CN110189979A - Non-aligned multi-section quadrupole rod guided ion transmission device - Google Patents
Non-aligned multi-section quadrupole rod guided ion transmission device Download PDFInfo
- Publication number
- CN110189979A CN110189979A CN201910129912.1A CN201910129912A CN110189979A CN 110189979 A CN110189979 A CN 110189979A CN 201910129912 A CN201910129912 A CN 201910129912A CN 110189979 A CN110189979 A CN 110189979A
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- China
- Prior art keywords
- bar
- rod
- group
- positive pole
- bar group
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/06—Electron- or ion-optical arrangements
- H01J49/062—Ion guides
- H01J49/063—Multipole ion guides, e.g. quadrupoles, hexapoles
Abstract
The invention discloses a non-aligned multi-section quadrupole rod guided ion transmission device, which comprises a first rod group and a second rod group, wherein the first rod group and the second rod group are arranged in parallel; the first rod group comprises a first positive pole rod and a first negative pole rod, the number of the first positive pole rod and the number of the first negative pole rod are respectively two, the first positive pole rod and the first negative pole rod are arranged at intervals, and the four rod bodies are parallel to each other and are uniformly arranged around the same parallel line; the second rod group structure is the same as the first rod group structure and is provided with a second positive pole rod and a second negative pole rod; parallel lines surrounded by the rod bodies of the first rod group and the second rod group are overlapped with each other, and the first positive pole rod and the second positive pole rod are staggered from each other on the cross section; the first positive pole rod and the second positive pole rod are connected to the positive end of the radio frequency signal source through leads, and the first negative pole rod and the second negative pole rod are connected to the negative end of the radio frequency signal source through leads.
Description
Technical field
The present invention relates to mass spectrum guidance technology field, specially a kind of ion transmission of non-alignment multisection type quadrupole rod guiding
Device.
Background technique
Mass spectrometric analysis method is the goldstandard in analysis field, depend on mass spectrometric highly sensitive, high resolution and
High specific detection, the key physical structure member of spectrometer system generally comprise ion source, ion guides, mass analyzer,
Ion detector etc., and mass spectrometric high sensitivity be largely dependent upon between ion source and mass analyzer from
Son guiding.The directions such as the research of ion guides at present concentrates on past high-transmission efficiency, massless is discriminated against, neutral component filters out.
Most common ion guides be mainly be applied with the level four bars of radio-frequency voltage, while there are also ion lens, from
The form that sub- funnel, six grades of bars, octupole bar or a variety of guidings are used in combination.Quadrupole ion guiding is by four with radio-frequency voltage
Accurate parallel bar constitute.What is wherein applied on two opposite electrodes is equipotential, and it is anti-for applying between adjacent electrode
To point.The characteristics of due to radio-frequency voltage high speed alternation, ion can be converted between principle electrode two states close, and lead to
Cross reasonable disposition voltage conditions may be implemented ion it is orderly pass through level four bars.Same sextupole bar is also similar with octupole bar.
It seldom will appear the form of single quadrupole rod guiding in current actual application, the ion transmission efficiency of level-one guiding is opposite
It is lower.The big form for mostly using composite guide, such as quadrupole rod+level four bars, level four bars+sextupole bar, sextupole bar+octupole bar are a variety of
The combining form of multiplicity, and electrostatic ionic lens can be also set between different guide bars, it corrects due to electrode both ends
The loss of fringing field effect's bring ion irregular movement bring.What is more will appear the feelings of three-level, level Four directed transmission
Condition, can also compound ion transport devices all kinds of including ion funnel etc..The mode of these multistage guidings improves the efficiency of transmission,
But the auxiliary facility of instrument and the construction requirements of support circuit are considerably increased, these undoubtedly increase the volume and manufacture of instrument
Cost.
Summary of the invention
The purpose of the present invention is to provide a kind of ion transport devices of non-alignment multisection type quadrupole rod guiding, on solving
State the problem of proposing in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of non-alignment multisection type quadrupole rod guiding from
Sub- transmitting device, including bar group, the bar group are provided with multiple groups, and adjacent bar group is respectively set to the first bar group, the second bar group,
The first bar group, the second bar group are arranged in parallel；First bar group includes the first positive pole bar, the first cathode bar, the first anode
Bar, the first cathode bar are respectively arranged with two, and the first positive pole bar, the first cathode bar interval are arranged, and are mutually misaligned；Four bodies of rod
It is parallel to each other and is uniformly arranged around same root parallel lines；Second bar group structure is identical as the first bar group structure, is provided with second
Positive pole bar, the second cathode bar；The first bar group, the second bar group body of rod are arranged surrounded parallel lines and overlap, and first just
Pole bar mutually staggers on section with the second positive pole bar；The first positive pole bar is connected to radio frequency by conducting wire with the second positive pole bar
Signal source positive terminal, the first cathode bar and the second cathode bar are connected to radio-frequency signal source negative pole end by conducting wire.
