GB1341357A - Hyperbolic field mass filter - Google Patents

Hyperbolic field mass filter

Info

Publication number
GB1341357A
GB1341357A GB970272A GB970272A GB1341357A GB 1341357 A GB1341357 A GB 1341357A GB 970272 A GB970272 A GB 970272A GB 970272 A GB970272 A GB 970272A GB 1341357 A GB1341357 A GB 1341357A
Authority
GB
United Kingdom
Prior art keywords
entrance aperture
filter
mass filter
electrodes
field
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.)
Expired
Application number
GB970272A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brubaker W M
Original Assignee
Brubaker W M
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brubaker W M filed Critical Brubaker W M
Publication of GB1341357A publication Critical patent/GB1341357A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/26—Mass spectrometers or separator tubes
    • H01J49/34—Dynamic spectrometers
    • H01J49/42—Stability-of-path spectrometers, e.g. monopole, quadrupole, multipole, farvitrons
    • H01J49/4205—Device types
    • H01J49/421—Mass filters, i.e. deviating unwanted ions without trapping
    • H01J49/4215—Quadrupole mass filters

Abstract

1341357 Mass separators W M BRUBAKER 2 March 1972 [3 March 1971] 9702/72 Heading H1D The D.C. field in the neighbourhood of the ion entrance aperture of a hyperbolic field mass filter is neutralized by one or more auxiliary electrodes so positioned between the ends of the primary electrodes 14, 18 of the filter and the entrance aperture that the A.C. field produced in the neighbourhood of the entrance aperture by the primary electrodes is substantially unaffected. In the quadruple arrangement of Fig. 2, four auxiliary electrodes, only 44 and 48 shown, held at potentials opposite in sense to those of the adjacent primary electrodes, are mounted in recesses in the end plate, 49 of the filter, in which the entrance aperture is formed, such that their faces are flush with the surface of the plate. A monopole arrangement (Fig. 4, not shown) is also described.
GB970272A 1971-03-03 1972-03-02 Hyperbolic field mass filter Expired GB1341357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12048271A 1971-03-03 1971-03-03

Publications (1)

Publication Number Publication Date
GB1341357A true GB1341357A (en) 1973-12-19

Family

ID=22390583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB970272A Expired GB1341357A (en) 1971-03-03 1972-03-02 Hyperbolic field mass filter

Country Status (5)

Country Link
US (1) US3783279A (en)
JP (1) JPS5517465B1 (en)
DE (1) DE2209951A1 (en)
FR (1) FR2128554B1 (en)
GB (1) GB1341357A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937954A (en) * 1973-03-30 1976-02-10 Extranuclear Laboratories, Inc. Methods and apparatus for spatial separation of AC and DC electric fields, with application to fringe fields in quadrupole mass filters
US4032782A (en) * 1976-06-04 1977-06-28 Finnigan Corporation Temperature stable multipole mass filter and method therefor
DE3678085D1 (en) * 1985-10-01 1991-04-18 Finnigan Corp QUADRUPOL MASS FILTER.
US4814613A (en) * 1987-03-06 1989-03-21 Extrel Corporation Collision cell for triple quadrupole tandem mass spectrometry
US6153880A (en) * 1999-09-30 2000-11-28 Agilent Technologies, Inc. Method and apparatus for performance improvement of mass spectrometers using dynamic ion optics
US8258470B2 (en) * 2008-12-15 2012-09-04 Edward W Sheehan Radio frequency lens for introducing ions into a quadrupole mass analyzer
EP3841605A1 (en) * 2018-08-24 2021-06-30 DH Technologies Development Pte. Ltd. Rf/dc cutoff to reduce contamination and enhance robustness of mass spectrometry systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129327A (en) * 1961-12-12 1964-04-14 Bell & Howell Co Auxiliary electrodes for quadrupole mass filters
US3371204A (en) * 1966-09-07 1968-02-27 Bell & Howell Co Mass filter with one or more rod electrodes separated into a plurality of insulated segments
US3617736A (en) * 1968-06-19 1971-11-02 Hewlett Packard Co Quadrupole mass filter with electrode structure for fringing-field compensation
US3560734A (en) * 1968-06-26 1971-02-02 Edward F Barnett Quadrupole mass filter with fringing-field penetrating structure

Also Published As

Publication number Publication date
US3783279A (en) 1974-01-01
JPS5517465B1 (en) 1980-05-12
FR2128554A1 (en) 1972-10-20
FR2128554B1 (en) 1975-10-24
DE2209951A1 (en) 1972-09-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee