CN107884803B - Heat-releasing light irradiator - Google Patents
Heat-releasing light irradiator Download PDFInfo
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- CN107884803B CN107884803B CN201711220344.3A CN201711220344A CN107884803B CN 107884803 B CN107884803 B CN 107884803B CN 201711220344 A CN201711220344 A CN 201711220344A CN 107884803 B CN107884803 B CN 107884803B
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- irradiation
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- thermoluminescent
- source
- light irradiator
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- 230000005855 radiation Effects 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000000904 thermoluminescence Methods 0.000 abstract description 4
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 238000012216 screening Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100000673 dose–response relationship Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
- G01T1/11—Thermo-luminescent dosimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
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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)
- Measurement Of Radiation (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention belongs to the technical field of auxiliary instruments of radiation equipment, belongs to a part of a thermoluminescence measurement system, and particularly relates to a thermoluminescence light irradiator. The invention discloses a thermoluminescent light irradiator which is a key instrument matched with a thermoluminescent dosimeter and comprises a main body 1, a disc 2, a sample disc 3, an irradiation source 4, a stepping motor 5, an upper cover 6, a display screen 7 and a keyboard 8, wherein the thermoluminescent light irradiator is used for irradiating thermoluminescent elements subjected to annealing treatment so as to screen and scale the thermoluminescent light irradiator. When in use, according to the required irradiation dose setting parameters, the instrument can be used for placing a plurality of thermoluminescent dosage elements at a time.
Description
Technical Field
The invention belongs to the technical field of auxiliary instruments of radiation equipment, belongs to a part of a thermoluminescence measurement system, and particularly relates to a thermoluminescence light irradiator.
Background
The pyroelectric light irradiator is matched with a pyroelectric reader, a pyroelectric annealing furnace and a pyroelectric detector to form a pyroelectric measuring system. The thermoluminescent light irradiator irradiates the thermoluminescent detector (namely the dosage element) after annealing treatment so as to screen the thermoluminescent detector and scale the thermoluminescent dosemeter, provides a relative standard radiation field and plays a role in calibrating dosage. Meanwhile, the method can also be used for other small samples (such as irradiation on quartz mineral powder samples of the ground mineral system) to carry out small dose irradiation.
There are many types of thermoluminescent dosage elements currently in use, but they must be screened before new dosage elements can be used. Screening is essentially the same batch of dosage elements that achieve substantially the same dose response, repeatability and dispersibility based on meeting measurement precision and accuracy requirements. In other words, the components with better consistency are screened out from the same batch of components.
And the pyroelectric light irradiator provides standard radiation conditions for radiation dose measurement and standard radiation samples. In general, a standard radiation field is to be established in a certain sense. At present, three types of standard radiation fields exist in China: (1) A national standard radiation field established by a national measurement standard department; (2) A regional standard radiation field (or referred to as a secondary standard radiation field) established by a regional metering department that is delivered by comparison with a national standard radiation field; (3) Laboratory standard radiation fields delivered by reference instruments calibrated to national or regional metering department standard radiation fields (or laboratories). The pyroelectric light irradiator belongs to the class 3 standard radiation field.
Since the dose of radiation required for screening the pyroelectric dosage element is relatively small and a new dosage element is required to be screened every time, the first two types of standard radiation fields are not suitable for all aspects, and for convenience in use and operation, development of an intelligent pyroelectric light irradiator is needed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a pyroelectric light irradiator which is used for quantitatively irradiating an annealed pyroelectric element by setting a standard radiation field into the pyroelectric light irradiator to achieve the purpose of calibrating dose.