Preferably, non-conducting material is provided between the first bar group, the second bar group；The non-conducting material includes exhausted
Edge part, ion lens and air.
Preferably, the body of rod number being arranged in the bar group includes but is not limited to four, the six roots of sensation, eight, ten, right respectively
Answer quadrupole rod, sextupole bar, octupole bar, ten pole bars；And the group between bar group is combined into any a variety of bar group hybrid combinings.
Preferably, the angle between the described first positive pole bar, the second positive pole bar and parallel lines line is set as α, and α can not be
0°、90°、180°、270°。
Compared with prior art, the beneficial effects of the present invention are: the present invention is applied in combination using multiple groups quadrupole rod, one is used
Radio-frequency power supply power supply is covered, instrument cost and volume are effectively saved；And coaxial placement is used between multiple groups quadrupole rod, and it is different
The off-axis modes of emplacement of each electrode of group quadrupole rod, can effectively prevent the hypotelorism under hyperbar, high voltage from putting
Electricity can also be offset each other by the edge high-order field between bar group, ensure that the exogenous kinetic energy of ion transmission process is drawn
Rise dissociate, collide with each other certainly etc. it is a series of can generate the case where ion is lost, greatly improve ion transmission efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is bar group attachment structure schematic diagram of the invention；
Fig. 3 is primary deflector angle cross section structure schematic diagram of the invention；
Fig. 4 is large deflection angle degree cross section structure schematic diagram of the invention；
Fig. 5 is preferred cross-sections structural schematic diagram of the invention；
Fig. 6 is the relation schematic diagram of added radio-frequency voltage in losses of ions rate-guiding of the invention；
Figure label: 1, the first bar group；11, the first positive pole bar；12, the first cathode bar；2, the second bar group；21, second just
Pole bar；22, the second cathode bar；3, radio-frequency signal source；31, conducting wire.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal"
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution: a kind of ion biography of non-alignment multisection type quadrupole rod guiding
Defeated device, including bar group, the bar group are provided with multiple groups, and adjacent bar group is respectively set to the first bar group 1, the second bar group 2, institute
It is arranged in parallel to state the first bar group 1, the second bar group 2；First bar group 1 include the first positive pole bar 11, the first cathode bar 12, first
Positive pole bar 11, the first cathode bar 12 are respectively arranged with two, and the first positive pole bar 11, the first cathode bar 12 interval are arranged, and mutually not
Alignment；Four bodies of rod are parallel to each other and are uniformly arranged around same root parallel lines；Second bar group, 2 structure and 1 structure of the first bar group
It is identical, it is provided with the second positive pole bar 21, the second cathode bar 22；The first bar group 1, the setting of 2 body of rod of the second bar group are surrounded
Parallel lines overlap, and the first positive pole bar 11 mutually staggers on section with the second positive pole bar 21；The first positive pole bar 11 with
Second positive pole bar 21 is connected to 3 positive terminal of radio-frequency signal source by conducting wire 31, and the first cathode bar 12 passes through with the second cathode bar 22
Conducting wire 31 is connected to 3 negative pole end of radio-frequency signal source.
Further, non-conducting material is provided between the first bar group 1, the second bar group 2；The non-conducting material packet
Include insulating element, ion lens and air.
Further, the body of rod number being arranged in the bar group includes but is not limited to four, the six roots of sensation, eight, ten, difference
Corresponding quadrupole rod, sextupole bar, octupole bar, ten pole bars；And the group between bar group is combined into any a variety of bar group hybrid combinings.
Further, the angle between the described first positive pole bar 11, the second positive pole bar 21 and parallel lines line is set as α, α
It can not be 0 °, 90 °, 180 °, 270 °.
Working principle: bar group is provided with multiple groups, and adjacent bar group is respectively the first bar group 1, the second bar group 2, every group of bar group
Inside it is provided with the multipair body of rod, each pair of body of rod is respectively positive pole bar, cathode bar, in the first adjacent bar group 1, the second bar group 2 just
Pole bar, cathode bar mutually stagger；As shown in figure 3, the folder between the first positive pole bar 11, the second cathode bar 21 and parallel lines line
The case where angle α is less than 90 °, as shown in figure 4, it is greater than 90 ° for α, as shown in figure 5, it is equal to 45 ° for α, each electrode sections average mark
The state matched；The body of rod in Fig. 4, its placement is equal to the state of (α -90 °) on geometric meaning, but different bar group spacing
Changed from the current potential on two nearest electrodes.It can be realized by adjusting the value of the α for various sizes of guiding
The promotion of guiding performance is realized in the optimization of combined edge complex higher order field.
