CN111323373A - Ray-induced thermoluminescence characteristic measuring device - Google Patents

Ray-induced thermoluminescence characteristic measuring device Download PDF

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Publication number
CN111323373A
CN111323373A CN202010310369.8A CN202010310369A CN111323373A CN 111323373 A CN111323373 A CN 111323373A CN 202010310369 A CN202010310369 A CN 202010310369A CN 111323373 A CN111323373 A CN 111323373A
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sample
radiation
assembly
except
sample box
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CN202010310369.8A
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马恩
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Xiamen Huimeijizhi Technology Co ltd
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Xiamen Huimeijizhi Technology Co ltd
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Priority to CN202010310369.8A priority Critical patent/CN111323373A/en
Publication of CN111323373A publication Critical patent/CN111323373A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses a device for measuring ray-induced thermoluminescence characteristics, which has universality and expansibility and can be placed in a sample bin of a spectrometer to be used with the spectrometer. The device comprises: the sample box is assembled by six walls and comprises a top wall, a bottom wall and four side walls, and at least two of the rest walls of the sample box except the bottom wall are provided with assembling holes; the radiation source is used for generating radiation and is assembled on any one of the assembly holes; the temperature changing platform is connected with the bottom wall of the sample box and is used for adjusting the temperature of the sample to be detected; a detector for monitoring the luminous intensity of the sample; a light-transmitting window sheet for transmitting light and preventing radiation leakage; a radiation-protective plug for preventing radiation leakage and shading.

