CN108196294A - A kind of X ray air attenuation coefficient detecting system - Google Patents
A kind of X ray air attenuation coefficient detecting system Download PDFInfo
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- CN108196294A CN108196294A CN201711428409.3A CN201711428409A CN108196294A CN 108196294 A CN108196294 A CN 108196294A CN 201711428409 A CN201711428409 A CN 201711428409A CN 108196294 A CN108196294 A CN 108196294A
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- attenuation coefficient
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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
- G01T1/185—Measuring radiation intensity with ionisation chamber arrangements
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Abstract
The present embodiments relate to a kind of X ray air attenuation coefficient detecting system, detecting system includes：X-ray machine is placed on optical table, for emitting X ray；Vacuum extractor, vacuum extractor include vacuum chamber, vacuum pump, vacuum gauge, vacuum measuring gauge, temperature sensor and temperature controller；The center of the central axis of vacuum chamber and the X ray exit portal of X-ray machine coincides；Vacuum orifice is provided on vacuum chamber；Vacuum pump is connected by connecting tube with the vacuum orifice of vacuum chamber；Vacuum gauge is arranged between connecting tube and vacuum chamber, measures the indoor vacuum values of vacuum；Vacuum measuring gauge is electrically connected with vacuum gauge；Temperature sensor is arranged on the junction of vacuum chamber and connecting tube, measures the indoor temperature value of vacuum；Temperature controller, temperature controller are electrically connected with temperature sensor；Ionisation chamber, the center of X ray entrance port of ionisation chamber and the central axis of vacuum chamber coincide.The present invention, experimental implementation is simple, is easy to control.
Description
Technical field
The present invention relates to technical field of measuring equipment more particularly to a kind of X ray air attenuation coefficient detecting systems.
Background technology
When reappearing X ray air kerma unit in ionising radiation metering, usually using free-air ionization chamber, but
It is that there are distances with actual spot of measurement for defining point when free-air ionization chamber is to the progress absolute measurement of X ray air kerma
Difference, therefore, the ionization electricity that is obtained with measurement point determines the air kerma amount of defining point, it is necessary to which this range difference is drawn
The attenuation of air risen is corrected.X ray air-attenuation amendment is larger in free-air ionization chamber's reproduction air kerma
Correction term, be affected to total modifying factor uncertainty.
From the foregoing, it will be observed that extremely important to the measurement of X ray air-attenuation, generally use measures the attenuation of X ray air quality
Coefficient determines air-attenuation modifying factor.At present, the method for measuring X ray air attenuation coefficient is mainly displacement distance method,
Using displacement distance method survey X ray air attenuation coefficient need keep displacement distance before and after enter ionisation chamber X ray fluence one
It causes, still, this point is difficult control during the experiment.
Invention content
In order to solve the problems in the prior art, the purpose of the present invention is to provide the X that a kind of experimental implementation is simple, is easy to control
Ray air attenuation coefficient detecting system.
To achieve the above object, the present invention provides a kind of X ray air attenuation coefficient detecting system, the detecting systems
Including：
X-ray machine is placed on optical table, for emitting X ray；
Vacuum extractor, the vacuum extractor include vacuum chamber, vacuum pump, vacuum gauge, vacuum measuring gauge, temperature sensing
Device and temperature controller；
The vacuum chamber, the central axis of the vacuum chamber and the center of the X ray exit portal of the X-ray machine coincide；
Vacuum orifice is provided on the vacuum chamber；
The vacuum pump is connected by connecting tube with the vacuum orifice of the vacuum chamber；The vacuum pump is according to connecing
The pressure control signal enabling received, the indoor air of the vacuum is extracted out, the indoor pressure of the vacuum is made to reach described
The pressure values that pressure control signal is specified；
The vacuum gauge is arranged between the connecting tube and the vacuum chamber, measures the indoor vacuum degree of the vacuum
Numerical value；
The vacuum measuring gauge is electrically connected with the vacuum gauge, for showing the vacuum values；
The temperature sensor is arranged on the junction of the vacuum chamber and the connecting tube, measures in the vacuum chamber
Temperature value；
The temperature controller, the temperature controller is electrically connected with the temperature sensor, for showing the temperature value；
Ionisation chamber, the center of the X ray entrance port of the ionisation chamber and the central axis of the vacuum chamber coincide.
Preferably, the detecting system further includes grating, and the grating is arranged on the X ray outgoing of the X-ray machine
Between mouth and the vacuum chamber.
