CN102522308A - Ion mobility spectrometer and ion collection device thereof - Google Patents
Ion mobility spectrometer and ion collection device thereof Download PDFInfo
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- CN102522308A CN102522308A CN2011104388968A CN201110438896A CN102522308A CN 102522308 A CN102522308 A CN 102522308A CN 2011104388968 A CN2011104388968 A CN 2011104388968A CN 201110438896 A CN201110438896 A CN 201110438896A CN 102522308 A CN102522308 A CN 102522308A
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Abstract
The invention provides an ion mobility spectrometer and an ion collection device thereof. The ion collection device comprises a restraining grid mesh, a first electrode and an iron collector, wherein the restraining grid mesh is used for restraining influences of ionic migration in a migration area on ion collection, the first electrode is arranged on the lower side of the restraining grid mesh in the ionic migration direction and mechanically and electrically connected with the restraining grid mesh, and the ion collector is used for collecting ions and comprises an ion collection portion. A space is formed in the first electrode, and the ion collection portion of the ion collector is arranged in the space formed in the first electrode. The restraining grid mesh and the first electrode are equipotential and form a focusing electric field with the ion collection portion, so that ions entering the collection area cannot be scattered on a shield, and collection efficiency is improved.
Description
The application is for application number is 200910088634.6, the applying date is on June 30th, 2009, denomination of invention is divided an application for the patent application of " the ion collection device and the ionic migration spectrometer of ionic migration spectrometer ".
Technical field
The present invention relates to a kind of ionic migration spectrometer, more particularly the present invention relates to a kind of ion collection device of ionic migration spectrometer.
Background technology
Referring to Fig. 1 and 2; Ionic migration spectrometer comprise ion collection device 50 '; This ion collection device 50 ' comprise be used to suppress migration area ion travel motion to the inhibition aperture plate 15 of ion collection influence '; The faraday who is used for collection of ions coils 17 ', be used for fixing faraday to coil 17 ' insulating part 2, and the radome 21 that links to each other with insulating part 2 '.In addition, this ionic migration spectrometer also comprises and is used to amplify the amplifying circuit that coils the analog signal of 17 ' output from faraday, amplifying circuit through lead 6 and faraday coil 17 ' be connected, this amplifying circuit is with comprising analog signal.This ionic migration spectrometer comprises that also being used to the migration electrode provides the migration electrode supply of power supply, and this migration electrode supply has the lead-out terminal of ground connection, and the lead-out terminal of this ground connection forms the ground connection of moving electrode.Radome 21 ' screen 5 through coaxial cable is connected with the analog signal of amplifying circuit ground and through electric wire 7 and be that the ground that moves electrode power supply is connected.The ion of migration area is through suppressing aperture plate 15 ' coiled 17 by faraday ' collect, and faraday coils 17 ' coaxial cable output through constituting by heart yearn 5 and screen 6.
For said structure, ion gets into collecting region, suppress aperture plate 15 ' with the electric field action of radome 21 ' formation under, ion flies to radome 21 ' and lose, thereby influences collection rate.
In the example depicted in fig. 1, taked the plane suppress aperture plate 15 ', and be arranged on suppress aperture plate 15 ', the faraday in the downstream of ion migratory direction coils 17 '.The shortcoming of this structure is, ion can scatter to radome 21 ' on, can have influence on collection rate thus.
In the example as shown in Figure 2, suppress aperture plate 15 ' be spherical, suppress aperture plate 17 ' can focus on thus ion, but net shape inhibition aperture plate 15 ' processing cost higher.
In addition, in the above-mentioned prior art, exist for the migration electrode power supply high pressure ground and analog signal in the problem of radome 21 ' altogether, the noise on high pressure ground can be directly coupled to amplifying circuit, promptly on the front-end circuit, has influenced the ionic migration spectrometer performance.
Summary of the invention
In order to alleviate the problem that exists in the above-mentioned prior art at least in part; The ion collection device that the purpose of this invention is to provide a kind of ionic migration spectrometer; And ionic migration spectrometer, this ion collection device and ionic migration spectrometer can improve ion collection efficient with simple structure.
