CN107228788A - A kind of large scale multichannel laminar flow laser ablation pond - Google Patents
A kind of large scale multichannel laminar flow laser ablation pond Download PDFInfo
- Publication number
- CN107228788A CN107228788A CN201710340840.6A CN201710340840A CN107228788A CN 107228788 A CN107228788 A CN 107228788A CN 201710340840 A CN201710340840 A CN 201710340840A CN 107228788 A CN107228788 A CN 107228788A
- Authority
- CN
- China
- Prior art keywords
- sample
- sample room
- room cavity
- specimen holder
- laser ablation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
- G01N27/628—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas and a beam of energy, e.g. laser enhanced ionisation
Abstract
The present invention provides a kind of large scale multichannel laminar flow laser ablation pond, including sample room cavity and specimen holder, the upper and lower surface of the sample room cavity is respectively equipped with calcium fluoride windows frame and transmission light window, the left surface of the sample room cavity offers sample and places mouth, the specimen holder is placed mouth by the sample and is fixed in the middle cavity in the sample room cavity, the specimen holder has from the recessed sample accommodating chamber in its upper surface, the upper surface of the specimen holder seals with the sample room cavity and set, the right flank of the sample room cavity offers multiple aerosol outlet passageways being set up in parallel, the left surface of the sample room cavity offers multiple carrier gas inlet channels being set up in parallel, the aerosol outlet passageway and the carrier gas inlet channel extend internally to be connected with the sample accommodating chamber.Beneficial effects of the present invention：While can place a large amount of samples, moreover it is possible to overcome aerosol transmission speed slow, the memory effect defect such as significantly.
Description
Technical field
The present invention relates to laser ablationtechnique field, more particularly to a kind of large scale multichannel laminar flow laser ablation pond.
Background technology
Laser ablation inductively coupled plasma light/mass-spectrometric technique is the most successful and effectively directly solid sample is entered
One of row element or the technology of isotope analysis, the technology are obtained in fields such as geoscience, material science, life science, chemistry
To being widely applied.Laser ablationtechnique is to be degraded by laser, laser optical path, observing system, sample and high precision movement
System is constituted.Its basic functional principle is that the laser that laser is produced focuses to sample surfaces by light path, and sample surfaces are produced
Aerosol plasma mass be sent to by carrier gas analyzed.Laser ablation pond is that the place for analyzing sample placement is also
The position that laser ablation occurs.Transmission and element fractionation of the design in laser ablation pond to aerosol have important influence.
In general, laser ablation pond body product is smaller, and aerosol transmission speed is faster, and memory effect is smaller.But small size
Laser ablation pond places that sample size is limited, it is necessary to frequently vary, and can not be applied to bulk sample analysis.Tradition is substantially
The subject matter that product laser ablation pond is present is that aerosol transmission speed is slow, and memory effect significantly, and has serious position effect
Should.
It is that present laser degrades a significant challenge facing of pond design that how combined size volume, which degrades the advantage in pond,.Mesh
Before, many laser producers are proposed binary product laser ablation pond, i.e., set a small stripping again inside big laser ablation pond
Pond is lost, this design has been provided simultaneously with the advantage that size degrades pond to a certain extent, but this pond of degrading is operated and control complexity
Change, cost of manufacture greatly improves, limited by small pond of degrading, it is this degrade pond the flatness of sample surfaces is proposed it is higher
It is required that.
The content of the invention
In view of this, The embodiment provides one kind while can place a large amount of samples, moreover it is possible to overcome gas molten
Glue transmission speed is slow, the memory effect defect such as significantly, and large scale multichannel laminar flow laser ablation that is simple in construction, being easy to operation
Pond.
The embodiment provides a kind of large scale multichannel laminar flow laser ablation pond, including sample room cavity and sample
Product seat, the upper and lower surface of the sample room cavity is respectively equipped with calcium fluoride windows frame and transmission light window, the sample
The left surface of chamber body offers sample and places mouth, and the specimen holder places mouth by the sample and is fixed on the sample chamber
In internal middle cavity, the specimen holder has from the recessed sample accommodating chamber in its upper surface, the upper surface of the specimen holder and
Left end neck is sealed with the sample room cavity and set, and the right flank of the sample room cavity offers multiple gas being set up in parallel
Colloidal sol outlet passageway, the left surface of the sample room cavity offers multiple carrier gas inlet channels being set up in parallel, and the gas is molten
Glue outlet passageway and the carrier gas inlet channel extend internally to be connected with the sample accommodating chamber.