Preferably, the vacuum extractor further includes supporting rack, support frame as described above include pedestal, supporting rod, threaded rod and
Installing plate；
The pedestal, the upper surface of the pedestal are equipped with retainer ring；
The supporting rod, the supporting rod are hollow stem；One end of the supporting rod is fixed in the retainer ring；It is described
The other end of supporting rod is equipped with connector, and threaded hole is provided on the connector；
The threaded rod wears the connector by the threaded hole, and the support is stretched into one end of the threaded rod
In bar；
The installing plate is fixed on the other end of the threaded rod, for fixing the vacuum chamber.
It is further preferred that it is slidably connected between the supporting rod and the connector, by rotating the connector tune
Save the height of the installing plate.
It is further preferred that it is fixedly connected between the retainer ring and the pedestal by reinforcing rib.
It is further preferred that the vacuum chamber includes vacuum tube, two beryllium windows and mounting bracket；
The vacuum tube, one end of the vacuum tube are equipped with mounting flange；The other end of the vacuum tube is equipped with opening method
Orchid, it is described opening flange on be provided with the vacuum orifice；
Two beryllium windows are separately positioned on the mounting flange and the opening flange；
The mounting bracket, one end of the mounting bracket are fixedly mounted on the vacuum tube；The other end of the mounting bracket
On the installing plate, for fixing the vacuum chamber.
Still further preferably, it is bolted between the mounting bracket and the installing plate.
Preferably, the connecting tube uses bellows.
Preferably, the vacuum pump and the junction of the connecting tube are equipped with shut-off valve.
Preferably, the vacuum gauge is advised using film.
X ray air attenuation coefficient detecting system provided in an embodiment of the present invention measures X ray air using vacuumizing method
Attenuation coefficient places a vacuum tube between x-ray source and ionisation chamber, vacuum pump is controlled to extract vacuum tube by adjusting vacuum valve
Interior air, then the air pressure before and after monitoring pumping air in vacuum tube and temperature, calculate the air capacity pumped, thus change X
Ray enters the air quality thickness to interact before ionisation chamber with air, and air attenuation coefficient is obtained.This detecting system can
Ensure that the X ray injection rate for entering ionisation chamber is always consistent during the experiment, experimental implementation is simple, is easy to control, solution
Ionisation chamber X ray injection rate problem more rambunctious in displacement distance of having determined method.
Description of the drawings
Fig. 1 is the structure diagram of X ray air attenuation coefficient detecting system provided in an embodiment of the present invention；
Fig. 2 is the vacuum chamber of X ray air attenuation coefficient detecting system provided in an embodiment of the present invention and the peace of supporting rack
Assembling structure schematic diagram.
Specific embodiment
Below by drawings and examples, technical scheme of the present invention is described in further detail.
The present embodiments relate to the X ray air attenuation coefficient detecting systems of offer, and X ray is measured using vacuumizing method
Air attenuation coefficient ensure that the X ray injection rate in experimentation into ionisation chamber is always consistent, easy to operate, easily
In control, solve the problems, such as that the ionisation chamber X ray injection rate in displacement distance method is more rambunctious.
Fig. 1, Fig. 2 are respectively the structure diagram of X ray air attenuation coefficient detecting system provided in an embodiment of the present invention
With the mounting structure schematic diagram of vacuum chamber and supporting rack.With reference to shown in Fig. 1 and Fig. 2：
X ray air attenuation coefficient detecting system provided in an embodiment of the present invention specifically includes：X-ray machine 1, optical table 2,
Vacuum extractor 3, ionisation chamber 4, grating 5, supporting rack 6 and bolt 7.
Specifically, X-ray machine 1 is placed on optical table 2, for emitting X ray.
Vacuum extractor 3 includes vacuum chamber 31, vacuum pump 32, vacuum gauge 33, vacuum measuring gauge 34,35 and of temperature sensor
Temperature controller 36.Wherein, the central axis of vacuum chamber 31 and the center of the X ray exit portal 11 of X-ray machine 1 coincide, vacuum chamber 31
On be provided with vacuum orifice 311.Vacuum pump 32 is connected by connecting tube 37 with the vacuum orifice 311 of vacuum chamber 31, vacuum pump 32
Signal enabling is controlled according to the pressure received, the air in vacuum chamber 31 is extracted out, the pressure in vacuum chamber 31 is made to reach pressure
The pressure values that control signal is specified.Vacuum gauge 33 is arranged between connecting tube 37 and vacuum chamber 31, is measured true in vacuum chamber 31
Reciprocal of duty cycle numerical value.Vacuum measuring gauge 34 is electrically connected with vacuum gauge 33, for showing vacuum values.Temperature sensor 35 is arranged on
Vacuum chamber 31 and the junction of connecting tube 37, measure the temperature value in vacuum chamber 31, for displays temperature numerical value.Temperature controller 36
It is electrically connected with temperature sensor 35.