According to an aspect of the present invention, the invention provides a kind of ion collection device of ionic migration spectrometer.The ion collection device comprises: be used to suppress the inhibition aperture plate of migration area ion travel motion to the ion collection influence; And being arranged on first electrode that suppresses downstream aperture plate, the ion migratory direction, this first electrode is with inhibition aperture plate mechanical connection and be electrically connected.
According to a further aspect in the invention; This ion collection device can also comprise: the ion collection spare that is used for collection of ions; This ion collection spare comprises the ion collection part; Wherein this first electrode within it portion form the space, the ion collection of said ion collection spare partly is arranged in the space that the inside of this first electrode forms.
According to a further aspect in the invention; The ion collection device of described ionic migration spectrometer also comprises: be arranged on second electrode in downstream said first electrode, the ion migratory direction, this second electrode is configured for making ion in ionic migration spectrometer, to carry out the grounding electrode in the migration electrode of travel motion.
According to a further aspect in the invention, the ion collection device also comprises: be arranged on first insulating part this first electrode and between second, this ion collection spare is connected in said first insulating part.
According to a further aspect in the invention, the ion collection device also comprises: be arranged on the radome in downstream said second electrode, the ion migratory direction, this radome and said second electrode gap are opened.
According to a further aspect in the invention, wherein said suppressor netting gear has flat substantially shape.
According to a further aspect in the invention, wherein said first electrode has the shape of ring-type substantially.
According to a further aspect in the invention, wherein said second electrode has the shape of ring-type substantially.
According to a further aspect in the invention, the ion collection device also comprises: be arranged on second insulating part in downstream of the ion migratory direction of said second electrode, this radome and said second electrode are spaced apart through said second insulating part.
According to a further aspect in the invention; Wherein said ion collection spare also comprises the segment signal output that partly is connected with this ion collection; And wherein said radome is suitable for being connected with first conductive layer in the heart yearn of the coaxial cable outside; The heart yearn of this coaxial cable is connected with the segment signal output of this ion collection spare, is used for from segment signal output output signal.
According to a further aspect in the invention, wherein said first electrode and second electrode coaxial setting substantially.
According to a further aspect in the invention, wherein said first insulating part has the shape of general plate or the shape of plate-like.
According to a further aspect in the invention, wherein said first insulating part has central through hole at core, and the segment signal output of ion collection spare stretches out through this central through hole, and said first insulating part also comprises a plurality of through holes around said centre bore.
In accordance with a further aspect of the present invention, the invention provides a kind of ionic migration spectrometer, this ionic migration spectrometer comprises: the ion collection district part that is used for collection of ions; And the ion collection device that is arranged on said ion collection district part, wherein this ion collection device comprises: be used for the ion collection spare of collection of ions, this ion collection spare comprises the ion collection part; Be used to suppress the inhibition aperture plate of migration area ion travel motion to the ion collection influence; Be arranged on first electrode that suppresses downstream aperture plate, the ion migratory direction; This first electrode with suppress the aperture plate mechanical connection and be electrically connected; Wherein this first electrode within it portion form the space, the ion collection of said ion collection spare partly is arranged in the space that the inside of this first electrode forms; And first insulating part that is arranged on downstream this first electrode, the ion migratory direction, this ion collection spare is connected in said first insulating part.
According to a further aspect in the invention; Ionic migration spectrometer also comprises: be arranged on second electrode in downstream said first insulating part, the ion migratory direction, this second electrode is configured for making ion in ionic migration spectrometer, to carry out the grounding electrode in the migration electrode of travel motion.
According to a further aspect in the invention, ionic migration spectrometer also comprises: be arranged on the radome in downstream said second electrode, the ion migratory direction, this radome and said second electrode gap are opened.
According to a further aspect in the invention, wherein said suppressor netting gear has flat substantially shape.
According to a further aspect in the invention, wherein said first electrode has the shape of ring-type substantially.
According to a further aspect in the invention, wherein said ion collection spare also comprises the segment signal output that partly is connected with this ion collection.