Description

Ray-induced thermoluminescence characteristic measuring device
Technical Field
The invention discloses a device for measuring ray-induced thermoluminescent characteristics, and belongs to the technical field of optical detection.
Background
When part of materials are irradiated by rays such as X rays, gamma rays and the like, defect centers are generated, after electrons are captured by the defect centers, the electrons in traps are slowly released and combined with holes to emit light or energy is transferred to sensitized centers to emit light due to thermal activation at the time of temperature rising, and the phenomenon is called thermoluminescence. The irradiation dose can be measured according to the intensity of the thermoluminescence, luminescent ions can be identified according to the spectrum of the thermoluminescence, and the energy level and the distribution information of the trap in the material can be obtained by analyzing the intensity, the wavelength and the peak shape of the thermoluminescence at different temperatures.
The existing device for measuring the characteristic of ray-induced thermoluminescence mainly adopts X-ray-induced thermoluminescence and is used for the radiation performance research of materials, such as the scintillation performance research of the materials, and the X-ray is required to be protected, so that the device is large in size and difficult to expand, and is particularly difficult to be placed in a sample bin or a darkroom of a spectrometer for being combined with the spectrometer due to the large size. There is a need to design a device for measuring the characteristics of thermoluminescence induced by rays, which provides a more flexible tool for the basic and application development of thermoluminescence materials through better expansion and general improvement.
Disclosure of Invention
The invention discloses a device for measuring the characteristics of ray-induced thermoluminescence, which has universality and expansibility and can be placed in a sample bin or a darkroom of a spectrometer for being used with the spectrometer. The device comprises: the sample box is assembled by six walls and comprises a top wall, a bottom wall and four side walls, and at least two of the rest walls of the sample box except the bottom wall are provided with assembling holes; the radiation source is used for generating rays, is assembled on any one assembling hole and comprises an atomic source, an electron source, an ion source, an X-ray source or a gamma-ray source; the temperature changing platform is connected with the bottom wall of the sample box and is used for adjusting the temperature of the sample to be detected; the detector is used for monitoring the luminous intensity of a sample and is assembled on one or more assembly holes except the assembly hole of the ray source, when the sample box is provided with at least two or more assembly holes except the assembly hole of the ray source, the detector is assembled on any one or more assembly holes except the assembly hole of the ray source, and the inner side of the detector is provided with the light-transmitting window sheet.
Optionally, when the sample box is provided with other assembly holes except the assembly holes for assembling the radiation source and the detector, the radiation protection plug is assembled on the other assembly holes except the assembly holes for assembling the radiation source and the detector, and the radiation protection plug is used for preventing radiation leakage and shading.
Optionally, when the sample box is provided with other assembly holes except the assembly holes for assembling the radiation source and the detector, the transparent window sheet is assembled on at least one other assembly hole except the assembly holes for assembling the radiation source and the detector; or the transparent window sheet is arranged on the sample box instead of at least one other wall except the wall for arranging the ray source and the wall and the bottom wall for arranging the detector; the light-transmitting window sheet is used for preventing radiation and transmitting light, and light emitted by the sample under the excitation of the rays is emitted out through the light-transmitting window sheet; when be equipped with on the remaining wall of sample box except that the diapire except that the assembly the radiation source with during all the other pilot holes except the pilot hole of printing opacity window sheet, except the assembly the radiation protection stopper is assembled on the radiation source with all the other pilot holes except that the printing opacity window sheet, the radiation protection stopper is used for preventing radiation leakage and shading.
Optionally, the radiation source is α radiation source, β radiation source, gamma ray source and X-ray source.
Optionally, the device further includes an optical fiber switching component, when the sample box is provided with an assembly hole for assembling the transparent window, the optical fiber switching component replaces the transparent window to be assembled on at least one assembly hole for assembling the transparent window, and the optical fiber switching component and the detector are assembled on different assembly holes.
Optionally, the material of the light-transmitting window sheet is any one of lead glass, barium fluoride, lithium fluoride, calcium fluoride and magnesium fluoride.
Optionally, the apparatus further includes a lifting support, the lifting support is located at the bottom of the sample box and is configured to adjust a position of the sample box in a vertical direction, the temperature changing table is disposed between the lifting support and the sample box, and the lifting support is further configured to adjust a position of the temperature changing table in the vertical direction.
Optionally, the device further comprises a sample holder, wherein the sample holder is located in the box body of the sample box and used for placing a sample to be detected to realize optical detection.
Optionally, the apparatus further includes a heat conducting connecting seat in the sample box, the heat conducting connecting seat may be disposed in the sample box and on the temperature changing table, and extends into the sample box from the temperature changing table through a through hole on the bottom wall, and the sample holder is disposed on the heat conducting connecting seat and detachably connected to the heat conducting connecting seat; the heat conduction connecting seat is made of heat conduction materials.
Optionally, a quartz cover is arranged outside the sample holder, and the quartz cover is used for sealing a sample to be detected inside the quartz cover and isolating external water vapor from entering the sample to be detected.
