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WO2018121666A1 - Détecteur à transistors à double clignotement de type réseau et appareil de surveillance - Google Patents

Détecteur à transistors à double clignotement de type réseau et appareil de surveillance Download PDF

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Publication number
WO2018121666A1
WO2018121666A1 PCT/CN2017/119355 CN2017119355W WO2018121666A1 WO 2018121666 A1 WO2018121666 A1 WO 2018121666A1 CN 2017119355 W CN2017119355 W CN 2017119355W WO 2018121666 A1 WO2018121666 A1 WO 2018121666A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
double scintillation
double
housing
scintillation crystals
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.)
Ceased
Application number
PCT/CN2017/119355
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English (en)
Chinese (zh)
Inventor
靳增雪
赵崑
钟庆霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuctech Co Ltd
Original Assignee
Nuctech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nuctech Co Ltd filed Critical Nuctech Co Ltd
Publication of WO2018121666A1 publication Critical patent/WO2018121666A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G01T1/167—Measuring radioactive content of objects, e.g. contamination
    • 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
    • G01T1/2023—Selection of materials
    • 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
    • G01T1/203—Measuring radiation intensity with scintillation detectors the detector being made of plastics
    • G01T1/2033—Selection of materials

Definitions

  • the invention relates to the field of detection technology, in particular to a gate type double scintillation crystal detector and a monitoring device.
  • a gate type double scintillation crystal detector comprising:
  • a housing defining a built-in space, including a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet being configured such that fluid flows from the fluid inlet into the housing and out of the housing from the fluid outlet;
  • a plurality of double scintillation crystals disposed in the housing for emitting photons by contacting the fluid such that a substance within the fluid excites the plurality of double scintillation crystals;
  • At least one photomultiplier tube for collecting photons emitted by the double scintillation crystal and emitting a signal
  • the plurality of double scintillation crystals extend in a generally lateral direction of the fluid inlet toward the fluid outlet and are spaced apart from one another.
  • each of the plurality of double scintillation crystals comprises a plastic scintillator and a ZnS film coated on the surface of the plastic scintillator.
  • the housing has a rectangular parallelepiped shape including a first side and a second side opposite the first side, a fluid inlet is disposed on the first side, and a fluid outlet is disposed on the second side;
  • the plurality of double scintillation crystals extend in a generally lateral direction of the fluid inlet toward the fluid outlet between the first side and the second side of the housing.
  • the housing is generally cylindrical, the fluid inlet and the fluid outlet are disposed on opposite sides of the circumference of the cylindrical housing, the plurality of double scintillation crystals are along the longitudinal direction of the cylindrical housing extend.
  • a plurality of double scintillation crystals are alternately disposed on the sidewall between the first side and the second side of the housing such that one or both of the double scintillation crystals on one side wall are on opposite sides
  • the double scintillation crystals on the wall extend between the fluids from the fluid inlet, flowing between the alternately disposed plurality of scintillation crystals, and flowing out of the housing from the fluid outlet.
  • a plurality of double scintillation crystals are alternately disposed on sidewalls of both ends of the cylindrical housing such that one or two double scintillation crystals on one sidewall are double scintillation crystals on opposite sidewalls
  • the extension extends so that fluid flows in from the fluid inlet, flows between the alternately disposed plurality of scintillation crystals, and flows out of the housing from the fluid outlet.
  • At least one photomultiplier tube is disposed on a sidewall of the housing provided with a plurality of double scintillation crystals for optical coupling with the ends of the plurality of double scintillation crystals, detecting the plurality of pairs Photons emitted by the scintillation crystal.
  • the plurality of double scintillation crystals are a plurality of plate shaped double scintillation crystals.
  • the plurality of double scintillation crystals are a plurality of fibrous double scintillation crystals.
  • the outer portion of the housing is coated with a light-protecting material and/or an inner wall coated reflective layer to block external light from entering the housing.
  • Another aspect of the present invention also provides a monitoring apparatus comprising the aforementioned gate type double scintillation crystal detector.
  • the monitoring device further includes:
  • Equipment inlet fluid entering the equipment from the equipment inlet
  • a particulate filter configured to filter solid particles in the fluid
  • An ultraviolet sterilization device configured to sterilize the fluid using ultraviolet rays
  • a metering pump configured to measure fluid volume
  • a data processing device configured to collect, store, and display data
  • the fluid flows out of the monitoring device from the outlet of the device;