According to a further aspect in the invention, wherein said radome is connected with first conductive layer in the heart yearn outside of coaxial cable, and the heart yearn of this coaxial cable is connected with the segment signal output of this ion collection spare, is used for from segment signal output output signal.
According to a further aspect in the invention; Ionic migration spectrometer also comprises: amplifying circuit; The input of this amplifying circuit receives from the signal of said segment signal output output through the heart yearn of said coaxial cable, and said radome is connected with the simulation ground of amplifying circuit through first conductive layer of said coaxial cable.
According to a further aspect in the invention, wherein: said second electrode is connected to the simulation ground of amplifying circuit at the output end of said amplifying circuit.
According to a further aspect in the invention, ionic migration spectrometer also comprises: the amplifying circuit screening can that is used to shield amplifying circuit; And the external conductive casing of ion collection district part, wherein said coaxial cable comprises second conductive layer that is arranged on first conductive layer outside, this second conductive layer connects the external conductive casing of amplifying circuit screening can and ion collection district part.
According to a further aspect in the invention; Ionic migration spectrometer also comprises: be used to the migration electrode supply that the migration electrode provides power supply; The migration electrode supply has migration electrode supply screening can; Said migration electrode supply has the lead-out terminal of ground connection, and this ground connection lead-out terminal is connected with second electrode, and is connected to the simulation ground of said amplifying circuit at the output end of amplifying circuit.
Through execution modes more of the present invention, can improve the collection of ion effectively, and make things convenient for drawing of signal, improve signal to noise ratio.
Description of drawings
Fig. 1 is the ion collection schematic representation of apparatus of the ionic migration spectrometer of prior art.
The ion collection schematic representation of apparatus of the ionic migration spectrometer of another prior art of Fig. 2.
Fig. 3 is the ion collection schematic representation of apparatus according to the ionic migration spectrometer of the embodiment of the invention;
Fig. 4 is the schematic section according to the inhibition aperture plate of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Fig. 5 is the schematic front view according to the inhibition aperture plate of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Fig. 6 is the schematic sectional view according to first electrode of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Fig. 7 is the schematic front view according to first electrode of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Fig. 8 is the schematic front view according to the ion collection spare of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Fig. 9 is the schematic sectional view according to the ion collection spare of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 10 is the schematic sectional view according to first insulating part of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 11 is the schematic front view according to first insulating part of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 12 is the schematic sectional view according to second electrode piece of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 13 is the schematic front view according to second electrode piece of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 14 is the schematic sectional view according to second insulating part of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 15 is the schematic front view according to second insulating part of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 16 is the schematic section according to the radome of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Figure 17 is the schematic front view according to the radome of the ion collection device of the ionic migration spectrometer of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
As shown in Figure 3, in some embodiments of the invention, ionic migration spectrometer comprises according to an embodiment of the invention: the ion collection district part 90 that is used for collection of ions; And the ion collection device 50 that is arranged on said ion collection district part 90.
As shown in Figure 3, ionic migration spectrometer 10 can also comprise according to an embodiment of the invention: amplification circuits 60, and be used to the migration electrode supply 70 that the migration electrode provides power supply.
As shown in Figure 3, the ion collection device 50 of ionic migration spectrometer comprises according to an embodiment of the invention: be used to suppress the inhibition aperture plate 15 of migration area ion travel motion to the ion collection influence; And being arranged on first electrode 16 that suppresses aperture plate or downstream suppressor 15, ion migratory direction 80 (that is, the right side among Fig. 3), this first electrode 16 is with inhibition aperture plate 15 mechanical connections and be electrically connected.
In some embodiments of the invention; Like Fig. 3,6,7,8, shown in 9; The ion collection device 50 of ionic migration spectrometer also comprises the ion collection spare 17 that is used for collection of ions according to an embodiment of the invention, and this ion collection spare 17 comprises ion collection part 171.This first electrode 16 portion within it forms space 161, and the ion collection part 171 of said ion collection spare 17 is arranged in the space 161 that the inside of this first electrode 16 forms.
