CN103743712B - A kind of optically stimulated luminescence dosage tester - Google Patents
A kind of optically stimulated luminescence dosage tester Download PDFInfo
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- CN103743712B CN103743712B CN201410008158.3A CN201410008158A CN103743712B CN 103743712 B CN103743712 B CN 103743712B CN 201410008158 A CN201410008158 A CN 201410008158A CN 103743712 B CN103743712 B CN 103743712B
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- optical fiber
- travel mechanism
- plastic optical
- analyzer
- upper cover
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Abstract
The present invention relates to a kind of optically stimulated luminescence dosage tester, including excitation source, photomultiplier tube, beam splitter, analyzer upper cover, specimen disc, analyzer body, plastic optical fiber and optical fiber travel mechanism, optical fiber travel mechanism is fixed on analyzer and covers. Optical fiber travel mechanism is magnetic flux travel mechanism, worm and gear travel mechanism. Plastic optical fiber is made up of single fiber cores, optical fiber coating and fiber outer layer, and fiber core diameter is 8��15mm. Optical fiber travel mechanism is connected with plastic optical fiber one end, and the plastic optical fiber other end is divided into two-way by beam splitter, is connected respectively to excitation source and photomultiplier tube. Optically stimulated luminescence dosage tester optical fiber travel mechanism front end is provided with dismountable sleeve pipe and condenser lens. The present invention uses the plastic optical fiber of major diameter, increases coupling efficiency, improves light source activation intensity; Optical fiber travel mechanism realizes the accurate control to fiber position, reduces the excitation source impact for contiguous print, can common sample and single crystal grain sample be measured.
Description
Technical field
The invention belongs to technical field of measuring equipment in geological epoch, relate to a kind of optically stimulated luminescence dosage tester, be specifically related to a kind of optically stimulated luminescence dosage tester with optical fiber travel mechanism.
Background technology
The defect produced in solid mineral crystal generation process and acquired environment bring the lattice defect that its radiation all can cause its crystals, form free energy storage electronics, and it is stored in the stimulation once external energy of the energy storage electronics in crystal, photon will be launched. Luminous energy is adopted to excite the method for mineral crystal to be called that light releases light. Light releases just a kind of phosphorescence, and for same mineral crystal, at fixing light source with under identical shooting condition, light Light releasing photon total amount is directly proportional to the total amount of energy storage electronics in solid, and the radiation dose namely received to crystal is directly proportional. This is that light is released light technology and is applied to the theoretical foundation of crystal dosimetry and dating.
In the practice of crystal dosage and dating, the light quantity of totally releasing of multiple crystal grain is generally adopted to carry out dosimetry, owing to the constituent of multiple crystal grain is not quite similar, therefore, the light quantity of comprehensively releasing adopting multiple crystal grain carries out dosimetry, and unavoidable exist uncertain error. It is adopt the light of the simple grain mineral grains being relatively large in diameter to release light quantity to carry out dosimetry that light releases the developing direction of light measurement, and one of effect of the present invention provides mensuration system for this single crystal grain sample being relatively large in diameter exactly.
Some papers delivered at present and patent documentation are referred to the transmission adopting optical fiber to carry out exciting light, but its interface loss is very big, and affect problem all without what consider emphatically to close on print. The optical fiber of prior art is the fibre bundle of multiple optical fiber composition, and not only the gap between multiple optical fiber can not lead to light, and the existence of optical fiber coating, cause that effective clear field reduces. Common light is released optical tests and is adopted print hoisting mechanism to be lifted up by sample, excitation source direct irradiation sample surfaces, and not only light source emission effciency is low for such mode of excitation, reveals light and also the mensuration closing on print is impacted.
Summary of the invention
It is an object of the invention to provide a kind of optically stimulated luminescence dosage tester, to optimize the function that optical fiber transmits, reduction sample excitation and light release the distance of optical detection, improve exciting and detection efficient of optically stimulated luminescence dosage tester device, improve light and release the sealing of optical tests, reduce the impact of adjacent print, and the single crystal grain sample for being relatively large in diameter provides mensuration system.
Optically stimulated luminescence dosage tester of the present invention, including excitation source, photomultiplier tube, beam splitter, analyzer upper cover, specimen disc and analyzer body. Optically stimulated luminescence dosage tester is additionally provided with plastic optical fiber and optical fiber travel mechanism, and optical fiber travel mechanism is fixed on analyzer and covers. Optical fiber travel mechanism is magnetic flux travel mechanism or worm and gear travel mechanism. Plastic optical fiber is made up of single fiber cores, optical fiber coating and fiber outer layer, and the diameter of fiber cores is 8��15mm. Optical fiber travel mechanism is connected with one end of plastic optical fiber, and the other end of plastic optical fiber is divided into two-way by beam splitter, and a road is connected to excitation source, and another road is connected to photomultiplier tube.
