CN117870500A - Gamma ray irradiation test distance measuring device and distance measuring method - Google Patents
Gamma ray irradiation test distance measuring device and distance measuring method Download PDFInfo
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- CN117870500A CN117870500A CN202410048883.7A CN202410048883A CN117870500A CN 117870500 A CN117870500 A CN 117870500A CN 202410048883 A CN202410048883 A CN 202410048883A CN 117870500 A CN117870500 A CN 117870500A
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- 230000005251 gamma ray Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005855 radiation Effects 0.000 claims abstract description 62
- 238000005259 measurement Methods 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 14
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a gamma ray irradiation test distance measuring device and a distance measuring method, which are used for solving the technical problems of measuring errors, reading errors and the like of the existing distance measuring method, wherein the distance measuring device comprises a fixed ring and a distance measuring unit; the fixed ring is sleeved outside the source protection cover of the radiation source and comprises two arc sections which are connected with each other, and the outer cambered surfaces of the arc sections are respectively provided with a sliding rail; the ranging unit comprises a range finder and a mounting bracket, and the mounting bracket comprises a supporting frame and an arc-shaped mounting piece; one end of the support frame is vertically arranged on the outer cambered surface of the arc-shaped mounting piece along the radial direction, and the inner cambered surface of the arc-shaped mounting piece is in sliding connection with the sliding rail of the arc section; the support frame is provided with a mounting groove for installing the range finder, and the measuring end of the range finder is far away from the radiation source, and the range finder is used for determining the placement position of a sample to be measured. In addition, the invention also provides a ranging method based on the ranging device.
Description
Technical Field
The invention relates to a ranging device, in particular to a gamma ray irradiation test ranging device and a ranging method.
Background
The gamma-ray irradiation test is an irradiation test which is carried out on a semiconductor electronic component and can bear the total ionization dose of gamma rays, and the gamma rays cannot be directly observed and can cause serious damage to the semiconductor electronic component, so that the total ionization dose tolerance of the semiconductor electronic component in the irradiation environment in the aerospace field and the like is required to be inspected through the irradiation test.
In the irradiation test, the irradiation test has 1 extremely important parameter, namely the dosage rate, the currently commonly used radiation source is a cobalt 60 radiation source, and the dosage rate determination and the distance between a sample to be tested and the radiation source have close relations, so that the distance measurement is very important for the dosage rate determination.
In the prior art, a common ranging method is to directly measure by using a tape measure or a ruler, which has the following disadvantages:
(1) Because the radiation source dose rate is distributed in a certain longitudinal height range and is a cylindrical surface taking the radiation source as a central axis, when measuring by using a tape measure or a ruler, if the measuring path is not coincident with the diameter of the radiation source cylinder, the error of the measuring distance is easily caused.
(2) When a measurer reads the scales of the ruler, if eyes are not right opposite to the ruler, reading errors can be caused.
(3) When the ruler or the tape measure is used, one end of the ruler or the tape measure is required to be abutted on the source protection cover of the radiation source, and the other end of the ruler or the tape measure is abutted on the surface of the sample, so that one end of the ruler or the tape measure cannot be abutted on the surface of the sample directly, and only the measurement error is caused.
Disclosure of Invention
The invention aims to provide a gamma ray irradiation test distance measuring device and a distance measuring method, which are used for solving the technical problems of measuring errors, reading errors and the like of the existing distance measuring method.
In order to achieve the above object, the technical solution of the present invention is as follows:
the gamma ray irradiation test distance measuring device is used for measuring the distance between a sample to be measured and a radiation source, and is characterized in that:
comprises a fixed ring and a ranging unit;
the fixing ring is sleeved outside the source protection cover of the radiation source and comprises two arc sections which are connected with each other, and the outer cambered surfaces of the arc sections are respectively provided with a sliding rail;
the distance measuring unit comprises a distance measuring instrument and a mounting bracket, and the mounting bracket comprises a supporting frame and an arc-shaped mounting piece;
one end of the support frame is vertically arranged on the outer cambered surface of the arc-shaped mounting piece along the radial direction, and the inner cambered surface of the arc-shaped mounting piece is in sliding connection with the sliding rail of the arc section; the support frame is provided with a mounting groove, a distance meter is mounted in the mounting groove, the measuring end of the distance meter is far away from the radiation source and faces the sample to be measured, and the distance meter is used for determining the placement position of the sample to be measured.