In other embodiment of the present invention; The ion collection part 171 of said ion collection spare 17 is not arranged in the space 161 that the inside of this first electrode 16 forms; And outside the space 161 that the inside that is arranged on first electrode 16 forms; For example adjacent with first electrode 16, or the distance certain at interval with first electrode 16.
In some embodiments of the invention, like Fig. 3,6,7,8, shown in 9, the ion collection device 50 of ionic migration spectrometer also comprises according to an embodiment of the invention; Be arranged on first insulating part 18 in downstream this first electrode 16, ion migratory direction 80, this ion collection spare 17 is connected in said first insulating part 18.
In other embodiment of the present invention, the ion collection spare 17 of the ion collection device 50 of ionic migration spectrometer can be fixed on other parts of collecting region of ionic migration spectrometer or on the insulating part.As selection, the ion collection spare 17 of ion collection device 50 can be fixed on ionic migration spectrometer, well known in the art, any suitable components.Ion collection spare 17 can be the ion collection spare of any suitable shape.
According to some embodiments of the present invention; As shown in Figure 3; The ion collection device 50 of described ionic migration spectrometer can also comprise: be arranged on second electrode 19 in downstream said first insulating part 18, ion migratory direction 80, this second electrode 19 is configured for making ion in ionic migration spectrometer, to carry out the grounding electrode in the migration electrode of travel motion.That is, second electrode 19 is connected with the ground of follow-up high-tension circuit as high pressure ground HGND.
According to some embodiments of the present invention; As shown in Figure 3; The ion collection device 50 of described ionic migration spectrometer can also comprise: be arranged on the radome 21 in downstream said second electrode 19, the ion migratory direction, this radome 21 is spaced apart with said second electrode 19.A kind of example of radome 21 is shown in Figure 16-17.
In some embodiments of the invention, as shown in Figure 3, described radome 21 is connected with the simulation ground of follow-up circuit as analog signal ground AGND, high pressure ground with simulate the simulation of amplifier rear end side single-point link to each other.
According to some embodiments of the present invention, the ion collection device 50 of described ionic migration spectrometer can not comprise second electrode 19.In this case, for example, ion collection device 50 can directly connect radome 21 on first insulating part 18.
According to some embodiments of the present invention, like Fig. 4, shown in 5, said inhibition aperture plate 15 can have flat substantially shape, perhaps flat shape.In addition, in one embodiment, like Fig. 4, shown in 5, said inhibition aperture plate 15 can be electrically connected by the ring-shaped article 151 of conduction with the ring-shaped article 151 of conduction and the net 152 of the conduction of mechanical connection constitutes.As selection, said inhibition aperture plate 15 can only be made up of conductive mesh.
According to some embodiments of the present invention, shown in Fig. 6 and 7, said first electrode 16 can have the shape of ring-type substantially.In addition, first electrode 16 of ring-type can have the inner surface of taper surface substantially, the inner surface on the face of cylinder, various suitable inner surfaces such as paraboloidal inner surface substantially.The inner surface on the face of cylinder substantially has been shown among Fig. 6 and 7, or the columned inner space 161 of cardinal principle.
According to some embodiments of the present invention, shown in Figure 12 and 13, said second electrode 19 can have the shape of ring-type substantially.In addition, second electrode 19 of ring-type can have the inner surface of taper surface substantially, the inner surface on the face of cylinder, various suitable inner surfaces such as paraboloidal inner surface substantially.Second electrode 19 can be the disc shaped that is provided with through hole, and through hole is used for holding wire and is connected with ion collection spare 17.The inner surface on the face of cylinder substantially has been shown among Figure 12 and 13.In addition, second electrode 19 can be any suitable, well known in the art, make ion in ionic migration spectrometer, carry out the migration electrode of travel motion.
According to some embodiments of the present invention; As shown in Figure 3; The ion collection device 50 of described ionic migration spectrometer can also comprise: be arranged on second insulating part 20 in downstream of the ion migratory direction 80 of said second electrode 19, this radome 21 is spaced apart through said second insulating part 20 with said second electrode 19.