The center of the X ray entrance port 41 of ionisation chamber 4 and the central axis of vacuum chamber 31 coincide.
In addition, detecting system further includes grating 5, grating 5 be arranged on X-ray machine 1 X ray exit portal 11 and vacuum chamber 31 it
Between.
In a specific implementation process, connecting tube 37 uses bellows, vacuum pump 32 and the junction of connecting tube 37
Equipped with shut-off valve, vacuum gauge 33 is advised using film.
For vacuum chamber 31 is fixedly mounted, vacuum extractor 3 further includes supporting rack 6, and supporting rack 6 includes pedestal 61, supporting rod
62nd, threaded rod 63 and installing plate 64.The upper surface of pedestal 61 is equipped with retainer ring 65, passes through reinforcement between retainer ring 65 and pedestal 61
Muscle 67 is fixedly connected.Supporting rod 62 is hollow stem, and one end of supporting rod 62 is fixed in retainer ring 65, the other end of supporting rod 62
It equipped with connector 66, is slidably connected between supporting rod 62 and connector 66, by being rotatablely connected first 66 height for adjusting installing plate 64
It spends, threaded hole (not shown) is provided on connector 66.Threaded rod 63 wears connector 66 by threaded hole, threaded rod 63
One end is stretched into supporting rod 62.Installing plate 64 is fixed on the other end of threaded rod 63, for fixing vacuum chamber 31.
At the same time, vacuum chamber 31 includes 312, two beryllium windows 313 of vacuum tube and mounting bracket 314.One end of vacuum tube 312
Equipped with mounting flange 315, the other end of vacuum tube 312 is equipped with opening flange 316, and vacuum orifice is provided on the flange 316 that is open
311.Two beryllium windows 313 are separately positioned on mounting flange 315 and opening flange 316.One end of mounting bracket 314 is fixedly mounted on
On vacuum tube 312, the other end of mounting bracket 314 is mounted on installing plate 64, passes through bolt between mounting bracket 314 and installing plate 64
7 connections, for fixing vacuum chamber 31.
It is to all parts of X ray air attenuation coefficient detecting system provided in this embodiment, between them above
Connection relation is described, with reference to Fig. 1 and Fig. 2, to the complete structure and work of X ray air attenuation coefficient detecting system
It is described in detail as principle.
In X ray air attenuation coefficient detecting system provided in this embodiment, X-ray machine 1 provides x-ray source, is placed on
On optical table 2, ionisation chamber 4 realizes the absolute measurement to x-ray photon flux, the X-ray energy emitted to ensure X-ray machine 1
It is enough ionized room 4 to be received, the center of the X ray entrance port 41 of ionisation chamber 4 and the center pair of the X ray exit portal 11 of X-ray machine 1
It is accurate.
To solve the problems, such as that the ionisation chamber X ray injection rate in displacement distance method is more difficult to control, the present embodiment is used and is vacuumized
Mode, without changing the relative distance between X-ray machine 1 and ionisation chamber 4, be directly changed X ray enter before ionisation chamber 4 with air
The air quality thickness of interaction by measuring relevant experimental data, that is, vacuumizes the atmospheric pressure value in front and rear vacuum tube 312
And temperature value, and pass through the knots modification for being calculated and vacuumizing air quality thickness in front and rear vacuum tube 312, it is finally true according to taking out
The knots modification of air quality thickness calculates X ray air attenuation coefficient in current value and vacuum tube 312 after unprecedented.
Therefore, vacuum extractor 3 is set between X-ray machine 1 and ionisation chamber 4, and vacuum extractor 3 mainly includes vacuum chamber
31st, vacuum pump 32, vacuum gauge 33, vacuum measuring gauge 34, temperature sensor 35 and temperature controller 36.