Further, a plurality of grooves are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece, a magnet is respectively mounted in each groove, and the inner cambered surface of the arc-shaped mounting piece is magnetically attracted with the sliding rail of the arc section under the action of the magnet.
Further, one end of the two circular arc sections is hinged with each other, the outer sides of the other ends of the two circular arc sections are respectively provided with a connecting lug, the connecting lugs are respectively provided with connecting holes, and the screws penetrate through the connecting holes to fixedly connect the other ends of the two circular arc sections.
Meanwhile, the invention also provides a gamma ray irradiation test distance measuring method, which adopts the gamma ray irradiation test distance measuring device and is characterized by comprising the following steps:
step 1, mounting a fixing ring on a source protection cover of a radiation source;
step 2, presetting a length measurement reference of the range finder according to the distance requirement of the sample to be measured and the radiation source, and then installing the range finder on a support frame of an installation bracket so that the measurement end of the range finder is far away from the radiation source and faces the sample to be measured;
step 3, installing an arc-shaped installation piece of the installation support on a sliding rail of the arc section, so that an optical path of the emergent light of the range finder is parallel to an installation reference surface of the radiation source;
and 4, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until the light spot of the emergent light of the range finder irradiates the sample to be measured, and the distance displayed by the range finder accords with a preset length measurement reference, so that the measurement of the distance between the radiation source and the sample to be measured is completed.
In step 3, the arc-shaped mounting piece of the mounting bracket is mounted on the sliding rail of the arc section through magnetic force attraction.
In addition, the invention also provides another gamma-ray irradiation test distance measuring device for measuring the distance between a sample to be measured and a radiation source, which is characterized in that:
comprises a fixed ring and a ranging unit;
the fixing ring is sleeved outside the source protection cover of the radiation source and comprises two arc sections which are connected with each other, and the outer cambered surfaces of the arc sections are respectively provided with a sliding rail;
the ranging unit comprises a measuring rod and an arc-shaped mounting piece;
one end part of the measuring rod is vertically fixed on the outer cambered surface of the arc-shaped mounting piece along the radial direction, and the other end part of the measuring rod is used for being contacted with the surface of a sample to be measured; the inner cambered surface of the arc-shaped mounting piece is in sliding connection with the sliding rail of the arc section.
Further, a plurality of grooves are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece, a magnet is respectively arranged in each groove, and the inner cambered surface of the arc-shaped mounting piece is magnetically attracted with the sliding rail of the arc section under the action of the magnet.
Further, the distance measuring units are multiple, the arc-shaped mounting piece of each distance measuring unit is provided with a distance mark, the distance marks correspond to measuring rods with different lengths, and the length of each measuring rod is 2-18 cm.
Further, one end of the two circular arc sections is hinged with each other, the outer sides of the other ends of the two circular arc sections are respectively provided with a connecting lug, the connecting lugs are respectively provided with connecting holes, and the screws penetrate through the connecting holes to fixedly connect the other ends of the two circular arc sections.
Meanwhile, the invention also provides another gamma-ray irradiation test distance measuring method, which adopts the other gamma-ray irradiation test distance measuring device and is characterized by comprising the following steps:
step 1, mounting a fixing ring on a source protection cover of a radiation source;
step 2, selecting a measuring rod with a corresponding length according to the distance requirement of a sample to be measured and the radiation source, and installing an arc-shaped installation piece on a sliding rail of the arc section so that the measuring rod is parallel to an installation reference surface of the radiation source;
and 3, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until one end of the measuring rod, which is far away from the radiation source, is contacted with the surface of the sample to be measured, so that the distance between the radiation source and the sample to be measured is measured.