  • the inlet of the liquid device to be inspected flows in, the solid particles are filtered through the particle filter, and then sterilized by ultraviolet rays, and then the fluid is measured by the metering pump, and after the measurement, the gate type double scintillation crystal detector is entered, and finally the device is The exit is out.
  • FIG. 1 is a schematic perspective view of a gate type double scintillation crystal detector according to an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of a gate type double scintillation crystal detector according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the arrangement of a double scintillation crystal of a gate type double scintillation crystal detector according to an embodiment of the present invention
  • FIG. 4 is a functional block diagram of a monitoring device in accordance with an embodiment of the present invention.
  • the offline monitoring device in the prior art basically adopts an evaporation concentration method, that is, pre-treating the water sample in the area to be monitored (including sampling, concentration, conversion, washing, burning, ashing, weighing, etc.), and then The concentrated solid is detected by using a corresponding detector (double flash detector or silicon detector), and the total ⁇ and total ⁇ activity in the liquid in the sampling area during the sampling period are reversed by the detection result to achieve the monitoring purpose.
  • a corresponding detector double flash detector or silicon detector
  • FIG. 1 is a schematic perspective view of a gate type double scintillation crystal detector according to an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of a gate type double scintillation crystal detector according to an embodiment of the present invention.
  • One embodiment of the present invention provides a gate type double scintillation crystal detector 10 comprising:
  • the housing 110 defines a built-in space, the housing 110 includes a fluid inlet 112 and a fluid outlet 113, the fluid inlet 112 and the fluid outlet 113 being configured such that fluid flows from the fluid inlet 112 into the housing 110, flowing out of the fluid outlet 113 Housing 110;
  • a plurality of double scintillation crystals 111 disposed in the housing 110 for emitting photons by contacting the fluid such that the substances in the fluid excite the plurality of double scintillation crystals 111;
  • At least one photomultiplier tube 120 for collecting photons emitted by the double scintillation crystal 111 and emitting a signal
  • the plurality of double scintillation crystals 111 extend in a substantially lateral direction of the fluid inlet 112 toward the fluid outlet 113 and are spaced apart from each other. Referring to FIG. 3, the direction of the fluid inlet 112 toward the fluid outlet 113 is a horizontal direction, and the plurality of double scintillation crystals 111 extend in the vertical direction.
  • the direction in which the double scintillation crystal 111 extends is perpendicular to the overall flow direction of the fluid, or the double scintillation crystal 111 extends in a generally lateral direction of the fluid inlet 112 toward the fluid outlet 113 and is spaced apart from each other such that the fluid can be spaced apart from each other
  • the turbulent flow between the scintillation crystals, the fluid flow path is extended, and the local flow direction of the fluid is constantly changed by the double scintillation crystal, so that the fluid can be in full contact with the double scintillation crystal 111, whereby the monitored substance in the fluid can be fully contacted.
  • a plurality of double scintillation crystals 111 excite the double scintillation crystals 111 to emit photons.
  • a plurality of dual scintillation crystals are disposed within the housing for detecting alpha and beta particles produced by decay of radionuclides within the surface of the crystal.
  • each of the plurality of double scintillation crystals 111 includes a plastic scintillator and a ZnS film coated on the surface of the plastic scintillator.
  • the double scintillation crystal 111 can be other types of scintillators.
  • the refractive index of the plastic scintillator is 1.6, and the refractive index of ZnS is 2.356.
  • a gate-type double scintillation crystal 111 detector as shown in Figures 1 and 2
  • fluid flows in from below the fluid inlet 112, above the fluid inlet 112, the overall flow of fluid
  • the direction can thus be seen as bottom-up, ie in the vertical direction in the structure shown on the paper.
  • the double scintillation crystal 111 is in the lateral direction in the vertical direction, that is, in the horizontal direction shown on the paper surface. 2 is only one embodiment of the present invention, facilitating an understanding of the manner in which the fluid inlet 112, fluid outlet 113, and dual scintillation crystal 111 are disposed by those skilled in the art.
  • the direction of fluid flow can be set from top to bottom.
  • the fluid inlet when the fluid inlet is on the left side of the paper surface and the fluid outlet is on the right side of the paper surface, the fluid may flow from left to right through the passage formed by the double scintillation crystal arranged in the up and down direction to be in contact with the double scintillation crystal.
  • the gate type double scintillation crystal detector 10 may be arranged in any direction, however, wherein the arrangement orientation of the fluid inlet and the fluid outlet is similar to the arrangement orientation of the double scintillation crystals and their relative positional relationship, It is understood with reference to the above embodiments.