In the invention, the device can be independently applied to thermoluminescent detection, is placed in a sample bin of a spectrometer and adopts a spectrum detection system to receive a sample optical signal, or adopts a fiber spectrometer to receive the sample optical signal.
The invention can produce the beneficial effects that:
the device for measuring the ray-induced thermoluminescence characteristic provided by the invention is easy to expand, has good universality and light and handy design, and can be used independently. Can be placed in a sample cabin or a dark room of a common emission monochromator to be used with a spectrum detection system. The fiber can be connected for remote measurement. The radiation protection performance is good, and the test on a small-volume sample is convenient.
Drawings
FIG. 1 is an external view of a first embodiment of a device for measuring a thermoluminescent property induced by a ray
FIG. 2 is a view showing an internal structure of a pyroelectric characteristic measuring device in accordance with a first embodiment
FIG. 3 is an external view of a second embodiment of a device for measuring a thermoluminescent property induced by radiation
FIG. 4 is a view showing an internal structure of a second embodiment of a device for measuring a pyroelectric characteristic induced by rays
FIG. 5 is an internal structure view of the first and second embodiments of the device for measuring a radiation-induced thermoluminescent property
FIG. 6 is a view of the ray-induced thermoluminescent property measurement device in the sample chamber of the spectrometer
FIG. 7 is an external view and an internal structure of an optical fiber adapter module
FIG. 8 is an alternative side wall assembly view of a transparent window
Detailed Description
The technical solution of the present invention will be further described in detail with reference to specific embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
The device comprises a sample box, a temperature change table and an avalanche detector, wherein the sample box is formed by assembling six walls and comprises a top wall, a bottom wall and four side walls, at least two of the rest walls of the sample box except the bottom wall are provided with assembly holes and are made of radiation-proof materials, in an example, the sample box can be made of heavy metal materials, in particular, copper materials, the ray source is assembled on any one of the assembly holes, the ray source comprises an atomic source, an electron source, an ion source, an X-ray source or a gamma-ray source, in an example, the atomic source can be α ray source, the electron source can be β ray source, the type of the ray source is not limited in the embodiment of the invention, the ray source comprises but is not limited to α ray source, β ray source, gamma-ray source and X-ray source, the temperature change table is connected with the bottom wall of the sample box and is used for adjusting the temperature of the sample to be detected, in the embodiment, the temperature change table can be used for detecting between 77K and in practical application, the temperature change table can be a cold-hot table, the detector is used for monitoring the luminous intensity of the ray source, the detector is assembled on the assembly holes of the sample box except for the assembly holes, the assembly holes of the assembly holes, the detector, in the rest walls, in the sample box, in addition, in the assembly holes, the detector, in addition, the detector, in the assembly holes, in.
Optionally, work as set up on the sample case except that the assembly the radiation source with during all the other pilot holes outside the pilot hole of detector, except that the assembly the radiation source with assemble on all the other pilot holes outside the pilot hole of detector the radiation protection stopper, the radiation protection stopper is used for preventing radiation leakage and shading, adopts the preparation of radiation protection material, and the example can adopt heavy metal material preparation, and is concrete, can adopt the copper product preparation.
Optionally, when the sample box is provided with other assembly holes except the assembly holes for assembling the radiation source and the detector, assembling a light-transmitting window sheet on at least one other assembly hole except the assembly holes for assembling the radiation source and the detector; or the transparent window sheet is arranged on the sample box instead of at least one other wall except the wall for arranging the ray source and the wall and the bottom wall for arranging the detector; the light-transmitting window sheet is used for preventing radiation and transmitting light, and light emitted by the sample under the excitation of the rays is emitted out through the light-transmitting window sheet; work as be equipped with on the remaining wall except that the diapire of sample box except that the assembly the radiation source with during all the other pilot holes outside the pilot hole of printing opacity window piece, except that the assembly the radiation source with assemble the radiation protection stopper on all the other pilot holes except that the printing opacity window piece, the radiation protection stopper is used for preventing radiation leakage and shading, adopts the preparation of radiation protection material, and the example can adopt heavy metal material preparation, and is concrete, can adopt the preparation of copper product material.
Optionally, the device further includes an optical fiber switching component, when the sample box is provided with an assembly hole for assembling the transparent window, the optical fiber switching component replaces the transparent window to be assembled on at least one assembly hole for assembling the transparent window, and the optical fiber switching component and the detector are assembled on different assembly holes. Specifically, the optical fiber adapter assembly comprises a lens, a lens barrel and an optical fiber connector. The lens is fixed in the lens barrel through the pressing ring, the lens barrel is connected with the lens and the optical fiber connector, one end of the lens barrel, which is connected with the lens, replaces the light-transmitting window sheet to be assembled on the assembling hole for assembling the light-transmitting window sheet, and specifically, one end of the lens barrel, which is connected with the lens, replaces the light-transmitting window sheet to be assembled on the assembling hole for assembling the light-transmitting window sheet by adopting a transfer flange. The optical fiber switching assembly can be connected with an optical fiber and remotely input a sample optical signal into the optical fiber spectrometer.