In order to achieve the purpose, the invention adopts the following technical scheme:
the thermoluminescent device comprises a main body, a disc, a sample disc, an irradiation source, a stepping motor, an upper cover, a display screen and a keyboard, wherein the standard irradiation field is arranged in the thermoluminescent device to play a role in calibrating dose, and the thermoluminescent device is subjected to annealing treatment;
the main body is of an integral appearance structure of the pyroelectric light irradiator;
the disc is a metal disc which is controlled by a stepping motor and rotates at a constant speed, and sample discs which are uniformly distributed at equal intervals are arranged on the disc and are used for placing a thermoluminescent dosage element to be irradiated;
the stepping motor drives the disc to rotate according to the preset speed and the calculated revolution during irradiation so as to realize irradiation; the stepping motor rotates and feeds back the current number of turns, and the number of the remaining turns to be turned is displayed on a display screen; when the preset number of turns is reached, stopping the stepping motor;
the irradiation source with fixed position is arranged at one side of the disk, the irradiation source is an irradiation standard source with known calibration activity, the decay activity is calculated according to the current use date when the disk is used, and when the pyroelectric dosage element is quantitatively irradiated under the standard radiation field of the pyroelectric light irradiator, the pyroelectric dosage element is uniformly arranged on the rotating disk, so that the pyroelectric dosage element passes through an irradiation window to obtain the irradiation with set quantity;
a stepping motor for controlling the rotation of the disc is arranged below the disc, and an upper cover, a display screen and a keyboard are arranged on the disc;
the upper cover is covered after the thermoluminescent dosage element is loaded during the non-use period of the instrument and the use time;
the display screen is used for displaying the current set date, the required irradiation amount, the total rotation number and the residual rotation number;
the keyboard is used for key input, including the current date, the dose to be irradiated and the start and pause operations of the control instrument.
Further, a pyroelectric light irradiator as described above, when applied, the known parameters include: calibration Activity A of Standard Source 0 The distance R between the thermoluminescent dosage element and the source, the speed W at which the disk rotates;
the internal program of the instrument automatically calculates the current activity of the irradiation source according to the input date, and calculates the number of revolutions of the disc to be rotated when the irradiation amount required by the irradiation of the thermoluminescent dosage element is X in combination with other known parameters.
Further, as described above, a pyroelectric light irradiator in which an internal program performs data processing based on an inputted start-up date and a required irradiation amount, calculates the activity of an irradiation source first, and calculates the time t required to irradiate each element based on the required irradiation amount Xi according to formula 1 1 ；
Solving for T according to equation 2;
T＝B*n*t 1 equation 2
According to the physical function relation between T and the preset rotating speed W, the total rotating cycle number N is obtained according to a formula 3:
n=t/W equation 3
Wherein: x is X i The dose to be irradiated for the ith thermoluminescent dosage element;
Γ is the source illumination conversion coefficient;
A 0 e -λt for timely activity, t is the decay time of the source from calibration to measurement;
t is the total irradiation time;
b is a correction coefficient set in consideration of the sample gap;
n is the number of evenly distributed sample plates 3 on the disc 2.
The technical scheme of the invention has the beneficial effects that: the invention relates to a thermoluminescent light irradiator which is a key instrument matched with a thermoluminescent dosimeter and is provided with a thermoluminescent reader for irradiating thermoluminescent elements subjected to annealing treatment so as to screen the thermoluminescent elements and scale the thermoluminescent reader. When in use, according to the required irradiation dose setting parameters, the instrument can be used for placing a plurality of thermoluminescent dosage elements at a time.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
In the figure: the device comprises a main body 1, a disc 2, a sample disc 3, an irradiation source 4, a stepping motor 5, an upper cover 6, a display screen 7 and a keyboard 8.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings and specific embodiments.
The thermoluminescent device comprises a main body 1, a disc 2, a sample disc 3, an irradiation source 4, a stepping motor 5, an upper cover 6, a display screen 7 and a keyboard 8, wherein a standard radiation field is arranged in the thermoluminescent device to play a role in calibrating dose, and the thermoluminescent device is subjected to annealing treatment;
the main body 1 is the whole outline structure of the pyroelectric light irradiator;
the disc 2 is a metal disc which is controlled by a stepping motor 5 to rotate at a constant speed, and 37 sample discs 3 which are uniformly distributed at equal intervals are arranged on the disc 2 and are used for placing thermoluminescent dosage elements to be irradiated;
the stepping motor 5 drives the disc 2 to rotate according to the preset speed and the calculated revolution during irradiation to realize irradiation; the stepping motor 5 rotates and feeds back the current number of turns, and the number of the remaining turns to be turned is displayed on the display screen 7; when the preset number of turns is reached, the stepping motor 5 stops acting;
one side of the disc 2 is provided with an irradiation source 4 at a fixed position, the irradiation source 4 is an irradiation standard source with known calibration activity, the decay activity of the irradiation source is calculated according to the current use date when the irradiation source is used, and when the thermoluminescent dosage element is quantitatively irradiated under the standard irradiation field of the thermoluminescent illuminator, the thermoluminescent dosage element is uniformly arranged on the rotating disc 2, and the thermoluminescent dosage element passes through an irradiation window to obtain the irradiation with a set quantity;
a stepping motor 5 for controlling the rotation of the disc is arranged below the disc 2, and an upper cover 6, a display screen 7 and a keyboard 8 are arranged on the disc;
the upper cover 6 is covered after loading the thermoluminescent dosage element during non-use of the instrument and at the time of use;
the display screen 7 is used for displaying the current set date, the required irradiation amount, the total rotation number and the residual rotation number;
the keyboard 8 is used for key input, including the current date, the dose to be irradiated and controlling the start and pause operations of the instrument.