Magnetic flux travel mechanism includes magnetic flux material, optical fiber dop, locating piece and spring, and magnetic flux material, optical fiber dop are provided with the opening identical with plastic optical fiber external diameter with locating piece. Optical fiber dop is bolted on the top of analyzer upper cover, and magnetic flux material is bolted on the bottom of analyzer upper cover. Plastic optical fiber sticks with glue through optical fiber dop and is connected on locating piece, and one end of spring is fixed on locating piece, and the other end is fixed on optical fiber dop. Worm and gear travel mechanism includes drive apparatus and motor module, and drive apparatus is made up of worm gear, worm screw and rack frame, and motor module is provided with motor. Motor module is fixed on analyzer upper cover, and rack frame is fixed on analyzer upper cover. Drive apparatus, through motor module and analyzer upper cover, is arranged on analyzer upper cover by rack frame. Worm gear is coaxially connected with motor, and worm gear and worm screw engage each other. Plastic optical fiber glue and worm screw bond together.
The front end of optical fiber travel mechanism sets sleeve pipe and condenser lens, and casing inner diameter is more than fibre external diameters, and sleeve pipe is connected with optical fiber travel mechanism by screw thread, and condenser lens sticks with glue to connect and is fixed in sleeve pipe. Sleeve pipe and interior lens are prone to handling, are respectively used to common print and the mensuration of single crystal grain print. Optical fiber travel mechanism is divided into duty and rotation status, and during rotation status, plastic optical fiber separates with the sample cell of specimen disc, and specimen disc can rotate freely. During duty, plastic optical fiber falls into sample cell, close to print. Excitation source is high-energy LED module or LASER Light Source, and optically stimulated luminescence dosage tester uses other light source to be also the scope of protection of the invention. Specimen disc is provided with 5��60 sample cells, and sample cell is concave structure, and the degree of depth of sample cell is 1.5��5mm.
Compared with prior art, the invention has the beneficial effects as follows: (1). the plastic optical fiber of the major diameter of use, increase coupling efficiency, improve light source activation intensity, overcome prior art fibre bundle clear field little, inefficient problem. The plastic optical fiber of major diameter can simultaneously complete the transmitted in both directions of excitation source and detectable signal. (2). adopt magnetic flux type or Worm-gear type optical fiber travel mechanism, decrease excitation source in excitation process and, for the impact of contiguous print, simplify the sample lifting means that analyzer is loaded down with trivial details. (3). magnetic flux type or Worm-gear type optical fiber travel mechanism are capable of the accurate control to fiber position, increase the efficiency of arousal function and detection. Plastic optical fiber close to print, excitation source and photomultiplier tube, can improve the efficiency exciting and detecting simultaneously. (4). by increasing sleeve pipe and condenser lens in the front end of plastic optical fiber, exciting light converges on single crystal grain by plastic optical fiber transmission and condenser lens, the light of single crystal grain is released light and is gone out by fiber-optic transfer, it is achieved the mensuration to single crystal grain sample, improves the serviceability of analyzer.(5). use the specimen disc of the spill sample cell of the degree of depth, it is to avoid in excitation process, excitation source is for the impact of contiguous print. (6). sleeve pipe and focus lens assembly and optical fiber travel mechanism are threaded connection, it is easy to handling, and the optically stimulated luminescence dosage being adapted to common print and individual particle print measures, compatible good.
Accompanying drawing explanation
Fig. 1 is the structural representation of optically stimulated luminescence dosage tester of the present invention;
Fig. 2 is the structural representation of another program of the present invention;
Fig. 3 is the schematic cross-section of plastic optical fiber;
Fig. 4 is the schematic diagram of magnetic flux travel mechanism;
Fig. 5 is the structural representation of worm and gear travel mechanism;
Fig. 6 is the side view of Fig. 5;
Fig. 7 is the top view of Fig. 5;
Fig. 8 is the magnetic flux travel mechanism schematic diagram measuring single crystal grain sample;
Fig. 9 is the worm and gear travel mechanism schematic diagram measuring single crystal grain sample;
Figure 10 is the location drawing of plastic optical fiber under optically stimulated luminescence dosage tester device rotation status;
Figure 11 is the location drawing of plastic optical fiber under optically stimulated luminescence dosage tester device duty;
Figure 12 is the schematic cross-section of ordinary optic fibre bundle;
Figure 13 is the schematic diagram of single crystal grain print;
Figure 14 is the structural representation of worm screw.
Wherein:
1 excitation source, 2 photomultiplier tubes, 3 beam splitters, 4 prints, 5 specimen discs, 6 plastic optical fibers, 7 analyzer upper covers, 8 sample cells, 9 magnetic flux materials, 10 optical fiber dops, 11 locating pieces, 12 optical fiber coatings, 13 fiber cores, 14 drive apparatus, 15 fiber outer layers, 16 motor modules, 17 springs, 18 glue, 19 bolts, 20 magnetic flux wires, 21 analyzer bodies, 22 worm gears, 23 worm screws, 24 motors, 25 rack frames, 26 condenser lenses, 27 sleeve pipes, 28 single crystal grain, 29 worm screw upper covers, 30 worm screw bases, 31 screw threads.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
Optically stimulated luminescence dosage tester of the present invention is as shown in Figure 1, including excitation source 1, photomultiplier tube 2, beam splitter 3, plastic optical fiber 6, analyzer upper cover 7, specimen disc 5, analyzer body 21 and optical fiber travel mechanism, optical fiber travel mechanism is fixed on analyzer and covers. Optical fiber travel mechanism is connected with one end of plastic optical fiber, and the other end of plastic optical fiber is divided into two-way by beam splitter, and a road is connected to excitation source, and another road is connected to photomultiplier tube. As it is shown on figure 3, plastic optical fiber 6 is made up of single fiber cores 13, optical fiber coating 12 and fiber outer layer 15, the diameter of fiber cores is 10mm. As seen from Figure 12, the gap between the ordinary optic fibre bundle optical fiber being made up of multiple optical fiber can not lead to light, and due to the existence of optical fiber coating, causes that its effective clear field reduces, and adopts the plastic optical fiber 6 of single major diameter to overcome drawbacks described above. Therefore, adopting the fibre bundle that single major diameter plastic optical fiber forms compared to ordinary optic fibre, coupling efficiency significantly improves. Specimen disc 5 is provided with 10 sample cells 8, and sample cell is in specimen disc circle distribution, and sample cell is concave structure, and the degree of depth of sample cell is 2mm. Excitation source 1 is high-energy LED module.
As shown in Figure 4, optical fiber travel mechanism is magnetic flux travel mechanism, and including magnetic flux material 9, optical fiber dop 10, locating piece 11 and spring 17, magnetic flux material, optical fiber dop are provided with the opening identical with plastic optical fiber external diameter with locating piece. Optical fiber dop is fixed on the top of analyzer upper cover 7 by bolt 19, and magnetic flux material is bolted on the bottom of analyzer upper cover.Plastic optical fiber 6 is bonded on locating piece through optical fiber dop glue 18, and one end of spring is fixed on locating piece, and the other end is fixed on optical fiber dop. Magnetic flux material is connected with controlling system by magnetic flux wire 20, controls system and is connected with power supply.
Magnetic flux travel mechanism divides duty and rotation status (i.e. "on" position and off-position), and under two states, plastic optical fiber is different relative to the position of print. Under off-position, magnetic flux material no power, plastic optical fiber is in upper, and specimen disc can rotate freely. Under "on" position, magnetic flux material 9 has magnetic, is inhaled by locating piece 11, and plastic optical fiber drops to bottom with locating piece 11, and plastic optical fiber is close with the distance of sample, carries out optically stimulated luminescence dosage test. Reduce the distance of optical fiber and print to be conducive to improving excitation source and excite and light releases the efficiency of optical detection, carry out optically stimulated luminescence dosage test owing to optical fiber drops in the sample cell of concave structure, it is possible to reduce the impact on adjacent print, improve the accuracy of mensuration.
Embodiment 2
Another embodiment of the present invention is as indicated with 2, including excitation source 1, photomultiplier tube 2, beam splitter 3, plastic optical fiber 6 and analyzer body 21, analyzer body is provided with analyzer upper cover 7, specimen disc 5 and worm and gear travel mechanism, and worm and gear travel mechanism includes drive apparatus 14 and motor module 16. One end of plastic optical fiber is connected to worm and gear travel mechanism, and the other end is divided into two-way by beam splitter, and a road is connected to excitation source, and another road is connected to photomultiplier tube.
As shown in Fig. 5��7, drive apparatus is made up of worm gear 22, worm screw 23 and rack frame 25, and motor module is provided with motor 24. Motor module is fixed on analyzer upper cover 7, and rack frame 25 is fixed on analyzer upper cover. Drive apparatus, through motor module and analyzer upper cover, is arranged on analyzer upper cover by rack frame. Worm gear is coaxially connected with motor, and worm gear and worm screw engage each other. Plastic optical fiber 6 bonds together with glue 18 and worm screw. The diameter of fiber cores is 12mm, and specimen disc 5 is provided with 14 sample cells 8, and sample cell is in specimen disc circle distribution, and sample cell is concave structure, and the degree of depth of sample cell is 3mm. Excitation source 1 is LASER Light Source.
As shown in figure 14, worm screw includes worm screw upper cover 29, worm screw base 30, plastic optical fiber 6 and plug. Worm screw superstructure is internal semicircle, external square. The installation method of optical fiber worm screw transfer structure is: be first bonded at by plastic optical fiber on worm screw base, then worm and wheel engagement is inserted, adjusts the correct position of fiber-optic probe end. Need by plastic optical fiber and print close to time, button press, automatically proceed to reach detecting location.
Worm and gear travel mechanism divides duty and rotation status, and as shown in Figure 10, during rotation status, plastic optical fiber separates with the sample cell of specimen disc, and specimen disc can rotate freely. As shown in figure 11, during duty, plastic optical fiber drops to sample cell 8, close to print 4. For improving detection efficient, it is desirable to the detection area of detecting devices is as far as possible big, also requires that photomultiplier tube is as close as print.
Embodiment 3
As shown in Figure 8, analyzer is provided with sleeve pipe 27 and condenser lens 26 to another embodiment of the present invention. Optical fiber travel mechanism is magnetic flux travel mechanism, and including magnetic flux material 9, optical fiber dop 10, locating piece 11 and spring 17, magnetic flux material, optical fiber dop are provided with the opening identical with plastic optical fiber external diameter with locating piece.Optical fiber dop is fixed on the top of analyzer upper cover 7 by bolt 19, and magnetic flux material is bolted on the bottom of analyzer upper cover. Plastic optical fiber 6 is bonded on locating piece through optical fiber dop glue 18, and one end of spring is fixed on locating piece, on the fixing optical fiber dop of the other end. Sleeve pipe 27 is connected to the opening part of magnetic flux material by screw thread 31, is positioned at the front end of plastic optical fiber, and condenser lens 26 sticks with glue to connect and is fixed in sleeve pipe. As shown in figure 13, when carrying out single crystal grain sample determination, single crystal grain 28 is sticked with glue the center connecing print 4. Exciting light converges on single crystal grain by plastic optical fiber transmission and condenser lens, and single crystal grain light is released light and gone out by fiber-optic transfer.
Embodiment 4
The 4th kind of embodiment of the present invention is as it is shown in figure 9, analyzer is provided with sleeve pipe 27 and condenser lens 26. Optical fiber travel mechanism is worm and gear travel mechanism, and worm and gear travel mechanism is provided with drive apparatus 14 and motor module 16. Motor module is fixed on analyzer upper cover, and drive apparatus is fixed on analyzer and covers, and passes motor module and analyzer upper cover. Motor module is provided with micro-step motor, and drive apparatus is made up of worm gear 22 and worm screw 33. Worm gear is coaxially connected with motor, and worm gear and worm screw engage each other. Bonding together with glue 18 and worm screw of plastic optical fiber, sleeve pipe 27 is fixed together by external screw thread and worm screw, and condenser lens 26 sticks with glue to connect and is fixed in sleeve pipe.
Claims (5)
1. an optically stimulated luminescence dosage tester, including excitation source (1), photomultiplier tube (2), beam splitter (3), analyzer upper cover (7), specimen disc (5) and analyzer body (21), it is characterized in that: described analyzer is provided with plastic optical fiber (6) and optical fiber travel mechanism, and described optical fiber travel mechanism is fixed on analyzer and covers; Described optical fiber travel mechanism is magnetic flux travel mechanism or worm and gear travel mechanism; Described plastic optical fiber (6) is made up of single fiber cores (13), optical fiber coating (12) and fiber outer layer (15), and the diameter of described fiber cores is 8��15mm; Described optical fiber travel mechanism is connected with one end of plastic optical fiber, and the other end of plastic optical fiber is divided into two-way by beam splitter, and a road is connected to excitation source, and another road is connected to photomultiplier tube; Described magnetic flux travel mechanism includes magnetic flux material (9), optical fiber dop (10), locating piece (11) and spring (17), and described magnetic flux material, optical fiber dop are provided with the opening identical with plastic optical fiber external diameter with locating piece; Described optical fiber dop is fixed on the top of analyzer upper cover (7) by bolt (19), and magnetic flux material is bolted on the bottom of analyzer upper cover; Described plastic optical fiber (6) is bonded on locating piece through optical fiber dop glue (18), and one end of described spring is fixed on locating piece, and the other end is fixed on optical fiber dop.
2. optically stimulated luminescence dosage tester according to claim 1, it is characterized in that: described worm and gear travel mechanism includes drive apparatus (14) and motor module (16), described drive apparatus is made up of worm gear (22), worm screw (23) and rack frame (25), and described motor module is provided with motor (24); Described motor module is fixed on analyzer upper cover (7), and rack frame (25) is fixed on analyzer upper cover (7); Described drive apparatus, through motor module and analyzer upper cover, is arranged on analyzer upper cover by rack frame; Described worm gear is coaxially connected with motor, and worm gear and worm screw engage each other; Described plastic optical fiber glue (18) and worm screw bond together.
3. optically stimulated luminescence dosage tester according to claim 1 and 2, it is characterized in that: the front end of described optical fiber travel mechanism is provided with sleeve pipe (27) and condenser lens (26), described sleeve pipe is connected with optical fiber travel mechanism by screw thread (31), and described condenser lens glue (18) is adhesively fixed in sleeve pipe.
4. optically stimulated luminescence dosage tester according to claim 1, is characterized in that: described optical fiber travel mechanism is divided into duty and rotation status, and during rotation status, plastic optical fiber separates with the sample cell (8) of specimen disc, and specimen disc can rotate freely; During duty, plastic optical fiber drops to sample cell, close to print (4).
5. optically stimulated luminescence dosage tester according to claim 1, is characterized in that: described specimen disc (5) is provided with 5��60 sample cells (8), and described sample cell is concave structure, and the degree of depth of sample cell is 1.5��5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008158.3A CN103743712B (en) | 2014-01-08 | 2014-01-08 | A kind of optically stimulated luminescence dosage tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008158.3A CN103743712B (en) | 2014-01-08 | 2014-01-08 | A kind of optically stimulated luminescence dosage tester |
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| CN103743712A CN103743712A (en) | 2014-04-23 |
| CN103743712B true CN103743712B (en) | 2016-06-08 |
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| CN201410008158.3A Expired - Fee Related CN103743712B (en) | 2014-01-08 | 2014-01-08 | A kind of optically stimulated luminescence dosage tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104655593A (en) * | 2015-01-21 | 2015-05-27 | 中国科学院广州地球化学研究所 | Pulse-excitation-based optically stimulated luminescence measurement and control device |
| CN105548095B (en) * | 2016-01-21 | 2023-08-22 | 石家庄经济学院 | Open-air geological sample age tester of using |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581667A (en) * | 2008-05-14 | 2009-11-18 | 中国科学院半导体研究所 | Optical excitation fluorescent spectra system having no requirement of stability of excitation light source |
| CN101813625A (en) * | 2010-04-09 | 2010-08-25 | 厦门出入境检验检疫局检验检疫技术中心 | for identifying irradiated foods |
| CN102207461A (en) * | 2011-03-18 | 2011-10-05 | 石家庄经济学院 | Portable mineral age determinator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004530125A (en) * | 2001-04-02 | 2004-09-30 | ツェプトゼンス アクチエンゲゼルシャフト | Optical structures and their use for multiphoton excitation |
| US7218810B2 (en) * | 2001-09-27 | 2007-05-15 | Bio-Rad Laboratories, Inc. | Biochemical assay detection in a liquid receptacle using a fiber optic exciter |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581667A (en) * | 2008-05-14 | 2009-11-18 | 中国科学院半导体研究所 | Optical excitation fluorescent spectra system having no requirement of stability of excitation light source |
| CN101813625A (en) * | 2010-04-09 | 2010-08-25 | 厦门出入境检验检疫局检验检疫技术中心 | for identifying irradiated foods |
| CN102207461A (en) * | 2011-03-18 | 2011-10-05 | 石家庄经济学院 | Portable mineral age determinator |
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