Optionally, the material of the light-transmitting window may be any one of lead glass, barium fluoride (BaF2) glass, lithium fluoride (LiF2) window, calcium fluoride (CaF2) window, and magnesium fluoride (MgF2) window, which is not limited in this embodiment of the present invention.
Optionally, the apparatus further includes a lifting support, the lifting support is located at the bottom of the sample box and is configured to adjust a position of the sample box in a vertical direction, the temperature changing table is disposed between the lifting support and the sample box, and the lifting support is further configured to adjust a position of the temperature changing table in the vertical direction.
Optionally, the device further comprises a sample holder, wherein the sample holder is located in the box body of the sample box and used for placing a sample to be detected to realize optical detection.
Optionally, the apparatus further includes a heat conducting connecting seat in the sample box, the heat conducting connecting seat may be disposed in the sample box and on the temperature changing table, and extends into the sample box from the temperature changing table through a through hole on the bottom wall, and the sample holder is disposed on the heat conducting connecting seat and detachably connected to the heat conducting connecting seat; the heat conduction connecting seat is made of heat conduction materials, and can be made of copper materials.
Optionally, a quartz cover is arranged outside the sample holder, and the quartz cover is used for sealing a sample to be detected inside the quartz cover and isolating external water vapor from entering the sample to be detected.
In order to facilitate the sample rack for placing the sample to be tested to be taken out of or put into the sample box, the top of the sample box is provided with an opening, a top cover is arranged at the opening, and the top cover can seal the opening. When the top cover is provided with the assembly hole, the ray source can also stretch into the sample box from the assembly hole on the top cover to realize excitation.
In the invention, the device can be independently applied to thermoluminescent detection, is placed in a sample bin of a spectrometer and adopts a spectrum detection system to finish the thermoluminescent detection, or adopts a fiber spectrometer to finish the thermoluminescent detection.
The device for measuring the ray-induced thermoluminescence characteristic provided by the invention is easy to expand, has good universality and light and handy design, and can be used independently. Can be placed in a sample bin of a common emission monochromator to be used with a spectral detection system. The fiber can be connected for remote measurement. The radiation protection performance is good, and the test on a small-volume sample is convenient.
Example 1
As shown in fig. 1 to 2 and 5, in the present embodiment, the apparatus includes: sample box 3 adopts the radiation protection design, is equipped with four pilot holes and top cap 2, and detector 1, ray source 5, radiation protection stopper 12 and printing opacity window sheet 8 assemble respectively on the pilot hole, ray source 5 passes through sleeve 4 cover on the pilot hole, and sleeve 4 is used for avoiding radiation leakage. The transparent window 8 is made of radiation-proof material, the transparent window 8 can also be assembled on the sample box 3 in an assembling mode as shown in fig. 8, namely, at least one of the rest walls except the bottom wall of the sample box 3 is assembled on the sample box 3, and the rest wall except the bottom wall of the sample box 3 replaced by the transparent window 8 can not be the wall for assembling the radiation source 5 or the detector 1. The detector 1 is fitted on the fitting hole of the sample case 3 through the detector holder 11, and the light-transmitting window piece 8 is fitted inside the detector 1. The bottom wall of the sample box 3 is connected with a lifting bracket 6, and a temperature changing platform 7 is positioned between the bottom wall of the sample box 3 and the lifting bracket 6. Sample holder 9 is located the box of sample case 3 and is located heat conduction connecting seat 14, and heat conduction connecting seat 14 sets up on alternating temperature platform 7 and stretches into in the sample case 3 through the through-hole on the diapire of sample case 3, and the sample holder outside is covered with quartzy cover 10. The device in this embodiment can be used in the spectrometer sample compartment 22, see in particular embodiment 3.
Example 2
As shown in fig. 3 to 5, the device of the present embodiment is different from that of embodiment 1 in that an optical fiber adapter 13 is mounted on a mounting hole for mounting the louver 8 instead of the louver 8. The optical fiber adapter assembly 13 is composed of an optical fiber connector 1301, a lens barrel 1302 and a lens 1303, as shown in fig. 7, wherein the optical fiber connector 1301 is connected with an optical fiber, and one end of the lens barrel 1302, which is provided with the lens 1303, is assembled on the assembly hole through an adapter flange. The device in this example can be used independently, as shown in example 4.
Example 3
As shown in fig. 6, the spectrometer consists of a spectrometer sample chamber 22, an excitation device, a spectral detection system and an optical platform. The device is located in a spectrometer sample chamber 22, an optical component 21 is arranged between the device and the spectrum detection system, and the optical component 21 is used for carrying out convergence shaping on light rays emitted from the device. The optical component 21 may be a lens or a lens group. The apparatus was the same as that in example 1. The ray emitted by the ray source 5 irradiates on the sample rack 9, the ray source 5 is closed after a period of time, the temperature changing platform 7 is opened to change the temperature of the sample to a set temperature, and at the moment, the sample emits a thermoluminescent signal. The thermoluminescent signal of the sample directly enters the detector 1 through the quartz cover 10 or directly enters the spectrum detection system through the light-transmitting window 8 and the optical component 21, and the measurement of the thermoluminescent is completed.
Example 4