Wherein, the main body of vacuum chamber 31 be vacuum tube 312, for be connected with vacuum pump 32 and by 312 both ends of vacuum tube into
Row sealing, the both ends of vacuum tube 312 are respectively equipped with mounting flange 315 and opening flange 316, mounting flange 315 and opening flange
It is sealed on 316 using beryllium window 313, opening flange 316 is equipped with vacuum orifice 311, for vacuum chamber 31 and vacuum pump
32 are attached, so that vacuum pump 32 carries out vacuumizing operation to the vacuum tube 312 of vacuum chamber 31.At the same time, to guarantee X
Ray can be correctly passed through vacuum tube 312, just make the center of the X ray entrance port 41 of ionisation chamber 4 and the X ray of X-ray machine 1
The center of exit portal 11, for convenience of the position of vacuum tube 312 is adjusted, is needed vacuum on the central axis of vacuum tube 312
Room 31 is placed on the stent that can be adjusted, therefore vacuum chamber 31 further includes the mounting bracket 314 being connected with each other with stent, installation
One end of frame 314 is dual-gripper plate, and for the fixation of vacuum tube, the other end of mounting bracket 314 is connected with dual-gripper plate
Connecting plate, for rack-mount.
Vacuum extractor 3 uses adjustable for height supporting rack 6, and the upper surface of the pedestal 61 of supporting rack 6 is equipped with retainer ring 65,
For fixing supporting rod 62, one end of supporting rod 62 is plugged in retainer ring 65, to ensure fixed fastness, retainer ring 65 with
It carries out strengthening being fixedly connected by reinforcing rib 67 between pedestal 61.For mounting vacuum tube 312, supporting rack 6 further includes installing plate 64,
The other end connecting plate of mounting bracket 314 is mounted on by bolt 7 on installing plate 64.Wherein, the company of installing plate 64 and supporting rod 62
Mode is connect using most simple and continuously adjustable screw rod connection, therefore the other end in supporting rod 62 is what is connect with installing plate 64
Connector 66 and threaded rod 63 on one end are set, the threaded hole to match with threaded rod 63, threaded rod 63 are provided on connector 66
The height of installing plate 64 is adjusted by being rotated in the threaded hole in connector 66, to ensure that threaded rod 63 there are enough adjusting skies
Between, supporting rod 62 is set as hollow rod shape structure.The X of the central axis of vacuum tube 312 and X-ray machine 1 during due to adjusting height
The center of ray exit portal 11 is in the same plane perpendicular to level ground, the center of the X ray exit portal 11 of X-ray machine 1
For alignment point, 312 up and down adjustment of vacuum tube, when in the X ray exit portal 11 of the central axis alignment X-ray machine 1 of vacuum tube 312
During the heart, height, which is adjusted, to be completed, and still, if be fixedly connected between connector 66 and supporting rod 62, adjusting, installing plate 64 is high
When spending, threaded rod 63, which rotates, also can drive installing plate 64 to rotate, and installing plate 64 rotates the center axis thereof of then vacuum tube 312,
It needs to readjust the horizontal position of vacuum tube 312, adjusts difficulty and increase, therefore, in the process, to simplify experimentation,
Ensure that installing plate 64 is not rotated with the variation of height, therefore be slidably connected between supporting rod 62 and connector 66, be rotatablely connected
When first 66, absolute rotation does not occur for threaded rod 63, drives 64 height up and down of installing plate, while connector 66 and supporting rod 62
Between slide, so as to also ensure that absolute rotation will not occur for supporting rod 62, simplify experimentation so that operation it is simpler
It is single.
Meanwhile for avoid X-ray machine 1 emit X ray can be irradiated to vacuum tube 312 beryllium window 313 marginal portion, influence
Experimental data, can also add grating 5 between the X ray exit portal 11 of X-ray machine 1 and vacuum chamber 31, and grating 5 plays gear
Light diffuses the effect penetrated so that the experimental data measured is more accurate.
In the present embodiment, vacuum chamber 31 is carried out using vacuum pump 32 to vacuumize operation, vacuum pump 32 passes through connecting tube 37
It is connected with the vacuum orifice 311 of vacuum chamber 31, it is preferred that connecting tube 37 is using suitable for measurement low pressure and ripple in higher sensitivity
Pipe, in addition, to cause the chamber pressure stabilization in vacuum tube 312 under a stationary value, in vacuum pump 32 and connecting tube 37
Junction be equipped with shut-off valve, can with regulating system to the effective pumping speed of vacuum chamber 31, meanwhile, utilize the bellows stop valve of air inlet
Adjusting the size of air inflow makes in vacuum tube 312 pressure stability in the pressure value of need of work.Vacuum is measured using vacuum gauge 33
Pressure in pipe 312, and pass through vacuum measuring gauge 34 and show measured value.It is measured in vacuum chamber 312 using temperature sensor 35
Temperature, and pass through temperature controller 36 show measured value.
In the present embodiment, installation calibrating becomes the position of X-ray machine 1, vacuum tube 312 and ionisation chamber 4 first, utilizes infrared ray
Laser beam carries out assisted calibration to it.First by infrared laser beam alignment X-ray machine 1 X ray exit portal 11 center, using pair
The installing plate 64 of infrared laser beam calibration supporting rack 6 after standard, due to vacuum tube 312 by bolt 7 mounted on installing plate
64 center, therefore the center line for calibrating the upper plane of installing plate 64 overlaps, and protect with the infrared laser beam after alignment
The upper plane for demonstrate,proving installing plate 64 is in level.Later, vacuum chamber 31 is mounted on installing plate 64, and carries out accurate adjustment, make alignment
The central axis of infrared laser beam later and vacuum tube 312 is in same vertical level, then passes through rotation connection
First 66 adjust the height of vacuum chamber 312, overlap infrared laser beam and the central axis of vacuum tube 312.Finally, utilization is infrared
Line laser beam adjusts the position of ionisation chamber 4, makes the center of the X ray entrance port 41 of ionisation chamber 4 and the X ray exit portal of X-ray machine 1
11 center is on the central axis of vacuum tube 312, so as to complete the installation of whole device.
In measurement process, measured in the vacuum tube 312 before vacuumizing first with vacuum gauge 33 and vacuum measuring gauge 34
Pressure value, and the temperature value in the vacuum tube 312 before vacuumizing is measured using temperature sensor 35 and temperature controller 36, and record this
When ionization current, then vacuum pump 32 is controlled to the vacuum tube 312 in vacuum chamber 31 vacuumize operation, recycles vacuum
Rule 33 and vacuum measuring gauge 34 measure the pressure value vacuumized in rear vacuum tube 312, utilize temperature sensor 35 and temperature controller 36
The temperature value vacuumized in rear vacuum tube 312 is measured, meanwhile, record the ionization current measured by the ionisation chamber 4 after vacuumizing.It is logical
The pressure value and temperature value crossed before and after vacuumizing calculate the knots modification of air quality thickness in vacuum tube, finally utilize vacuum tube
It the knots modification of interior air quality thickness and vacuumizes front and rear ionization current and calculates X ray air attenuation coefficient.
X ray air attenuation coefficient detecting system provided in an embodiment of the present invention measures X ray air using vacuumizing method
Attenuation coefficient places a vacuum tube between x-ray source and ionisation chamber, vacuum pump is controlled to extract vacuum tube by adjusting vacuum valve
Interior air, then the air pressure before and after monitoring pumping air in vacuum tube and temperature, calculate the air capacity pumped, thus change X
Ray enters the air quality thickness to interact before ionisation chamber with air, and air attenuation coefficient is obtained.This detecting system can
Ensure that the X ray injection rate for entering ionisation chamber is always consistent during the experiment, experimental implementation is simple, is easy to control, solution
Ionisation chamber X ray injection rate problem more rambunctious in displacement distance of having determined method.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of X ray air attenuation coefficient detecting system, which is characterized in that the detecting system includes：
X-ray machine is placed on optical table, for emitting X ray；
Vacuum extractor, the vacuum extractor include vacuum chamber, vacuum pump, vacuum gauge, vacuum measuring gauge, temperature sensor and
Temperature controller；
The vacuum chamber, the central axis of the vacuum chamber and the center of the X ray exit portal of the X-ray machine coincide；It is described
Vacuum orifice is provided on vacuum chamber；
The vacuum pump is connected by connecting tube with the vacuum orifice of the vacuum chamber；The vacuum pump is according to receiving
Pressure control signal enabling, the indoor air of the vacuum is extracted out, the indoor pressure of the vacuum is made to reach the pressure
The pressure values that control signal is specified；
The vacuum gauge is arranged between the connecting tube and the vacuum chamber, measures the indoor vacuum values of the vacuum；
The vacuum measuring gauge is electrically connected with the vacuum gauge, for showing the vacuum values；
The temperature sensor is arranged on the junction of the vacuum chamber and the connecting tube, measures the indoor temperature of the vacuum
Number of degrees value；
The temperature controller, the temperature controller is electrically connected with the temperature sensor, for showing the temperature value；
Ionisation chamber, the center of the X ray entrance port of the ionisation chamber and the central axis of the vacuum chamber coincide.