Compared with the prior art, the invention has the following beneficial effects:
1. the gamma-ray irradiation test distance measuring device comprises a fixed ring and a distance measuring unit, wherein the distance measuring unit comprises a distance measuring instrument and a mounting bracket, the mounting bracket comprises a support frame and an arc-shaped mounting piece, one end part of the support frame is vertically arranged on the outer arc surface of the arc-shaped mounting piece along the radial direction, the inner arc surface of the arc-shaped mounting piece is in sliding connection with a sliding rail of the arc section, the distance measuring instrument is arranged in a mounting groove of the support frame, the whole structure is simple, the mounting is convenient, and compared with the existing distance measuring method, the distance between a sample to be measured and a radiation source can be accurately measured, and further the effective development of an irradiation test is ensured.
2. The gamma-ray irradiation test distance measuring device can also design the distance measuring unit to comprise a measuring rod and an arc-shaped mounting piece, wherein one end part of the measuring rod is vertically fixed on the outer cambered surface of the arc-shaped mounting piece along the radial direction, the other end part of the measuring rod is used for being in contact with the surface of a sample to be measured, and the inner cambered surface of the arc-shaped mounting piece is in sliding connection with the sliding rail of the arc section, so that the distance measuring device capable of rapidly and accurately measuring the distance between the sample to be measured and the radiation source is provided.
3. According to the gamma-ray irradiation test distance measuring device, the plurality of grooves are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece, the magnet is respectively arranged in each groove, and the inner cambered surface of the arc-shaped mounting piece is magnetically attracted with the sliding rail of the arc section under the action of the magnet, so that the mounting efficiency of the distance measuring unit during measurement is improved, and the measurement efficiency is further improved.
4. In the gamma-ray irradiation test distance measuring device, one ends of the two circular arc sections of the fixed ring are mutually hinged, and the other ends of the two circular arc sections are connected with the connecting lugs through the screws.
5. According to the gamma ray irradiation test ranging method, the measuring standard of the range finder is preset, or the measuring rod with the corresponding length is selected, so that the distance between the sample to be measured and the radiation source can meet the requirements of an irradiation test, and the ranging method is simple, high in precision and high in applicability.
Drawings
Fig. 1 is a schematic structural diagram of a gamma-ray irradiation test ranging apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a fixing ring in a first embodiment of a gamma-ray irradiation test ranging apparatus according to the present invention.
Fig. 3 is a schematic structural view of a mounting bracket in a first embodiment of a gamma-ray irradiation test ranging apparatus according to the present invention.
Fig. 4 is a reference diagram of the usage state of the rangefinder in the first embodiment of the gamma-ray irradiation test rangefinder of the present invention.
Fig. 5 is a schematic structural diagram of a ranging unit in a second embodiment of the gamma-ray irradiation test ranging apparatus according to the present invention.
The reference numerals are as follows:
the device comprises a fixing ring 1, an arc section 11, a connecting lug 12, a 2-range finder, a 3-mounting bracket 31, a support frame 32, an arc-shaped mounting piece 321, a groove 322, a magnet and a 4-measuring rod.
Detailed Description
The invention will be described in detail below with reference to the drawings and the specific embodiments.
Example 1
As shown in fig. 1 to 3, the present embodiment provides a gamma-ray irradiation test ranging apparatus for measuring a distance between a sample to be measured and a radiation source, the ranging apparatus including a fixing ring 1 and a ranging unit.
The fixed ring 1 is sleeved on the outer side of a source protection cover of the radiation source and comprises two arc sections 11 which are connected with each other, one ends of the two arc sections 11 are hinged with each other, connecting lugs 12 are respectively arranged on the outer sides of the other ends of the two arc sections, connecting holes are respectively formed in the connecting lugs 12, and screws penetrate through the connecting holes to fixedly connect the other ends of the two arc sections 11. The outer cambered surface of the circular arc section 11 is also respectively provided with a sliding rail.
The distance measuring unit comprises a distance measuring instrument 2 and a mounting bracket 3, wherein the mounting bracket 3 comprises a supporting frame 31 and an arc-shaped mounting piece 32. One end of the supporting frame 31 is vertically arranged on the outer cambered surface of the arc-shaped mounting piece 32 along the radial direction, and the inner cambered surface of the arc-shaped mounting piece 32 is in sliding connection with the sliding rail of the arc section 11; the support frame 31 is provided with a mounting groove, the range finder 2 is mounted in the mounting groove, the measuring end of the range finder 2 is far away from the radiation source and faces the sample to be measured, and the range finder 2 is used for determining the placement position of the sample to be measured. The distance meter 2 is generally used for measuring the distance of 16.6 cm-50 m, the measurement accuracy is generally +/-1.5 mm, and the accuracy is high.