  • the housing 10 can be of any desired shape.
  • the housing 110 has a rectangular parallelepiped shape including a first side and a second side opposite the first side, a fluid inlet 112 disposed on the first side and a fluid outlet 113 disposed on the second side; the plurality of double flashes
  • the crystal 111 extends in a generally lateral direction of the fluid inlet 112 toward the fluid outlet 113 between the first side and the second side of the housing 110.
  • first”, “second”, “third” and the like are used herein to designate different components so as to distinguish different components without indicating any meaning related to importance, order, and the like;
  • the words “upper”, “lower” and the like are also merely an arrangement of means or components, in fact, the components may be arranged in other orientations.
  • the fluid inlet 112 is disposed on a lower side of the rectangular parallelepiped casing
  • the fluid outlet 113 is disposed on an upper side of the rectangular parallelepiped casing
  • the plurality of double scintillation crystals 111 are in the casing 110
  • the upper side and the lower side extend in a substantially lateral direction along the direction of the fluid inlet 112 toward the fluid outlet 113.
  • the plurality of double scintillation crystals 111 are horizontally between the upper side and the lower side of the housing 110. extend.
  • a plurality of double scintillation crystals 111 are alternately disposed along the fluid flow direction on the side wall between the first side and the second side of the housing 110 such that one side wall
  • One or two double scintillation crystals 111 extend between the two double scintillation crystals 111 on the opposite side walls so that fluid flows in from the fluid inlet 112, turbulent between the plurality of double scintillation crystals 111 alternately disposed.
  • the housing 110 is discharged from the fluid outlet 113.
  • the first side is the upper side
  • the second side is the lower side
  • the plurality of double scintillation crystals 111 are alternately disposed in the One or more of the four side walls between the first side and the second side of the housing 110.
  • a plurality of scintillation crystals are alternately disposed on opposite side walls between the first side and the second side of the housing 110.
  • a plurality of scintillation crystals are alternately disposed adjacent two adjacent sidewalls between the first side and the second side of the housing 110.
  • a plurality of scintillation crystals are alternately disposed on three side walls, or four side walls, between the first side and the second side of the housing 110, and fluid flows in from the fluid inlet 112, alternately disposed
  • the plurality of double scintillation crystals 111 flow through between the plurality of scintillation crystals 111 and flow out of the housing 110 from the fluid outlet 113.
  • the casing 110 is substantially cylindrical, and the fluid inlet 112 and the fluid outlet 113 are disposed on opposite sides of the circumferential surface of the cylindrical casing 110.
  • the plurality of double scintillation crystals 111 extend in the longitudinal direction of the cylindrical casing 110. In other words, the plurality of double scintillation crystals 111 extend in the horizontal direction in the plane of the paper of FIG.
  • the size of the double scintillation crystal 111 is adapted to the shape adjustment of the cylindrical casing 110, and the double scintillation crystal 111 in the central portion of the cylindrical casing 110 is large in size, in a cylindrical casing.
  • the size of the double scintillation crystal 111 in the body 110 near the wall is small.
  • the gate type double scintillation crystal detector 10 is capable of monitoring, for example, radioactive substances in a fluid.
  • the double scintillation crystal 111 may also be a curved panel, and the curved panel-shaped double scintillation crystal 111 has a large contact area with the fluid, and is adapted to the shape of the cylindrical casing, thereby improving the sensitivity of the monitoring.
  • the housing 110 of the gate type double scintillation crystal detector 10 is a cylinder having an elliptical cross section. In still another embodiment in accordance with the present invention, the housing 110 of the gate type double scintillation crystal detector 10 is a cylinder having a polygonal cross section. It will be appreciated that the shape of the housing 110 can be other shapes, and other forms of housing 110 shapes are contemplated by those skilled in the art based on the embodiments disclosed herein.
  • At least one photomultiplier tube 120 is disposed on a sidewall of the housing 110 provided with a plurality of double scintillation crystals 111 for optical coupling with ends of the plurality of double scintillation crystals 111, Photons emitted by the plurality of double scintillation crystals 111 are detected.
  • the photomultiplier tube 120 can be one, or two, or a plurality of photomultiplier tubes 120, and the function of the photomultiplier tube 120 is well known.
  • the photomultiplier tube 120 is optically coupled to one end of the double scintillation crystal 111 to receive photons emitted by the double scintillation crystal 111.
  • an embodiment of the present invention optically couples the end of the double scintillation crystal 111 to the photomultiplier tube 120 such that photons emitted by the double scintillation crystal 111 are collected by the photomultiplier tube 120 through the end of the double scintillation crystal 111.