The distance between the length of the body of rod, bar group are specifically adjusted all in accordance with concrete condition；Space between different bar groups can
To be set as can use electrical insulator connection, condenser lens can also be placed in middle position；Radio-frequency signal source 3 passes through conducting wire
31 apply positive radiofrequency signal to the first positive pole bar 11 and the second positive pole bar 21 respectively, by conducting wire 31 respectively to the first cathode
Bar 12 and the second cathode bar 22 apply the radiofrequency signal of negative sense.The adjacent middle position of first bar group 1, the second bar group 2 is edge
Position existing for, and influence maximum position to ion passes through the first bar group 1, the electrode asymmetry of the second bar group 2
Electric field integrates additivity, makes up the high-order field defect between bar group, reduces by the 1 terminal edge field-effect of the first bar group caused by ion
The influence of unstable definite divergence.
Non-alignment multisection type quadrupole rod guiding structure in the present invention can also guide for the quadrupole of three groups of even more multiple groups
The combining form of rod structure, regardless of the quadrupole of three groups of even more multiple groups guides rod structure, the first adjacent bar group 1, the second bar group 2
In the body of rod mutually stagger, although the body of rod between the bar group being separated by section there may be overlapped the case where, guarantee it is adjacent
The bar group body of rod be staggered, be in off-axis state, it will be able to guarantee the effect of bar group.
Non-alignment multisection type quadrupole rod guiding structure only voucher transmission unit and single radio frequency signal source in the present invention, i.e.,
The function similar to conventional multi-level directed transmission can be achieved, it is all simpler to apply demand for either structure or voltage.
Simultaneously by further testing, in identical application voltage conditions, compared to traditional two-part quadrupole rod
Guide mode, non-alignment multisection type quadrupole rod are guided in (V0-p≤500V) losses of ions in high voltage region and are decreased obviously,
Better ion laser propagation effect can exactly be obtained；Test results are shown in figure 6.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of ion transport device of non-alignment multisection type quadrupole rod guiding, it is characterised in that: including bar group, the bar group is set
Multiple groups are equipped with, adjacent bar group is respectively set to the first bar group (1), the second bar group (2), the first bar group (1), the second bar group
(2) arranged in parallel；First bar group (1) include the first positive pole bar (11), the first cathode bar (12), the first positive pole bar (11),
First cathode bar (12) is respectively arranged with two, and the first positive pole bar (11), the first cathode bar (12) interval are arranged, and mutually not right
Together；Four bodies of rod are parallel to each other and are uniformly arranged around same root parallel lines；Second bar group (2) structure and the first bar group (1) are tied
Structure is identical, is provided with the second positive pole bar (21), the second cathode bar (22)；The first bar group (1), second bar group (2) body of rod are set
It sets surrounded parallel lines to overlap, the first positive pole bar (11) mutually staggers on section with the second positive pole bar (21)；It is described
First positive pole bar (11) and the second positive pole bar (21) pass through conducting wire (31) and are connected to radio-frequency signal source (3) positive terminal, the first cathode
Bar (12) and the second cathode bar (22) pass through conducting wire (31) and are connected to radio-frequency signal source (3) negative pole end.
2. a kind of ion transport device of non-alignment multisection type quadrupole rod guiding according to claim 1, it is characterised in that:
Non-conducting material is provided between the first bar group (1), the second bar group (2)；The non-conducting material include insulating element, from
Sub-lens, air.
3. a kind of ion transport device of non-alignment multisection type quadrupole rod guiding according to claim 1, it is characterised in that:
The body of rod number being arranged in the bar group includes but is not limited to four, the six roots of sensation, eight, ten, respectively corresponds quadrupole rod, sextupole
Bar, octupole bar, ten pole bars；And the group between bar group is combined into any a variety of bar group hybrid combinings.
4. a kind of ion transport device of non-alignment multisection type quadrupole rod guiding according to claim 1, it is characterised in that:
Angle between the first positive pole bar (11), the second positive pole bar (21) and parallel lines line is set as α, α can not for 0 °, 90 °,
180°、270°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129912.1A CN110189979A (en) | 2019-02-21 | 2019-02-21 | Non-aligned multi-section quadrupole rod guided ion transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129912.1A CN110189979A (en) | 2019-02-21 | 2019-02-21 | Non-aligned multi-section quadrupole rod guided ion transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110189979A true CN110189979A (en) | 2019-08-30 |
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ID=67713644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910129912.1A Pending CN110189979A (en) | 2019-02-21 | 2019-02-21 | Non-aligned multi-section quadrupole rod guided ion transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110189979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382554A (en) * | 2020-11-12 | 2021-02-19 | 上海裕达实业有限公司 | Device and method for adjusting high-order field in linear ion trap in real time |
-
2019
- 2019-02-21 CN CN201910129912.1A patent/CN110189979A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382554A (en) * | 2020-11-12 | 2021-02-19 | 上海裕达实业有限公司 | Device and method for adjusting high-order field in linear ion trap in real time |
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