A plurality of grooves 321 are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece 32, a magnet 322 is respectively mounted in each groove 321, and the inner cambered surface of the arc-shaped mounting piece 32 is magnetically attracted with the sliding rail of the arc section 11 under the action of the magnet 322.
Meanwhile, the embodiment also provides a gamma ray irradiation test ranging method, which comprises the following steps:
step 1, mounting the fixing ring 1 on a source protection cover of a radiation source, generally enabling the upper edge of the fixing ring to be basically overlapped with a marking line on the source protection cover, sequentially penetrating through connecting holes on two circular arc sections 11 by adopting screws, and screwing nuts, so that the fixing ring 1 is fastened on the source protection cover to prevent the fixing ring from sliding off.
And 2, presetting a length measurement reference of the range finder 2 according to the distance requirement of a sample to be measured and a radiation source, wherein the range finder 2 is a common laser range finder, the setting method is to open the laser range finder, select the length measurement, set a measurement mode as continuous measurement, and select the bottom of the range finder as the measurement reference. The rangefinder 2 is then mounted on the support frame 31 of the mounting bracket 3 such that the measuring end of the rangefinder 2 is remote from the radiation source and directed towards the sample to be measured.
And 3, installing the arc-shaped installation piece 32 of the installation support 3 on the sliding rail of the arc section 11 through magnetic attraction, so that the light path of the emergent light of the range finder 2 is parallel to the installation reference surface of the radiation source. After the laser range finder is installed, a level indicator mark of the laser range finder is checked, and the level indicator mark is green, so that the laser range finder can normally measure the distance. If the color is yellow, the position of the fixing ring 1 should be readjusted so that the upper edge of the fixing ring coincides with the marking line on the source protecting cover, and the specific adjusting method is the same as that in the step 1.
And 4, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until the light spot of the light emitted by the range finder 2 irradiates the sample to be measured, and the distance displayed by the range finder 2 accords with a preset length measurement reference, so that the measurement of the distance between the radiation source and the sample to be measured is completed.
After the distance measurement is finished, the position mark of the sample to be measured is made, the distance meter 2 is closed, the distance meter 2 and the mounting bracket 3 are taken down from the fixed ring 1, the fixed ring 1 is taken down from the source protection cover, and then the irradiation test is started.
In this embodiment, L is the irradiation test dose rate position distance, and the distance meter 2 shows the distance L as shown in FIG. 4 J R is the radius of the source protection cover, L 1 For the vertical distance from the center of the source protecting cover to the end face of the distance meter 2, which is close to one end of the source protecting cover, the following steps are provided:
L＝L J +L 1 -R
in actual use, L is measured J Thus, in measuring L J After that, L should be added 1 The difference from R (here 1.6cm in this example) is the position distance of the dose rate. For example, when the dose rate is 50rad (Si)/s and the position distance L is 50.5cm, the distance displayed by the rangefinder should be 48.9cm when the rangefinder is used.
It should be noted that the laser light is strictly forbidden to direct the human eye during ranging using the range finder 2. In addition, after ranging, the fixing ring and the ranging unit must be removed from the source protection cover, otherwise, the radiation source is shielded, so that the dose rate is inaccurate in the irradiation test.
Example two
The embodiment provides another gamma ray irradiation test distance measuring device, which comprises a fixed ring 1 and a distance measuring unit. The difference from the first embodiment is that the distance measuring unit comprises a measuring rod 4 and an arc-shaped mounting 32 (shown in fig. 5).
Since the shortest measurement distance of the laser range finder is 15cm, when the distance of the dose rate position is less than 16.6cm, other methods are needed to measure the distance, and the measurement block (namely, the representative ranging unit) formed by the measuring rod 4 and the arc-shaped mounting member 32 is selected for carrying out the measurement in this embodiment. One end part of the measuring rod 4 is vertically fixed on the outer arc surface of the arc-shaped mounting piece 32 along the radial direction, and the other end part is used for contacting with the surface of the sample to be measured; the inner cambered surface of the arc-shaped mounting piece 32 is in sliding connection with the sliding rail of the arc section 11.