Said second insulating part 20 can have the tubular shape shown in Figure 14 and 15, sheet shaped piece, or any other suitable shape.This radome 21 can pass through suitable at interval space with said second electrode 19, or utilizes the insulating barrier on that is formed in this radome 21 and said second electrode 19 to separate.In addition, this radome 21 can be separated through any suitable alternate manner in this area with said second electrode 19.For example, the thickness of described second insulating part can be less than 0.5 millimeter.
According to some embodiments of the present invention, like Fig. 3,8, shown in 9, said ion collection spare 17 also comprises the segment signal output 172 that is connected with this ion collection part 171; And said radome 21 is suitable for being connected with first conductive layer 232 in heart yearn 231 outsides of coaxial cable 23, and the heart yearn 23 of this coaxial cable 23 is connected with the segment signal output 172 of this ion collection spare 17, is used for from segment signal output 172 output signals.
According to some embodiments of the present invention, as shown in Figure 3, the coaxial setting substantially of said first electrode 16 and second electrode 19.As selection, said first electrode 16 and second electrode 19 can adopt other suitable manner to be provided with, and for example said first electrode 16 and second electrode 19 can the disalignment settings.
According to some embodiments of the present invention, like Figure 10, shown in 11, said first insulating part 18 can have a plurality of through holes.As selection; Shown in Figure 10 and 11; Said first insulating part 18 has central through hole 181 at core, and the segment signal output 172 of ion collection spare 17 stretches out through this central through hole 181, and said first insulating part 18 also comprises a plurality of through holes 182 around said central through hole 181.
According to some embodiments of the present invention, as shown in Figure 3, this amplification circuits 60 comprises amplifying circuit 63.The input 62 of amplifying circuit 63 receives from the signal of said segment signal output 172 outputs through the heart yearn 231 of said coaxial cable 23, and said radome 21 is connected with the simulation ground 26 of amplifying circuit 63 through first conductive layer 232 of said coaxial cable 23.
In some embodiments of the invention, as shown in Figure 3, said second electrode 19 is connected to the simulation ground 26 of amplifying circuit 63 in output 61 sides of said amplifying circuit 63.
In some embodiments of the invention, as shown in Figure 3, described ionic migration spectrometer can also comprise: the amplifying circuit screening can 25 that is used to shield amplifying circuit; And the external conductive casing 22 of ion collection district part 90.Said coaxial cable 23 comprises second conductive layer 232 that is arranged on first conductive layer, 231 outsides, and this second conductive layer 232 connects the external conductive casing 22 of amplifying circuit screening can 25 and ion collection district part.
In some embodiments of the invention; As shown in Figure 3; Said migration electrode supply 70 has the lead-out terminal 73 and high-voltage output end 72 of ground connection; This ground connection lead-out terminal 73 is connected with second electrode 19 through lead 28, and is connected to the simulation ground 26 of said amplifying circuit 63 in output 61 sides of amplifying circuit 63.As shown in Figure 3, migration electrode supply 70 also has migration electrode supply screening can 27, and screening can 27 is connected with the shell 22 of ion collection district part 90 through lead 24.Lead 24 constitutes coaxial cable with lead 28, and coaxial cable 23 is triaxial cables, as shown in Figure 3.
In some embodiments of the invention, the insulation of described triaxial cable and sheath material are polytetrafluoroethylene.
Owing to take above structure, suppress the aperture plate 15 and first electrode 16 and be in equipotential, and form focusing electric field between the faraday's dish as ion collection spare 17, the ion that gets into collecting region can not scatter on the radome 21, has improved collection rate.
In addition; In some embodiments of the invention, second electrode 19 electrically separates with radome 21, and high pressure ground and analog signal ground is separated before the sensitiveest amplifying circuit; The simulation ground that amplifies later position at signal links to each other, and has reduced the influence that high pressure ground wire noise amplifies signal.
In addition, because the inhibition aperture plate 15 and first electrode 16 can constitute focusing structure, can do lessly to the area of ion flight faraday's card as ion collection spare 17.