When the pyroelectric light illuminator is applied, known parameters include: calibration Activity A of Standard Source 4 0 The distance R between the thermoluminescent dosage element and the source, the speed W at which the disc 2 rotates;
the internal program of the instrument automatically calculates the current activity of the irradiation source 4 according to the input date, and when the irradiation amount required by the irradiation of the thermoluminescent dosage element is X, the rotation number of the disc 2 is calculated by combining other known parameters.
The internal program of the pyroelectric light irradiator performs data processing according to the input starting date and the required irradiation amount, firstly calculates the activity of the irradiation source, and according to the formula 1, the required irradiation amount X i Calculating the time t of each element to be irradiated 1 ；
Solving for T according to equation 2;
T＝B*n*t 1 equation 2
According to the physical function relation between T and the preset rotating speed W, the total rotating cycle number N is obtained according to a formula 3:
n=t/W equation 3
Wherein: x is X i The dose to be irradiated for the ith thermoluminescent dosage element;
Γ is the source illumination conversion coefficient;
A 0 e -λt for timely activity, t is the decay time of the source from calibration to measurement;
t is the total irradiation time;
b is a correction coefficient set in consideration of the sample gap;
n is the number of evenly distributed sample plates 3 on the disc 2.
The invention discloses a heat release light irradiator which adopts a method that the position of an irradiation source is fixed, dosage elements are uniformly placed on a rotating disc, and the dosage elements sequentially pass through an irradiation window to obtain a certain amount of irradiation. The radiation source used by the pyroelectric light irradiator must be measured and identified, which accords with the standard of the present grade; and the precision is required to meet the requirements of ensuring that the geometric position between the dosage element and the source can be repeated so as to ensure the accuracy of the irradiation dose of each standard sample.
The application of the pyroelectric light irradiator in pyroelectric light measurement mainly has three aspects: screening of thermoluminescent dosage elements, graduated thermoluminescent readers and irradiation of other samples. The pyroelectric light irradiation device is therefore a very important component in a pyroelectric measuring system.
Claims (1)
1. The utility model provides a pyro-luminescent light irradiator, built-in standard radiation field plays the purpose of demarcating the dose, carries out quantitative irradiation to pyro-luminescent component through annealing treatment, its characterized in that: the device comprises a main body (1), a disc (2), a sample disc (3), an irradiation source (4), a stepping motor (5), an upper cover (6), a display screen (7) and a keyboard (8);
the main body (1) is of an integral appearance structure of the pyroelectric light irradiator;
the disc (2) is a metal disc which is controlled by a stepping motor (5) and rotates at a constant speed, and 37 sample discs (3) which are uniformly distributed at equal intervals are arranged on the disc (2) and are used for placing thermoluminescent dosage elements to be irradiated;
the stepping motor (5) drives the disc (2) to rotate according to the preset speed and the calculated revolution during irradiation so as to realize irradiation; the stepping motor (5) feeds back the current number of turns and displays the number of the remaining turns to be turned on the display screen (7) while rotating; when the preset number of turns is reached, the stepping motor (5) stops acting;
one side of the disk (2) is provided with an irradiation source (4) at a fixed position, the irradiation source (4) is an irradiation standard source with known calibration activity, the decay activity of the irradiation source is calculated according to the current use date when the irradiation source is used, and when the pyroelectric dosage element is quantitatively irradiated under the standard irradiation field of the pyroelectric light irradiator, the pyroelectric dosage element is uniformly placed on the rotating disk (2) and passes through an irradiation window to obtain the irradiation of a set quantity;
a stepping motor (5) for controlling the rotation of the disc is arranged below the disc (2), an upper cover (6), a display screen (7) and a keyboard (8) are arranged on the disc;
the upper cover (6) is covered after the thermoluminescent dosage element is loaded during the non-use period of the instrument and the use period;
the display screen (7) is used for displaying the current set date, the required irradiation amount, the total rotation number and the residual rotation number;