A plurality of grooves 321 are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece 32, a magnet 322 is respectively arranged in each groove 321, and the inner cambered surface of the arc-shaped mounting piece 32 is magnetically attracted with the sliding rail of the arc section 11 under the action of the magnet 322.
The arc-shaped mounting piece 32 is provided with distance marks, the distance marks correspond to measuring rods 4 with different lengths, the length of each measuring rod 4 is 2-18 cm, one measuring block with the corresponding length is selected according to specific measurement requirements, for example, the position distance L is 3.5cm when the dosage rate is 300rad (Si)/s, the measuring block with the mark of 3.5cm is selected, and the measuring precision of the measuring blocks is generally +/-1 mm.
Meanwhile, the embodiment also provides a gamma ray irradiation test ranging method based on a measuring block, and the specific method is similar to the ranging method in the first embodiment, and comprises the following steps:
and 1, mounting the fixing ring 1 on a source protection cover of the radiation source.
Step 2, according to the distance requirement between the sample to be measured and the radiation source, selecting a measuring rod 4 with a corresponding length (namely selecting a measuring block with a corresponding length), and mounting an arc-shaped mounting piece 32 on the sliding rail of the arc section 11 through magnetic attraction, so that the measuring rod 4 is parallel to the mounting reference surface of the radiation source.
And 3, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until one end of the measuring rod 4, which is far away from the radiation source, is contacted with the surface of the sample to be measured, so that the distance between the radiation source and the sample to be measured is measured.
And after the distance measurement is finished, making a position mark of the sample to be measured, taking down the distance measurement block from the fixed ring 1, taking down the fixed ring 1 from the source protection cover, and then starting the irradiation test.
Based on the above-described embodiments, it is sufficient for a person skilled in the art to carry out the invention, and any modifications based on the idea of the invention are considered to fall within the scope of protection of the invention within the framework of the claims.
Claims (10)
1. The utility model provides a gamma ray irradiation test range unit for measure the distance between sample and the radiation source that awaits measuring, its characterized in that:
comprises a fixed ring (1) and a ranging unit;
the fixing ring (1) is sleeved outside a source protection cover of the radiation source and comprises two arc sections (11) which are connected with each other, and sliding rails are respectively arranged on the outer cambered surfaces of the arc sections (11);
the ranging unit comprises a range finder (2) and a mounting bracket (3), wherein the mounting bracket (3) comprises a supporting frame (31) and an arc-shaped mounting piece (32);
one end of the supporting frame (31) is vertically arranged on the outer cambered surface of the arc-shaped mounting piece (32) along the radial direction, and the inner cambered surface of the arc-shaped mounting piece (32) is in sliding connection with the sliding rail of the arc section (11); the support frame (31) is provided with a mounting groove, a distance meter (2) is mounted in the mounting groove, the measuring end of the distance meter (2) is far away from the radiation source and faces to the sample to be measured, and the distance meter (2) is used for determining the placement position of the sample to be measured.
2. The gamma-ray irradiation test ranging apparatus as claimed in claim 1, wherein:
a plurality of grooves (321) are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece (32), a magnet (322) is respectively mounted in each groove (321), and the inner cambered surface of the arc-shaped mounting piece (32) is magnetically attracted with the sliding rail of the arc section (11) under the action of the magnet (322).
3. The gamma-ray irradiation test ranging apparatus according to claim 1 or 2, wherein:
one end of the two arc sections (11) is hinged with each other, the outer sides of the other ends of the two arc sections are respectively provided with a connecting lug (12), the connecting lugs (12) are respectively provided with connecting holes, and screws penetrate through the connecting holes to fixedly connect the other ends of the two arc sections (11).