In addition; In some embodiments of the invention; Second insulating part 20 is a cellular, is provided with second electrode 19, and far away with radome 21 distances as faraday's dish of ion collection spare 17; Can effectively reduce the electric capacity between faraday's dish and the radome 21 thus, reduce the junction capacitance noise of front-end circuit.
In addition, in some embodiments of the invention, second electrode 19 is in equipotential with radome 21, under the situation of the screening ability that does not reduce radome 21, has improved signal to noise ratio.
Claims (23)
1. the ion collection device of an ionic migration spectrometer comprises:
Be used to suppress the inhibition aperture plate of migration area ion travel motion to the ion collection influence;
Be arranged on first electrode that suppresses downstream aperture plate, the ion migratory direction, this first electrode is with inhibition aperture plate mechanical connection and be electrically connected;
The ion collection spare that is used for collection of ions, this ion collection spare comprise the ion collection part,
Wherein this first electrode within it portion form the space, the ion collection of said ion collection spare partly is arranged in the space that the inside of this first electrode forms.
2. the ion collection device of ionic migration spectrometer according to claim 1 also comprises:
Be arranged on second electrode in downstream said first electrode, the ion migratory direction, this second electrode is configured for making ion in ionic migration spectrometer, to carry out the grounding electrode in the migration electrode of travel motion; And
Be arranged on this first electrode and second electrode between first insulating part, this ion collection spare is connected in said first insulating part.
3. the ion collection device of ionic migration spectrometer according to claim 2 also comprises:
Be arranged on the radome in downstream said second electrode, the ion migratory direction, this radome and said second electrode gap are opened.
4. the ion collection device of ionic migration spectrometer according to claim 1, wherein said suppressor netting gear have flat substantially shape.
5. the ion collection device of ionic migration spectrometer according to claim 4, wherein:
Suppress the aperture plate and first electrode and be in equipotential, and form focusing electric field between the ion collection spare.
6. the ion collection device of ionic migration spectrometer according to claim 1, wherein said first electrode have the shape of ring-type substantially.
7. the ion collection device of ionic migration spectrometer according to claim 2, wherein said second electrode have the shape of ring-type substantially.
8. the ion collection device of ionic migration spectrometer according to claim 4 also comprises:
Be arranged on second insulating part in downstream of the ion migratory direction of said second electrode, this radome and said second electrode are spaced apart through said second insulating part.
9. the ion collection device of ionic migration spectrometer according to claim 4,
Wherein said ion collection spare also comprises the segment signal output that partly is connected with this ion collection; And
Wherein said radome is suitable for being connected with first conductive layer in the heart yearn of the coaxial cable outside, and the heart yearn of this coaxial cable is connected with the segment signal output of this ion collection spare, is used for exporting signal from segment signal output.
10. the ion collection device of ionic migration spectrometer according to claim 7, wherein said first electrode have the shape of ring-type substantially, and said first electrode and the coaxial setting substantially of second electrode.
11. the ion collection device of ionic migration spectrometer according to claim 2, wherein said first insulating part has the shape of general plate or the shape of plate-like.
12. the ion collection device of ionic migration spectrometer according to claim 11, wherein said first insulating part has a plurality of through holes.
13. an ionic migration spectrometer comprises:
The ion collection district part that is used for collection of ions; And
Be arranged on the ion collection device of said ion collection district part,
Wherein this ion collection device comprises:
Be used to suppress the inhibition aperture plate of migration area ion travel motion to the ion collection influence;
Be arranged on first electrode that suppresses downstream aperture plate, the ion migratory direction, this first electrode is with inhibition aperture plate mechanical connection and be electrically connected;
The ion collection spare that is used for collection of ions, this ion collection spare comprise the ion collection part,
Wherein this first electrode within it portion form the space, the ion collection of said ion collection spare partly is arranged in the space that the inside of this first electrode forms.
14. the ion collection device of ionic migration spectrometer according to claim 13 also comprises:
Be arranged on second electrode in downstream said first electrode, the ion migratory direction, this second electrode is configured for making ion in ionic migration spectrometer, to carry out the grounding electrode in the migration electrode of travel motion; And
Be arranged on this first electrode and second electrode between first insulating part, this ion collection spare is connected in said first insulating part.