Further, one end of a carrier gas inlet suction port passes through the leading flank or trailing flank of the sample room cavity, and
With multiple carrier gas inlet channel vertical connections, all carrier gas inlet channels are blocked close to extraneous one end, with stifled prevention
Carrier gas is excessive.
Further, the quantity of the carrier gas inlet channel is 2~5, and the internal diameter of the carrier gas inlet channel is 0.05
~0.2mm.
Further, the upper surface of the specimen holder has bore seal ring recess at the top of specimen holder, is placed with fluorine glue O in it
Type sealing ring, the upper surface of the specimen holder passes through the fluorine glue O-ring seal and the top bore seal of the sample room cavity.
Further, the left end neck of the specimen holder has specimen holder neck seal ring recess, and it is O-shaped to be placed with fluorine glue in it
Sealing ring, the left end neck of the specimen holder passes through the fluorine glue O-ring seal and the left end neck seal of the sample room cavity.
Further, the sample room cavity upper surface is arranged with calcium fluoride windows frame deep gouge, the calcium fluoride windows frame
Side be surrounded by calcium fluoride windows frame seal groove, be placed with fluorine glue O-ring seal in it, the calcium fluoride windows frame
Side surrounding is sealed by the side wall of the fluorine glue O-ring seal and the calcium fluoride windows frame deep gouge.
Further, a side of the openend of the calcium fluoride windows frame deep gouge is provided with multiple semicircle deep gouges.
Further, in addition to a gas curtain collects joint, the gas curtain, which collects joint, has multiple with the aerosol to go out
The gas curtain groove of gas passage docking, the right flank of the sample room cavity is additionally provided with an Exhaust screw.
Further, the aerosol outlet passageway is 6~12, and the internal diameter of each aerosol outlet passageway is 1
~3mm.
Further, two implicit form guiding gutters are additionally provided with the sample room cavity, implicit form guiding gutter is symmetrical described in two
The opposite sides positioned at multiple carrier gas inlet channels being set up in parallel.
The beneficial effect brought of technical scheme that embodiments of the invention are provided is：(1) multiple inlet channels air inlet simultaneously
Combination with multiple outlet passageways outlet simultaneously forms hypervelocity gas laminar flow, fast and effectively that gas that laser ablation is produced is molten
Glue is sent to gas curtain and collects joint, eliminates the aerosol vortex that conventional sample chamber inner side edge is easily produced, adds transmission effect
Rate, is substantially reduced position effect, element fractionation and memory effect, it is ensured that the reliability of data analysis.(2) multiple inlet channels
The combination of outlet simultaneously of air inlet simultaneously and multiple outlet passageways, which is designed, is particularly suitable for use in manufacture large scale laser ablation pond.It is overall and
Speech, this design is combined with the advantage that big small size degrades pond：A large amount of samples can be placed, position and memory effect are small, cleverly
Solve present laser and degrade the significant challenge that pond design faces.The design of such specimen holder can place 8 diameters
25.4mm big target, the small target of 24 diameter 16mm diameters or 4 27 × 46mm thin slice are without above the fold effect and note
Recall effect, can substantially reduce and vary frequency, improve operating efficiency.
Brief description of the drawings
Fig. 1 is the overall structure diagram in large scale multichannel laminar flow laser ablation pond of the present invention；
Fig. 2 is the structural representation of the sample room cavity in Fig. 1 supper-fast multiple exit laser ablation pond；
Fig. 3 is the structural representation of the specimen holder in Fig. 1 supper-fast multiple exit laser ablation pond；
Fig. 4 is the structural representation of the calcium fluoride windows frame in Fig. 1 supper-fast multiple exit laser ablation pond；
Fig. 5 is the structural representation of the transmitted light diaphragm in Fig. 1 supper-fast multiple exit laser ablation pond；
Fig. 6 is the structural representation of the transparent sample block bracket in Fig. 1 supper-fast multiple exit laser ablation pond；
Fig. 7 is the structural representation that gas curtain in Fig. 1 supper-fast multiple exit laser ablation pond collects joint；
Fig. 8 is the structural representation of the bottom plate in Fig. 1 supper-fast multiple exit laser ablation pond.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is further described.