2. X ray air attenuation coefficient detecting system according to claim 1, which is characterized in that the detecting system is also
Including grating, the grating is arranged between the X ray exit portal of the X-ray machine and the vacuum chamber.
3. X ray air attenuation coefficient detecting system according to claim 1, which is characterized in that the vacuum extractor
Supporting rack is further included, support frame as described above includes pedestal, supporting rod, threaded rod and installing plate；
The pedestal, the upper surface of the pedestal are equipped with retainer ring；
The supporting rod, the supporting rod are hollow stem；One end of the supporting rod is fixed in the retainer ring；The support
The other end of bar is equipped with connector, and threaded hole is provided on the connector；
The threaded rod wears the connector by the threaded hole, and one end of the threaded rod is stretched into the supporting rod；
The installing plate is fixed on the other end of the threaded rod, for fixing the vacuum chamber.
4. X ray air attenuation coefficient detecting system according to claim 3, which is characterized in that the supporting rod and institute
It states and is slidably connected between connector, the height of the installing plate is adjusted by rotating the connector.
5. X ray air attenuation coefficient detecting system according to claim 3, which is characterized in that the retainer ring and institute
It states and is fixedly connected by reinforcing rib between pedestal.
6. X ray air attenuation coefficient detecting system according to claim 3, which is characterized in that the vacuum chamber includes
Vacuum tube, two beryllium windows and mounting bracket；
The vacuum tube, one end of the vacuum tube are equipped with mounting flange；The other end of the vacuum tube is equipped with opening flange, institute
It states and is provided with the vacuum orifice on opening flange；
Two beryllium windows are separately positioned on the mounting flange and the opening flange；
The mounting bracket, one end of the mounting bracket are fixedly mounted on the vacuum tube；The other end installation of the mounting bracket
On the installing plate, for fixing the vacuum chamber.
7. X ray air attenuation coefficient detecting system according to claim 6, which is characterized in that the mounting bracket and institute
It states and is bolted between installing plate.
8. X ray air attenuation coefficient detecting system according to claim 1, which is characterized in that the connecting tube uses
Bellows.
9. X ray air attenuation coefficient detecting system according to claim 1, which is characterized in that the vacuum pump and institute
The junction for stating connecting tube is equipped with shut-off valve.
10. X ray air attenuation coefficient detecting system according to claim 1, which is characterized in that the vacuum gauge uses
Film is advised.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428409.3A CN108196294A (en) | 2017-12-26 | 2017-12-26 | A kind of X ray air attenuation coefficient detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428409.3A CN108196294A (en) | 2017-12-26 | 2017-12-26 | A kind of X ray air attenuation coefficient detecting system |
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| CN108196294A true CN108196294A (en) | 2018-06-22 |
Family
ID=62584080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711428409.3A Pending CN108196294A (en) | 2017-12-26 | 2017-12-26 | A kind of X ray air attenuation coefficient detecting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110501362A (en) * | 2019-07-31 | 2019-11-26 | 中国科学院合肥物质科学研究院 | The transmitting device of X-ray under a kind of high-intensity magnetic field |
| RU2824296C1 (en) * | 2023-10-09 | 2024-08-07 | Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" | X-ray and optical monophoton sensors adjustment and calibration stand |
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| US6528797B1 (en) * | 1999-04-16 | 2003-03-04 | The Regents Of The University Of Michigan | Method and system for determining depth distribution of radiation-emitting material located in a source medium and radiation detector system for use therein |
| CN105512451A (en) * | 2014-09-25 | 2016-04-20 | 国家电网公司 | Transformer noise calculating method |
| CN206557060U (en) * | 2017-01-18 | 2017-10-13 | 西安航空学院 | A kind of powder concentration measurement system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501362A (en) * | 2019-07-31 | 2019-11-26 | 中国科学院合肥物质科学研究院 | The transmitting device of X-ray under a kind of high-intensity magnetic field |
| RU2824296C1 (en) * | 2023-10-09 | 2024-08-07 | Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" | X-ray and optical monophoton sensors adjustment and calibration stand |
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Application publication date: 20180622 |