4. A gamma ray irradiation test ranging method using the gamma ray irradiation test ranging apparatus as claimed in claim 1 or 2 or 3, comprising the steps of:
step 1, mounting a fixed ring (1) on a source protection cover of a radiation source;
step 2, presetting a length measurement reference of the range finder (2) according to the distance requirement of a sample to be measured and a radiation source, and then installing the range finder (2) on a support frame (31) of a mounting bracket (3) so that the measurement end of the range finder (2) is far away from the radiation source and faces the sample to be measured;
step 3, installing an arc-shaped installation piece (32) of the installation bracket (3) on a sliding rail of the arc section (11) so that a light path of the emergent light of the range finder (2) is parallel to an installation reference plane of the radiation source;
and 4, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until the light spot of the light emitted by the range finder (2) irradiates the sample to be measured, and the distance displayed by the range finder (2) accords with a preset length measurement standard, so that the measurement of the distance between the radiation source and the sample to be measured is completed.
5. The gamma ray irradiation test ranging method according to claim 4, wherein:
in the step 3, the arc-shaped mounting piece (32) of the mounting bracket (3) is mounted on the sliding rail of the arc section (11) in a magnetic attraction manner.
6. The utility model provides a gamma ray irradiation test range unit for measure the distance of sample and radiation source to be tested, its characterized in that:
comprises a fixed ring (1) and a ranging unit;
the fixing ring (1) is sleeved outside a source protection cover of the radiation source and comprises two arc sections (11) which are connected with each other, and sliding rails are respectively arranged on the outer cambered surfaces of the arc sections (11);
the ranging unit comprises a measuring rod (4) and an arc-shaped mounting piece (32);
one end part of the measuring rod (4) is vertically fixed on the outer cambered surface of the arc-shaped mounting piece (32) along the radial direction, and the other end part is used for being contacted with the surface of the sample to be measured; the inner cambered surface of the arc-shaped mounting piece (32) is in sliding connection with the sliding rail of the arc section (11).
7. The gamma-ray irradiation test ranging apparatus as set forth in claim 6, wherein:
a plurality of grooves (321) are uniformly distributed on the inner cambered surface of the arc-shaped mounting piece (32), a magnet (322) is arranged in each groove (321), and the inner cambered surface of the arc-shaped mounting piece (32) is magnetically attracted with the sliding rail of the arc section (11) under the action of the magnet (322).
8. The gamma-ray irradiation test ranging apparatus as set forth in claim 7, wherein:
the distance measuring units are multiple, the arc-shaped mounting piece (32) of each distance measuring unit is provided with a distance mark, the distance marks correspond to measuring rods (4) with different lengths, and the length of each measuring rod (4) is 2-18 cm.
9. The gamma-ray irradiation test ranging apparatus as set forth in claim 8, wherein:
one end of the two arc sections (11) is hinged with each other, the outer sides of the other ends of the two arc sections are respectively provided with a connecting lug (12), the connecting lugs (12) are respectively provided with connecting holes, and screws penetrate through the connecting holes to fixedly connect the other ends of the two arc sections (11).
10. A gamma ray irradiation test ranging method using the gamma ray irradiation test ranging apparatus according to any one of claims 6 to 9, comprising the steps of:
step 1, mounting a fixed ring (1) on a source protection cover of a radiation source;
step 2, selecting a measuring rod (4) with a corresponding length according to the distance requirement of a sample to be measured and a radiation source, and installing an arc-shaped installation piece (32) on a sliding rail of the arc section (11) so that the measuring rod (4) is parallel to an installation reference surface of the radiation source;
and 3, placing the sample to be measured in a radiation field, and adjusting the position of the sample to be measured until one end of the measuring rod (4) far away from the radiation source is contacted with the surface of the sample to be measured, thereby finishing the measurement of the distance between the radiation source and the sample to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410048883.7A CN117870500A (en) | 2024-01-12 | 2024-01-12 | Gamma ray irradiation test distance measuring device and distance measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410048883.7A CN117870500A (en) | 2024-01-12 | 2024-01-12 | Gamma ray irradiation test distance measuring device and distance measuring method |
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| CN117870500A true CN117870500A (en) | 2024-04-12 |
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| CN202410048883.7A Pending CN117870500A (en) | 2024-01-12 | 2024-01-12 | Gamma ray irradiation test distance measuring device and distance measuring method |
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- 2024-01-12 CN CN202410048883.7A patent/CN117870500A/en active Pending
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