Fig. 1 is refer to, The embodiment provides a kind of large scale multichannel laminar flow laser ablation pond, main bag
Include：Sample room cavity 1, specimen holder 2 and calcium fluoride windows frame 3 and the fixed sample room located at the sample room cavity 1
The bottom plate 4 of cavity 1.
Refer to Fig. 1, Fig. 2 and Fig. 7, the sample room cavity 1 is hollow structure, i.e., it is internal with middle cavity, it is described in
Cavity is used to house the specimen holder.The upper and lower surface of the sample room cavity 1 is respectively equipped with the He of calcium fluoride windows frame 3
Light window is transmitted, the situation of the hollow intracavitary can be observed by the calcium fluoride windows frame 3, laser can pass through described
Light window is penetrated into the middle cavity.Shown in Fig. 1 combinations Fig. 5 and Fig. 6, the transmission light window includes the He of transmitted light diaphragm 9
Transparent sample block bracket 10, the transparent sample block bracket 10 is fixedly arranged between the bottom plate 4 and transmitted light diaphragm 9, described
Transparent sample block bracket 10 is used for the lower end that the transmitted light diaphragm 9 is fixed on to the sample room cavity 1.
The left surface of the sample room cavity 1 offers sample and places mouth 16, and the openend that the sample places mouth 16 is set
There is chamfering 15, the specimen holder 2 is placed mouth 16 by the sample and is fixed in the middle cavity in the sample room cavity 1.Institute
The right flank for stating sample room cavity 1 is offered in multiple aerosol outlet passageways 13 being set up in parallel, the present embodiment, and the gas is molten
The quantity of glue outlet passageway 13 is 6~12, preferably 10.The internal diameter of each aerosol outlet passageway 13 be 1~
3mm, preferably its internal diameter are 2mm.The right flank of the sample room cavity 1 also there is a gas curtain to collect joint 6, and the gas curtain collects
Joint 6 has multiple gas curtain grooves 24 docked with the aerosol outlet passageway 13, and carrier gas is entered back into described by gas curtain groove 24
Gas curtain collects joint 6, eventually enters into plasma mass and carries out data analysis.The aerosol outlet passageway 13 is used for will be described
Aerosol in middle cavity comes together in the gas curtain and collects joint 6, aerosol is finally collected joint 6 by the gas curtain and transmits
Walk.The right flank of the sample room cavity also has an Exhaust screw 7, when placing the specimen holder 2, unclamps the exhaust spiral shell
Silk 7, the air of the hollow intracavitary is discharged, after the specimen holder 2 is in place, and is closed Exhaust screw 7, is prevented aerosol
Flowed out from the Exhaust screw 7.
The left surface of the sample room cavity 1 offers multiple carrier gas inlet channels 12 being set up in parallel, and the carrier gas is entered
Gas passage 12 is arranged at the upper table of sample room cavity 1 downwards 1mm, and the internal diameter of the carrier gas inlet channel 12 is less than
0.5mm, specially 0.05~0.2mm, preferably its internal diameter are 0.15mm.One end of one carrier gas inlet suction port 5 passes through the sample
The leading flank or trailing flank of chamber body 1, and with all vertical connections of carrier gas inlet channel 12, the carrier gas inlet channel
12 left-hand end is blocked by epoxy resin, carrier gas is flowed out from the right-hand end of the carrier gas inlet channel 12.
Two implicit form guiding gutters are additionally provided with the sample room cavity, implicit form guiding gutter 14 is symmetrically located in many described in two
The opposite sides of the individual carrier gas inlet channel 12 being set up in parallel.Enter the middle cavity from the carrier gas inlet channel 12
Carrier gas is flowed under the guide function of implicit form guiding gutter 14 described in two, uniformly in the sample room cavity, will be located at the sample
All aerosols of in the middle of in product chamber body and both sides bring the aerosol outlet passageway 13 into.So as to effectively contain vortex
Generation, reduce memory effect, improve the accuracy of measurement.
The aerosol outlet passageway 13 and the carrier gas inlet channel 12 extend internally to be connected with the middle cavity.