15. ionic migration spectrometer according to claim 14 also comprises:
Be arranged on the radome in downstream said second electrode, the ion migratory direction, this radome and said second electrode gap are opened.
16. ionic migration spectrometer according to claim 13, wherein said suppressor netting gear have flat substantially shape.
17. the ion collection device of ionic migration spectrometer according to claim 16, wherein:
Suppress the aperture plate and first electrode and be in equipotential, and form focusing electric field between the ion collection spare.
18. ionic migration spectrometer according to claim 13, wherein said first electrode have the shape of ring-type substantially.
19. ionic migration spectrometer according to claim 15, wherein said ion collection spare also comprises the segment signal output that partly is connected with this ion collection, and
Wherein said radome is connected with first conductive layer in the heart yearn outside of coaxial cable, and the heart yearn of this coaxial cable is connected with the segment signal output of this ion collection spare, is used for from segment signal output output signal.
20. ionic migration spectrometer according to claim 19 also comprises:
Amplifying circuit, the input of this amplifying circuit receives from the signal of said segment signal output output through the heart yearn of said coaxial cable, and said radome is connected with the simulation ground of amplifying circuit through first conductive layer of said coaxial cable.
21. ionic migration spectrometer according to claim 20, wherein:
Said second electrode is connected to the simulation ground of amplifying circuit at the output end of said amplifying circuit.
22. ionic migration spectrometer according to claim 20 also comprises:
Be used to shield the amplifying circuit screening can of amplifying circuit; And
The external conductive casing of ion collection district part,
Wherein said coaxial cable comprises second conductive layer that is arranged on first conductive layer outside, and this second conductive layer connects the external conductive casing of amplifying circuit screening can and ion collection district part.
23. ionic migration spectrometer according to claim 20 also comprises:
Being used to the migration electrode provides the migration electrode supply of power supply, and said migration electrode supply has the lead-out terminal of ground connection, and this ground connection lead-out terminal is connected with second electrode, and is connected to the simulation ground of said amplifying circuit at the output end of amplifying circuit.
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| CN201110438896.8A CN102522308B (en) | 2009-06-30 | 2009-06-30 | Ion mobility spectrometer and ion collection device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110672708A (en) * | 2019-10-28 | 2020-01-10 | 大连工业大学 | Ethylene detection method based on ion mobility spectrometry technology |
| CN112345621A (en) * | 2019-07-23 | 2021-02-09 | 同方威视技术股份有限公司 | Trace detection device |
| CN113092125A (en) * | 2021-04-06 | 2021-07-09 | 江苏深蓝航天有限公司 | Blocking potential analyzer capable of collecting in multiple directions |
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| US5200614A (en) * | 1992-01-16 | 1993-04-06 | Ion Track Instruments, Inc. | Ion mobility spectrometers |
| US20010032929A1 (en) * | 2000-02-29 | 2001-10-25 | Katrin Fuhrer | Mobility spectrometer |
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| US5021654A (en) * | 1989-04-28 | 1991-06-04 | Environmental Technologies Group, Inc. | All ceramic ion mobility spectrometer cell |
| US5200614A (en) * | 1992-01-16 | 1993-04-06 | Ion Track Instruments, Inc. | Ion mobility spectrometers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112345621A (en) * | 2019-07-23 | 2021-02-09 | 同方威视技术股份有限公司 | Trace detection device |
| US11346808B2 (en) | 2019-07-23 | 2022-05-31 | Nuctech Company Limited | Trace detection device |
| CN110672708A (en) * | 2019-10-28 | 2020-01-10 | 大连工业大学 | Ethylene detection method based on ion mobility spectrometry technology |
| CN113092125A (en) * | 2021-04-06 | 2021-07-09 | 江苏深蓝航天有限公司 | Blocking potential analyzer capable of collecting in multiple directions |
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| CN102522308B (en) | 2014-07-30 |
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