pressure for needing or low pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621007965.4U CN206020674U (en) | 2016-08-30 | 2016-08-30 | A kind of portable Low background α, β measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621007965.4U CN206020674U (en) | 2016-08-30 | 2016-08-30 | A kind of portable Low background α, β measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN206020674U true CN206020674U (en) | 2017-03-15 |
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| CN201621007965.4U Active CN206020674U (en) | 2016-08-30 | 2016-08-30 | A kind of portable Low background α, β measuring instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144869A (en) * | 2017-06-19 | 2017-09-08 | 中广核久源（成都）科技有限公司 | A kind of tritium surface contamination survey meter |
| CN107490804A (en) * | 2017-06-23 | 2017-12-19 | 中核控制系统工程有限公司 | Intelligent two-way Low background α β measuring instruments |
| CN108226987A (en) * | 2017-11-27 | 2018-06-29 | 中核控制系统工程有限公司 | A kind of integration Low background α, β measuring instrument |
| CN109557573A (en) * | 2018-11-29 | 2019-04-02 | 中广核久源（成都）科技有限公司 | A kind of digitlization α/β ray discriminating method |
-
2016
- 2016-08-30 CN CN201621007965.4U patent/CN206020674U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144869A (en) * | 2017-06-19 | 2017-09-08 | 中广核久源（成都）科技有限公司 | A kind of tritium surface contamination survey meter |
| CN107490804A (en) * | 2017-06-23 | 2017-12-19 | 中核控制系统工程有限公司 | Intelligent two-way Low background α β measuring instruments |
| CN108226987A (en) * | 2017-11-27 | 2018-06-29 | 中核控制系统工程有限公司 | A kind of integration Low background α, β measuring instrument |
| CN109557573A (en) * | 2018-11-29 | 2019-04-02 | 中广核久源（成都）科技有限公司 | A kind of digitlization α/β ray discriminating method |
| CN109557573B (en) * | 2018-11-29 | 2022-07-15 | 中广核久源（成都）科技有限公司 | Digital alpha/beta ray discrimination method |
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