Fig. 2 and Fig. 4 are refer to, the upper table of sample room cavity 1 is arranged with calcium fluoride windows frame deep gouge 17 downwards, described
The side of calcium fluoride windows frame 3 is surrounded by calcium fluoride windows frame seal groove 22, is placed with fluorine glue O-ring seal, institute in it
The side surrounding for stating calcium fluoride windows frame 3 is close by the fluorine glue O-ring seal and the side wall of the calcium fluoride windows frame deep gouge 17
Envelope.The calcium fluoride windows frame 3 is provided with calcium fluoride windows piece 21, and the thickness of the calcium fluoride windows piece 21 is 0.4~1mm,
Its light transmission rate helps to reduce the loss of laser ablation energy more than 90%.The calcium fluoride windows frame 3 is substantially rectangular
Shape.
One side of the openend of the calcium fluoride windows frame deep gouge 17 is provided with multiple semicircle deep gouges 11, preferably described
The semicircle quantity of deep gouge 11 is two, and two semicircle deep gouges 11 are mainly used in conveniently dismantling or changing the calcirm-fluoride
Diaphragm 21, so that convenient being safeguarded and being cleaned to the calcium fluoride windows frame 3.
Fig. 1 and Fig. 3 are refer to, the specimen holder 2 has from the recessed sample accommodating chamber in its upper surface, and the sample is accommodated
Chamber is used to accommodate sample.The sample accommodating chamber is in the underface of the calcium fluoride windows frame 3, through the calcium fluoride windows
Frame 3 is observed that the situation in the sample accommodating chamber.
The upper surface of the specimen holder 2 has bore seal ring recess 20 at the top of specimen holder, and the sample accommodating chamber is described
The corral of bore seal ring recess 20 at the top of specimen holder, positioned at the inner side of bore seal ring recess 20 at the top of the specimen holder.The sample
Fluorine glue O-ring seal is placed with seat top bore seal ring recess 20, the upper surface of the specimen holder 2 is O-shaped close by the fluorine glue
Seal and the top bore seal of the sample room cavity 1.
The left end neck of the specimen holder 2 has specimen holder neck seal ring recess 19, is placed with the O-shaped sealing of fluorine glue in it
Circle, the left end neck of the specimen holder 2 passes through the fluorine glue O-ring seal and the left end neck seal of the sample room cavity 1.
The left end neck of the specimen holder 2 and its upper surface use seal groove and install the design of the type sealing ring of fluorine glue 0,
Its carrier gas being passed through is not flowed to both sides and is can only flow into the gas curtain and collect joint 6, reduce the effective volume for degrading pond.Institute
The right-hand end for stating supper-fast multiple exit laser ablation pond adds Exhaust screw 7, and the Exhaust screw 7 is unclamped when varying, is changed
The air that sample process is mixed into can discharge quickly from the Exhaust screw 7, it is to avoid conventional cumbersome time-consuming exhaust flow path and be mixed into
The flame-out problem of instrument, significantly improves operating efficiency caused by air.
Fig. 1 and Fig. 3 are refer to, the supper-fast multiple exit laser ablation pond also includes pommel handle 8, the specimen holder 2
Left surface offer with the pommel handle 8 coordinate pommel handle screw hole 118.The pommel handle 8 passes through the circle
Head handle screw hole 118 is fixed on the specimen holder 2, can be easily by the specimen holder by pulling the pommel handle 8
2 take out from the sample room cavity 1.
Fig. 8 is refer to, the bottom plate 4 passes through M3 flat head screws hole and the bottom opposite position spiral shell of sample room cavity 1
Silk hole is fixed, and the bottom plate 4 is generally rectangular, on the Mobile Slide for being placed on laser ablation system.
The beneficial effect brought of technical scheme that embodiments of the invention are provided is：A kind of supper-fast multiple exit of the present invention
Laser ablation pond, the right flank of sample room cavity 1 thereon offers multiple aerosol outlet passageways 13 being set up in parallel, can be same
When transmission laser ablation pond in the middle of and corner aerosol, so as to effective containment occur by the vortex of generation it is tighter
The element fractionation of weight and memory effect, precision of analysis is improved by improving the transmission rate of aerosol.