  • the plate-shaped double scintillation crystal 111 has an advantage of large area, a large contact area with a fluid such as water or a solution generates a large number of photons, and thus according to the present invention
  • the accuracy of the dual scintillation crystal 111 detector of the embodiment can meet the needs of practical use; and the plate-shaped double scintillation crystal 111 detector is simple in manufacturing process, for example, can be fabricated by spraying or hot pressing, and has low manufacturing cost, for example, Processes such as evaporation, coating, etc.
  • the refractive index of the ZnS material is larger than that of the plastic scintillator, light does not totally reflect at the interface between the scintillator and the ZnS material, that is, part of the photons are scattered from the scintillator through the ZnS material into the fluid, and The end which is not propagated in the plate-shaped double scintillation crystal 111 to the double scintillation crystal 111 is collected by the photomultiplier tube 120, and thus the photon is reduced in the plate-shaped double scintillation crystal 111, which is advantageous in preventing loss of light and improving photon. Collect efficiency.
  • the plurality of double scintillation crystals 111 are a plurality of fibrous double scintillation crystals 111.
  • one or both ends of the fibrous double scintillation crystal 111 may be mounted on the side wall of the housing 110 to be optically coupled to the photomultiplier tube 120.
  • the fluid flows between the plurality of fibrous double scintillation crystals 111.
  • the surface of the double scintillation crystal 111 formed of the plastic scintillator is coated with a ZnS material. Light is conducted in the double scintillation crystal 111.
  • the refractive index of the ZnS material is larger than that of the plastic scintillator, part of the light escapes from the double scintillation crystal 111, and the number of photons collected at the end of the double scintillation crystal 111 is larger than the actually generated photon. The number is small, which is why the prior art generally does not make the double scintillation crystal 111 fibrous.
  • the present inventors have found through experiments that although the photon loss is large, since the surface area of the fibrous double scintillation crystal 111 is increased, the contact efficiency with the fluid is increased, and the total number of photons generated is increased, so that even if the photon loses part during the conduction process, However, the number of photons collected at the end of the fibrous double scintillation crystal 111 is still sufficient, that is, the detection efficiency of the photomultiplier tube 120 is also sufficient for practical applications.
  • the housing 110 is externally coated with a light-protecting material and/or an inner wall coated reflective layer to block external light from entering the housing 110.
  • the housing 110 can be, for example, a plexiglass box into which light can enter.
  • the photomultiplier tube 120 detects photons emitted by the double scintillation crystal 111 detector, it is necessary to prevent external light from being detected by the photomultiplier tube 120.
  • the inner and outer surfaces of the housing 110 are coated with a light-shielding material or a light-reflecting material to prevent external light from entering the inside of the housing 110, improving the detection accuracy of the photomultiplier tube 120.
  • Another embodiment of the present invention provides a monitoring apparatus including the aforementioned gate type double scintillation crystal detector 10.
  • the monitoring equipment it also includes:
  • Equipment inlet fluid entering the equipment from the equipment inlet
  • a particulate filter configured to filter solid particles in the fluid
  • An ultraviolet sterilization device configured to sterilize the fluid using ultraviolet rays
  • a metering pump configured to measure fluid volume
  • a data processing device configured to collect, store, and display data
  • the fluid exits the monitoring device from the outlet of the device;
  • the inlet of the liquid equipment to be inspected flows in, firstly filters out the solid particles through the particle filter, and then is sterilized by ultraviolet rays, and then the fluid is measured by the metering pump, and after measuring, enters the gate type double scintillation crystal detector 10, and finally flows out from the device outlet. .
  • the radioactive liquid to be tested flows in from the inlet of the device, and the solid particles are filtered through the particle filter, and then sterilized by ultraviolet rays to prevent microorganisms and bacteria in the liquid from adhering to the surface of the detector to affect the detection result. And block the passage.
  • the volume is measured by the metering pump, and after passing through the measurement, it passes through the gate type double scintillation crystal detector 10, and finally flows out from the device outlet.
  • the gate type double scintillation crystal detector 10 is connected to the control end to complete data acquisition, storage and display.
  • the monitoring device of the embodiment can continuously monitor the total ⁇ and total ⁇ activity/counting in the fluid in the real-time on-line, and the operation is simple, no manual operation is required during the operation; the consumables are small, and can be used repeatedly; Monitoring site restrictions can be monitored on site.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measurement Of Radiation (AREA)