the keyboard (8) is used for key input, including the current date, the dose to be irradiated and the start and pause operations of the control instrument;
when the pyroelectric light illuminator is applied, known parameters include: calibration Activity A of Standard Source (4) 0 A distance R between the thermoluminescent dosage element and the source, a speed W at which the disk (2) rotates;
the internal program of the instrument automatically calculates the current activity of the irradiation source (4) according to the input date, and when the irradiation amount required by the irradiation of the thermoluminescent dosage element is X, the revolution of the disc (2) to be rotated is calculated by combining other known parameters;
the internal program of the pyroelectric light irradiator performs data processing according to the input start-up date and the required irradiation amount,firstly, calculating the activity of an irradiation source, and according to a formula (1), according to the required irradiation amount X i Calculating the time t of each element to be irradiated 1 ；
According to formula (2), calculate T;
T＝B*n*t 1 formula (2)
According to a physical function relation between T and a preset rotating speed W, a total rotating cycle number N is obtained according to a formula (3):
n=t/W formula (3)
Wherein: x is X i The dose to be irradiated for the ith thermoluminescent dosage element;
Γ is the source illumination conversion coefficient;
A 0 e -λt for timely activity, t is the decay time of the source from calibration to measurement;
t is the total irradiation time;
b is a correction coefficient set in consideration of the sample gap;
n is the number of evenly distributed sample plates (3) on the disc (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220344.3A CN107884803B (en) | 2017-11-29 | 2017-11-29 | Heat-releasing light irradiator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711220344.3A CN107884803B (en) | 2017-11-29 | 2017-11-29 | Heat-releasing light irradiator |
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| CN107884803A CN107884803A (en) | 2018-04-06 |
| CN107884803B true CN107884803B (en) | 2024-03-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444112A (en) * | 2018-12-14 | 2019-03-08 | 东华理工大学 | A kind of soil natural thermoluminescence survey sample amounts control device and method |
| CN110907983B (en) * | 2019-11-29 | 2022-10-18 | 成都理工大学 | Thermoluminescent dosimeter measuring method for monitoring ionizing radiation dose |
| CN112346026B (en) * | 2020-10-21 | 2022-11-25 | 中国辐射防护研究院 | System and method for testing total dose radiation resistance of distance measuring sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656814A (en) * | 1995-05-29 | 1997-08-12 | Tsl Industrial Instruments Ltd. | Versatile method and device for thermoluminescence comparative analysis |
| CN101158722A (en) * | 2006-02-10 | 2008-04-09 | 中国人民解放军63960部队 | Personal dose-meter calibrating panorama irradiation device |
| WO2011064258A1 (en) * | 2009-11-24 | 2011-06-03 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method for determining an operational quantity enabling simplified and optimized management of irradiated samples in equipment and ensuring compliance with safety goals |
| CN103037933A (en) * | 2010-06-04 | 2013-04-10 | 梅德拉公司 | Activity delivery progress monitor |
| CN204790010U (en) * | 2015-06-01 | 2015-11-18 | 中国计量科学研究院 | Irradiation capsule and radiation field dose distribution detection device |
| CN208255427U (en) * | 2017-11-29 | 2018-12-18 | 中核控制系统工程有限公司 | A kind of thermoluminescence illuminator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7439524B2 (en) * | 2004-09-02 | 2008-10-21 | Abraham Katzir | Thermoluminescence measurements and dosimetry with temperature control of the thermoluminescence element |
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- 2017-11-29 CN CN201711220344.3A patent/CN107884803B/en active Active
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|---|---|---|---|---|
| US5656814A (en) * | 1995-05-29 | 1997-08-12 | Tsl Industrial Instruments Ltd. | Versatile method and device for thermoluminescence comparative analysis |
| CN101158722A (en) * | 2006-02-10 | 2008-04-09 | 中国人民解放军63960部队 | Personal dose-meter calibrating panorama irradiation device |
| WO2011064258A1 (en) * | 2009-11-24 | 2011-06-03 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method for determining an operational quantity enabling simplified and optimized management of irradiated samples in equipment and ensuring compliance with safety goals |
| CN103037933A (en) * | 2010-06-04 | 2013-04-10 | 梅德拉公司 | Activity delivery progress monitor |
| CN204790010U (en) * | 2015-06-01 | 2015-11-18 | 中国计量科学研究院 | Irradiation capsule and radiation field dose distribution detection device |
| CN208255427U (en) * | 2017-11-29 | 2018-12-18 | 中核控制系统工程有限公司 | A kind of thermoluminescence illuminator |
Non-Patent Citations (2)
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