CN110018512A - A kind of portable multi-function activity meter - Google Patents
A kind of portable multi-function activity meter Download PDFInfo
- Publication number
- CN110018512A CN110018512A CN201910128046.4A CN201910128046A CN110018512A CN 110018512 A CN110018512 A CN 110018512A CN 201910128046 A CN201910128046 A CN 201910128046A CN 110018512 A CN110018512 A CN 110018512A
- Authority
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- Prior art keywords
- gamma
- portable multi
- activity meter
- function activity
- shield
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000694 effects Effects 0.000 title claims abstract description 30
- 238000005259 measurement Methods 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 229910052722 tritium Inorganic materials 0.000 claims abstract description 19
- 238000001730 gamma-ray spectroscopy Methods 0.000 claims abstract description 12
- 238000007405 data analysis Methods 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 18
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 claims description 3
- XKUYOJZZLGFZTC-UHFFFAOYSA-K lanthanum(iii) bromide Chemical compound Br[La](Br)Br XKUYOJZZLGFZTC-UHFFFAOYSA-K 0.000 claims description 3
- -1 photomultiplier tube Substances 0.000 claims description 3
- 235000009518 sodium iodide Nutrition 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000002285 radioactive effect Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000009206 nuclear medicine Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- LBDSXVIYZYSRII-IGMARMGPSA-N alpha-particle Chemical compound [4He+2] LBDSXVIYZYSRII-IGMARMGPSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005567 liquid scintillation counting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2008—Measuring radiation intensity with scintillation detectors using a combination of different types of scintillation detectors, e.g. phoswich
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
Abstract
The invention discloses a kind of portable multi-function activity meters, including tritium carbon and totalαtotalβ measuring system, gamma-spectrometry system and data analysis unit, the tritium carbon and totalαtotalβ measuring system include the first shield, detector, measure storehouse and display unit, the measurement storehouse is arranged inside the first shield, the detector setting is in measurement storehouse bottom side, first shield top is equipped with lead screen shutter, the display unit is arranged on lead screen shutter, the gamma-spectrometry system includes secondary shielding body and gamma detector, secondary shielding body top is equipped with vitriol chamber door, the present invention has high sensitivity, portability, it is multi-functional, it is easy to operate, the advantages that strong applicability, total α of different types of multicore element can be measured, total β, gamma activity, the activity of tritium and carbon, really realize a tractor serves several purposes, Different sample specifications can be measured.
Description
Technical field
The invention belongs to technical field of radioactive detection, and in particular to a kind of portable multi-function activity meter.
Background technique
Radioactive activity is to measure radionuclide spontaneous variation (nuclear transition) occurs in technical field of radioactive detection
Physical quantity.Liquid flashing counting method is the method for direct measurement radioactive activity.
Scintillation counter refers to be caused scintillator to shine and passes through photoelectric device recording ray intensity using ray or particle
With the detection device of energy.Scintillation counter is made of scintillator, light collecting system and photoelectric device three parts.By photoelectric device
The electric pulse of output enters particle data by prime electronic system (amplification, forming, examination etc.) and obtains system, line number of going forward side by side
According to processing and analysis.The principle of liquid scintillation counting, it is radionuclide solution and liquid that main point, which is scintillation source,
Scintillator is uniformly mixed.Therefore it is absorbed its advantages are: avoiding and being originated from；The dead time of number system is smaller；To low energy β
Particle and α particle have higher control to survey efficiency.It can measure various emitter radionuclides, also can measure electronics and capture core
Element.
The nuclear medicine technology in industry is to utilize non-natural isotope (including radioactive isotope and the same position of stability at present
Element) and core ray carry out biomedical research and disease treatment a technology.Nuclear medicine technology experienced over half a century
Development, it is now very widely used, and as the disease probability that obtains of cancer improves, the development of Nuclear Medicine Dept is getting faster.
Therefore it needs to develop more monitoring devices dedicated for nuclear medicine ash, this equipment is developed under the premise of being namely based on this
Multi-functional activity meter.