Herein, the involved noun of locality such as forward and backward, upper and lower is to be located at parts in accompanying drawing in figure and zero
The position of part each other is intended merely to the clear of expression technology scheme and conveniently come what is defined.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of large scale multichannel laminar flow laser ablation pond, including sample room cavity and specimen holder, the sample room cavity
Upper and lower surface is respectively equipped with calcium fluoride windows frame and transmission light window, and the left surface of the sample room cavity offers sample
Product place mouth, and the specimen holder is placed mouth by the sample and is fixed in the middle cavity in the sample room cavity, its feature
It is：The specimen holder has from the recessed sample accommodating chamber in its upper surface, the upper surface of the specimen holder and left end neck with
The sample room cavity sealing is set, and the right flank of the sample room cavity offers multiple aerosol outlets being set up in parallel and led to
Road, the left surface of the sample room cavity offers multiple carrier gas inlet channels being set up in parallel, the aerosol outlet passageway
Extend internally and connected with the sample accommodating chamber with the carrier gas inlet channel.
2. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：One carrier gas inlet suction port
One end pass through the sample room cavity leading flank or trailing flank, and with multiple carrier gas inlet channel vertical connections, institute
There is carrier gas inlet channel to be blocked close to extraneous one end, prevent carrier gas excessive with stifled.
3. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：The carrier gas inlet channel
Quantity be 2~5, the internal diameter of the carrier gas inlet channel is 0.05~0.2mm.
4. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：The upper table of the specimen holder
Face has bore seal ring recess at the top of specimen holder, is placed with fluorine glue O-ring seal in it, the upper surface of the specimen holder passes through this
Fluorine glue O-ring seal and the top bore seal of the sample room cavity.
5. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：The left end of the specimen holder
Neck has specimen holder neck seal ring recess, is placed with fluorine glue O-ring seal in it, the left end neck of the specimen holder passes through this
Fluorine glue O-ring seal and the left end neck seal of the sample room cavity.
6. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：On the sample room cavity
Surface is arranged with calcium fluoride windows frame deep gouge, and the side of the calcium fluoride windows frame is surrounded by calcium fluoride windows frame sealing ring
Groove, is placed with fluorine glue O-ring seal in it, the side surrounding of the calcium fluoride windows frame passes through the fluorine glue O-ring seal and institute
State the side wall sealing of calcium fluoride windows frame deep gouge.
7. large scale multichannel laminar flow laser ablation pond as claimed in claim 6, it is characterised in that：The calcium fluoride windows frame
One side of the openend of deep gouge is provided with multiple semicircle deep gouges.
8. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：Also collect including a gas curtain
Joint, the gas curtain, which collects joint, has multiple gas curtain grooves docked with the aerosol outlet passageway, the sample room cavity
Right flank be additionally provided with an Exhaust screw.
9. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：The aerosol outlet leads to
Road is 6~12, and the internal diameter of each aerosol outlet passageway is 1~3mm.
10. large scale multichannel laminar flow laser ablation pond as claimed in claim 1, it is characterised in that：The sample room cavity
Two implicit form guiding gutters are inside additionally provided with, implicit form guiding gutter described in two is symmetrically located in multiple carrier gas air inlets being set up in parallel
The opposite sides of passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340840.6A CN107228788B (en) | 2017-05-15 | 2017-05-15 | large-size multi-channel laminar flow laser ablation pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340840.6A CN107228788B (en) | 2017-05-15 | 2017-05-15 | large-size multi-channel laminar flow laser ablation pool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107228788A true CN107228788A (en) | 2017-10-03 |
| CN107228788B CN107228788B (en) | 2019-12-06 |
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ID=59934093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710340840.6A Active CN107228788B (en) | 2017-05-15 | 2017-05-15 | large-size multi-channel laminar flow laser ablation pool |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075932A (en) * | 2014-06-19 | 2014-10-01 | 袁洪林 | Multi-target laser ablation sample chamber |
| CN203965225U (en) * | 2014-06-19 | 2014-11-26 | 袁洪林 | A kind of sample chamber of many air intake openings |
| CN104777155A (en) * | 2015-04-15 | 2015-07-15 | 武汉上谱分析科技有限责任公司 | Rotary channel type laser denudation pool |
-
2017
- 2017-05-15 CN CN201710340840.6A patent/CN107228788B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075932A (en) * | 2014-06-19 | 2014-10-01 | 袁洪林 | Multi-target laser ablation sample chamber |
| CN203965225U (en) * | 2014-06-19 | 2014-11-26 | 袁洪林 | A kind of sample chamber of many air intake openings |
| CN104777155A (en) * | 2015-04-15 | 2015-07-15 | 武汉上谱分析科技有限责任公司 | Rotary channel type laser denudation pool |
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| Publication number | Publication date |
|---|---|
| CN107228788B (en) | 2019-12-06 |
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