Abstract

L'invention concerne un détecteur à transistors à double clignotement de type réseau, ainsi qu'un appareil de surveillance. Le détecteur à transistors à double clignotement de type réseau comprend : un boîtier comprenant une entrée de fluide et une sortie de fluide, l'entrée de fluide et la sortie de fluide étant conçues pour permettre à un fluide de s'écouler dans le boîtier par l'intermédiaire de l'entrée de fluide et de sortir du boîtier par l'intermédiaire de la sortie de fluide ; une pluralité de transistors à double clignotement configurés dans le boîtier et en contact avec le fluide afin de permettre à des substances dans le fluide d'exciter la pluralité de transistors à double clignotement afin d'émettre des photons ; et au moins un photomultiplicateur utilisé afin de collecter les photons émis par les transistors à double clignotement et de générer un signal ; la pluralité de transistors à double clignotement étant séparés les uns des autres et étalés le long d'une direction sensiblement transversale de l'entrée de fluide à la sortie de fluide.
PCT/CN2017/119355 2016-12-29 2017-12-28 Détecteur à transistors à double clignotement de type réseau et appareil de surveillance Ceased WO2018121666A1 (fr)

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CN201611255898.2 2016-12-29
CN201611255898.2A CN106772534A (zh) 2016-12-29 2016-12-29 栅型双闪烁晶体探测器和监测设备

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114706113A (zh) * 2022-01-21 2022-07-05 沈阳工程学院 一种空气中放射性污染实时测量装置及方法

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN106772534A (zh) * 2016-12-29 2017-05-31 同方威视技术股份有限公司 栅型双闪烁晶体探测器和监测设备
CN109655874B (zh) * 2019-02-25 2020-04-10 衡阳师范学院 闪烁室测氡装置和方法
CN113176603B (zh) * 2021-03-09 2022-05-17 中国工程物理研究院材料研究所 一种用于液态流出物中低水平放射性核素连续测量的装置
JP7769972B2 (ja) * 2021-12-03 2025-11-14 国立研究開発法人日本原子力研究開発機構 シンチレータユニットおよび放射線源検出モジュール

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54123987A (en) * 1978-03-20 1979-09-26 Toshiba Corp Radiation detector
JPS55128179A (en) * 1979-03-28 1980-10-03 Toshiba Corp Radiant ray detector
JP2013124890A (ja) * 2011-12-14 2013-06-24 Mitsubishi Electric Corp 放水口水モニタ
CN106772534A (zh) * 2016-12-29 2017-05-31 同方威视技术股份有限公司 栅型双闪烁晶体探测器和监测设备
WO2017129700A1 (fr) * 2016-01-29 2017-08-03 Commissariat A L'energie Atomique Et Aux Energies Alternatives Cellule de scintillation, ensemble de détection de rayonnements ionisants et procédé de détection de rayonnements ionisants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102565841B (zh) * 2012-02-06 2013-10-09 清华大学 闪烁晶体阵列及具有其的闪烁探测器
CN206348464U (zh) * 2016-12-29 2017-07-21 同方威视技术股份有限公司 栅型双闪烁晶体探测器和监测设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54123987A (en) * 1978-03-20 1979-09-26 Toshiba Corp Radiation detector
JPS55128179A (en) * 1979-03-28 1980-10-03 Toshiba Corp Radiant ray detector
JP2013124890A (ja) * 2011-12-14 2013-06-24 Mitsubishi Electric Corp 放水口水モニタ
WO2017129700A1 (fr) * 2016-01-29 2017-08-03 Commissariat A L'energie Atomique Et Aux Energies Alternatives Cellule de scintillation, ensemble de détection de rayonnements ionisants et procédé de détection de rayonnements ionisants
CN106772534A (zh) * 2016-12-29 2017-05-31 同方威视技术股份有限公司 栅型双闪烁晶体探测器和监测设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114706113A (zh) * 2022-01-21 2022-07-05 沈阳工程学院 一种空气中放射性污染实时测量装置及方法

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