Summary of the invention
The purpose of the present invention is to provide a kind of portable multi-function activity meters, on the basis of liquid scintillation counter
On, the analytical technology of TDCR is increased, while increasing total α and total β resolution function, gamma activity measurement list can be matched
Member, sample type select different sizes and type, all count results and gamma-spectrometric data real-time display as needed, conveniently
The test process of automation, can interrupt and edit and data output optional function.With high sensitivity, portability is multi-functional,
It is easy to operate, the advantages that strong applicability, the work of the total α, total β, gamma activity, tritium and carbon of different types of multicore element can be measured
Degree, really realizes a tractor serves several purposes, can measure different sample specifications, as wipe samples, water sample, pedotheque and food are surveyed
All radioactive isotope measurements are measured in amount and life science, to solve the problems mentioned in the above background technology.
To achieve the above object, present invention employs following technical solutions:
A kind of portable multi-function activity meter, including tritium carbon and totalαtotalβ measuring system, gamma-spectrometry system sum number
According to analytical unit, the tritium carbon and totalαtotalβ measuring system include the first shield, detector, measurement storehouse and display unit, institute
It states measurement storehouse to be arranged inside the first shield, the detector setting is in measurement storehouse bottom side, first shield
Portion is equipped with lead screen shutter, and the display unit is arranged on lead screen shutter, and the gamma-spectrometry system includes secondary shielding
Body and gamma detector, secondary shielding body top are equipped with vitriol chamber door.
Preferably, the secondary shielding body includes yellow lead layer, organic plastics layer and lead layer, the Huang lead layer, organic modeling
The bed of material and lead layer are set gradually from the inside to the outside.
Preferably, the gamma detector by scintillation crystal, photomultiplier tube, base bleeder circuit and before put and form.
Preferably, the data analysis unit is PC machine, and PC machine includes host, display and keyboard.
Preferably, the thickness of first shield is not less than 50mm.
Preferably, the diameter dimension for the photomultiplier tube that the gamma detector uses is not less than 50mm.
Preferably, the tritium carbon and totalαtotalβ measuring system use single channel or twin-channel multichannel analyzer.
Preferably, the photomultiplier tube quantity used in the tritium carbon and totalαtotalβ measuring system for two and three in
Any one, the photomultiplier tube quantity used in the gamma-spectrometry system is one.
Preferably, the measurement storehouse inner wall is covered with the opaque material coating of high reflection.
Preferably, the scintillation crystal sodium iodide crystal, cesium iodide crystal, lanthanum bromide crystal and measurement gamma rays point
Resolution is not higher than 8.5% crystal.
Technical effect and advantage of the invention: a kind of portable multi-function activity meter proposed by the present invention, and it is existing
Technology is compared, and is had the advantage that
1, the present invention is to increase the analytical technology of TDCR on the basis of liquid scintillation counter, increases total α and total
While β differentiates function, gamma activity measurement unit can be matched, sample type selects different sizes and type, institute as needed
There are count results and gamma-spectrometric data real-time display, the test process conveniently automated can be interrupted and be edited and data are defeated
Optional function out.The advantages that with high sensitivity, portability is multi-functional, easy to operate, strong applicability；
2, this system uses twin-channel multichannel analyzer, can measure total α, the total β, gamma of different types of multicore element
The activity of activity, tritium and carbon, really realizes a tractor serves several purposes, can measure different sample specifications, as wipe samples, water sample,
All radioactive isotope measurements are measured in pedotheque and eatable measuration and life science.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is secondary shielding body local interior structural schematic diagram of the invention.