The ray emitted by the ray source 5 irradiates on the sample rack 9, the ray source 5 is closed after a period of time, the temperature changing platform 7 is opened to change the temperature of the sample to a set temperature, and at the moment, the sample emits a thermoluminescent signal. The thermoluminescent signal of the sample is respectively received by the detector 1 and the optical fiber spectrometer, and the specific receiving mode is that the thermoluminescent signal directly enters the detector 1 through the quartz cover 10 and enters the optical fiber spectrometer through the quartz cover 10 and the optical fiber connected through the optical fiber switching assembly 13.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A radiation-induced thermoluminescent property measurement apparatus, the apparatus comprising: the sample box is assembled by six walls and comprises a top wall, a bottom wall and four side walls, and at least two of the rest walls of the sample box except the bottom wall are provided with assembling holes; the radiation source is used for generating rays, is assembled on any one assembling hole and comprises an atomic source, an electron source, an ion source, an X-ray source or a gamma-ray source; the temperature changing platform is connected with the bottom wall of the sample box and is used for adjusting the temperature of the sample to be detected; the detector is used for monitoring the luminous intensity of a sample and is assembled on one or more assembly holes except the assembly hole of the ray source, when the sample box is provided with at least two or more assembly holes except the assembly hole of the ray source, the detector is assembled on any one or more assembly holes except the assembly hole of the ray source, and the inner side of the detector is provided with the light-transmitting window sheet.
2. The radiation-induced thermoluminescence-characteristic measuring device according to claim 1, wherein: when the sample box is provided with other assembly holes except the assembly holes of the ray source and the detector, the radiation protection plug is assembled on other assembly holes except the assembly holes of the ray source and the detector, and the radiation protection plug is used for preventing radiation leakage and shading.
3. The radiation-induced thermoluminescence-characteristic measuring device according to claim 1, wherein: when the sample box is provided with other assembly holes except the assembly holes for assembling the ray source and the detector, assembling the light-transmitting window sheet on at least one other assembly hole except the assembly holes for assembling the ray source and the detector; or the transparent window sheet is arranged on the sample box instead of at least one other wall except the wall for arranging the ray source and the wall and the bottom wall for arranging the detector; the light-transmitting window sheet is used for preventing radiation and transmitting light, and light emitted by the sample under the excitation of the rays is emitted out through the light-transmitting window sheet; when be equipped with on the remaining wall of sample box except that the diapire except that the assembly the radiation source with during all the other pilot holes except the pilot hole of printing opacity window sheet, except the assembly the radiation protection stopper is assembled on the radiation source with all the other pilot holes except that the printing opacity window sheet, the radiation protection stopper is used for preventing radiation leakage and shading.
4. The device for measuring thermoluminescence characteristics under induced irradiation of rays of claim 1, wherein the radiation source is α radiation source, β radiation source, gamma ray source, or X-ray source.
5. The radiation-induced thermoluminescence-characteristic measuring device according to any one of claims 1 to 4, characterized in that: the device still includes optic fibre switching subassembly, works as be equipped with the assembly hole of assembly the printing opacity window on the sample box, optic fibre switching subassembly replaces the printing opacity window assembles on at least one assembly hole of assembly the printing opacity window, just optic fibre switching subassembly with the detector assembly is on the assembly hole of difference.
6. The radiation-induced thermoluminescent property measurement apparatus as set forth in claims 1 to 5, wherein: the material of the light-transmitting window sheet is any one of lead glass, barium fluoride, lithium fluoride, calcium fluoride and magnesium fluoride.
7. The radiation-induced thermoluminescence-characteristic measuring device according to any one of claims 1 to 6, characterized in that: the device also comprises a sample frame, wherein the sample frame is positioned in the box body of the sample box and used for placing a sample to be detected and realizing optical detection.
8. The device of any one of claims 1-7, further comprising a lifting support at the bottom of the sample box for adjusting the position of the sample box in the vertical direction, wherein the temperature changing stage is disposed between the lifting support and the sample box, and wherein the lifting support is further used for adjusting the position of the temperature changing stage in the vertical direction.
9. The device of any one of claims 1 to 8, further comprising a thermally conductive connecting base in the sample box, the thermally conductive connecting base being positionable on the temperature changing stage, the sample holder being disposed on the thermally conductive connecting base and being detachably connected to the thermally conductive connecting base.
10. The device for measuring radiation-induced thermoluminescent properties according to any one of claims 1 to 9, further comprising a quartz cover disposed outside the sample holder for sealing the sample to be measured inside the quartz cover from external moisture entering the sample to be measured.
CN202010310369.8A 2020-04-20 2020-04-20 Ray-induced thermoluminescence characteristic measuring device Pending CN111323373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010310369.8A CN111323373A (en) 2020-04-20 2020-04-20 Ray-induced thermoluminescence characteristic measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010310369.8A CN111323373A (en) 2020-04-20 2020-04-20 Ray-induced thermoluminescence characteristic measuring device

Publications (1)

Publication Number Publication Date
CN111323373A true CN111323373A (en) 2020-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010310369.8A Pending CN111323373A (en) 2020-04-20 2020-04-20 Ray-induced thermoluminescence characteristic measuring device

Country Status (1)

Country Link
CN (1) CN111323373A (en)

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