In figure: 1 tritium carbon and totalαtotalβ measuring system, 101 first shields, 102 detectors, 103 measurement storehouses, 104 displays
Unit, 105 lead screen shutters, 2 gamma-spectrometry systems, 201 secondary shielding bodies, 202 gamma detectors, 203 vitriol chamber doors, 3 data
Analytical unit, 4 yellow lead layers, 5 organic plastics layers, 6 lead layers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of portable multi-function activity meters as shown in Figs. 1-2, including tritium carbon and totalαtotalβ
Measuring system 1, gamma-spectrometry system 2 and data analysis unit 3, data analysis unit 3 analyze the data of measuring unit,
The total activity of different measurement samples can be provided；The tritium carbon and totalαtotalβ measuring system 1 include the first shield 101, detection
Device 102, measurement storehouse 103 and display unit 104, the measurement storehouse 103 are arranged inside the first shield 101, the detector
In measurement 103 bottom side of storehouse, 101 top of the first shield is equipped with lead screen shutter 105 for 102 settings, and the display is single
Member 14 is arranged on lead screen shutter 105, wherein the first shield 101 is in design, all angles for being directed to sample have
Using the lead screen of identical thickness, good shielding can be provided and reduce the weight of instrument.Wherein lead screen shutter 105 is
Shielding cosmic ray provides optimal shielding mode.Detector 102 uses the photomultiplier tube of ultralow background, and entire light
Electric multiplier tube is all by lead screen, the tail end including lead-out wire, and three photomultiplier tube combination high reflection formula measuring chamber designs mention
Optimal geometry designs have been supplied, and can be used for the analysis of TDCR technology, the sample type of the system module of measurement of tritium, carbon and totalαtotalβ
It is that liquid dodges sample, miniature tube, test bottle, sample volume can fill 0.01mL-20mL, can select different sizes and type as needed
Sample bottle, the gamma-spectrometry system 2 include secondary shielding body 201 and gamma detector 202, the secondary shielding body 201
Top is equipped with vitriol chamber door 203, and the structure that vitriol chamber uses upward-acting door integrally to open the door, the advantage of this structure is most probable shields
Cosmic ray and size selective sampling.
Preferably, the secondary shielding body 201 includes yellow lead layer 4, organic plastics layer 5 and lead layer 6, the Huang lead layer 4,
Organic plastics layer 5 and lead layer 6 are set gradually from the inside to the outside.
By using above-mentioned technical proposal, it is arranged using yellow lead layer 4, organic plastics layer 5 and lead layer 6, to gamma detector
202 provide the effect of protection and shielding.
Preferably, the gamma detector 202 by scintillation crystal, photomultiplier tube, base bleeder circuit and before put and form.
Preferably, the data analysis unit 3 is PC machine, and PC machine includes host, display and keyboard.
By using above-mentioned technical proposal, the advanced spectrum analysis function of the dedicated control software and software for analyzing spectrum of PC machine can
Independent key operation or connection PC operation, selecting data output have the function of to interrupt and editing.
Preferably, the thickness of first shield 101 is not less than 50mm.
Preferably, the diameter dimension for the photomultiplier tube that the gamma detector 202 uses is not less than 50mm.
Preferably, the tritium carbon and totalαtotalβ measuring system 1 use single channel or twin-channel multichannel analyzer.
TDCR technology can be used when using twin-channel dual channel analysis device by using above-mentioned technical proposal.
Preferably, the photomultiplier tube quantity used in the tritium carbon and totalαtotalβ measuring system 1 is worked as two and three
In any one, the photomultiplier tube quantity used in the gamma-spectrometry system 2 is one.
Preferably, measurement 103 inner wall of storehouse is covered with the opaque material coating of high reflection.
By using above-mentioned technical proposal, the opaque material coating that 103 inner wall of storehouse is covered with high reflection is measured, it is maximum
The transmitting light of limit collected in sample.
Preferably, the scintillation crystal sodium iodide crystal, cesium iodide crystal, lanthanum bromide crystal and measurement gamma rays point
Resolution is not higher than 8.5% other crystal.
In summary: the present invention is to increase the analytical technology of TDCR on the basis of liquid scintillation counter, increase
While total α and total β differentiates function, gamma activity measurement unit can be matched, sample type select as needed different sizes and
Type, all count results and gamma-spectrometric data real-time display, the test process conveniently automated, can interrupt and edit and
Data export optional function.The advantages that with high sensitivity, portability is multi-functional, easy to operate, strong applicability.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. a kind of portable multi-function activity meter, including tritium carbon and totalαtotalβ measuring system (1), gamma-spectrometry system (2)
With data analysis unit (3), it is characterised in that: the tritium carbon and totalαtotalβ measuring system (1) include the first shield (101),
Detector (102), measurement storehouse (103) and display unit (104), measurement storehouse (103) setting is in the first shield (101)
Portion, in measurement storehouse (103) bottom side, the first shield (101) top is equipped with lead screen for detector (102) setting
Shutter (105), the display unit (14) are arranged on lead screen shutter (105), and the gamma-spectrometry system (2) includes second
Shield (201) and gamma detector (202), secondary shielding body (201) top are equipped with vitriol chamber door (203).
2. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the secondary shielding body
It (201) include yellow lead layer (4), organic plastics layer (5) and lead layer (6), the Huang lead layer (4), organic plastics layer (5) and lead layer
(6) it sets gradually from the inside to the outside.
3. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the gamma detector
(202) by scintillation crystal, photomultiplier tube, base bleeder circuit and before put and form.
4. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the data analysis is single
First (3) are PC machine, and PC machine includes host, display and keyboard.
5. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: first shield
(101) thickness is not less than 50mm.
6. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the gamma detector
(202) diameter dimension of the photomultiplier tube used is not less than 50mm.
7. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the tritium carbon and total α
Total RNA rxtraction system (1) uses single channel or twin-channel multichannel analyzer.
8. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the tritium carbon and total α
The photomultiplier tube quantity used in total RNA rxtraction system (1) is any one in two and three, the gamma-spectrometry system
The photomultiplier tube quantity used in system (2) is one.
9. a kind of portable multi-function activity meter according to claim 1, it is characterised in that: the measurement storehouse
(103) inner wall is covered with the opaque material coating of high reflection.
10. a kind of portable multi-function activity meter according to claim 3, it is characterised in that: the scintillation crystal
Sodium iodide crystal, cesium iodide crystal, lanthanum bromide crystal and measurement gamma rays resolution ratio are not higher than 8.5% crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128046.4A CN110018512A (en) | 2019-02-21 | 2019-02-21 | A kind of portable multi-function activity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128046.4A CN110018512A (en) | 2019-02-21 | 2019-02-21 | A kind of portable multi-function activity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110018512A true CN110018512A (en) | 2019-07-16 |
Family
ID=67189033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910128046.4A Pending CN110018512A (en) | 2019-02-21 | 2019-02-21 | A kind of portable multi-function activity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110018512A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB963642A (en) * | 1960-04-26 | 1964-07-15 | Ceskoslovenska Akademie Ved | Apparatus for the measurement of low levels of beta-radioactivity in liquids |
| US3320419A (en) * | 1965-03-18 | 1967-05-16 | Ans Inc | Liquid scintillation counting system for the measurement of soft beta activity |
| WO2000031566A2 (en) * | 1998-11-25 | 2000-06-02 | Esm Eberline Instruments Strahlen- Und Umweltmesstechnik Gmbh | Method and device for measuring the radioactive contamination of a test object |
| CN101858985A (en) * | 2010-03-18 | 2010-10-13 | 成都理工大学 | Multifunctional rare earth product radioactivity detecting instrument based on composite detector |
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| CN201757787U (en) * | 2009-11-18 | 2011-03-09 | 成都理工大学 | Multifunctional rare-earth product radioactivity detector based on compound detector |
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| US20140291531A1 (en) * | 2011-10-27 | 2014-10-02 | Atomic Energy Of Canada Limited/ Énergie Atomique Du Canada Limitée | Portable Detection Apparatus and Method |
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-
2019
- 2019-02-21 CN CN201910128046.4A patent/CN110018512A/en active Pending
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|---|---|---|---|---|
| GB963642A (en) * | 1960-04-26 | 1964-07-15 | Ceskoslovenska Akademie Ved | Apparatus for the measurement of low levels of beta-radioactivity in liquids |
| US3320419A (en) * | 1965-03-18 | 1967-05-16 | Ans Inc | Liquid scintillation counting system for the measurement of soft beta activity |
| WO2000031566A2 (en) * | 1998-11-25 | 2000-06-02 | Esm Eberline Instruments Strahlen- Und Umweltmesstechnik Gmbh | Method and device for measuring the radioactive contamination of a test object |
| CN201757787U (en) * | 2009-11-18 | 2011-03-09 | 成都理工大学 | Multifunctional rare-earth product radioactivity detector based on compound detector |
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| WO2012076775A1 (en) * | 2010-12-08 | 2012-06-14 | Observatoire De Paris | Device for measuring radiation |
| US20140291531A1 (en) * | 2011-10-27 | 2014-10-02 | Atomic Energy Of Canada Limited/ Énergie Atomique Du Canada Limitée | Portable Detection Apparatus and Method |
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Application publication date: 20190716 |