GB1350980A - Method and apparatus for mass analysis by multi-pole mass filters - Google Patents

Method and apparatus for mass analysis by multi-pole mass filters

Info

Publication number
GB1350980A
GB1350980A GB2422771A GB2422771A GB1350980A GB 1350980 A GB1350980 A GB 1350980A GB 2422771 A GB2422771 A GB 2422771A GB 2422771 A GB2422771 A GB 2422771A GB 1350980 A GB1350980 A GB 1350980A
Authority
GB
United Kingdom
Prior art keywords
ion
voltage
field
mass
ions
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
GB2422771A
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.)
Varian Mat GmbH
Original Assignee
Varian Mat GmbH
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 Varian Mat GmbH filed Critical Varian Mat GmbH
Publication of GB1350980A publication Critical patent/GB1350980A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/004—Combinations of spectrometers, tandem spectrometers, e.g. MS/MS, MSn
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/44—Energy spectrometers, e.g. alpha-, beta-spectrometers
    • H01J49/46—Static spectrometers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

1350980 Mass spectrometers VARIAN MAT GmbH 19 April 1971 [17 March 1970] 24227/71 Heading H1D In a mass analysis apparatus in which a beam of ions is passed through a mutipole mass filter, the range of ion masses transmitted through the filter is scanned by changing the values of the A.C. and D.C. field voltages applied to the poles of the filter whilst maintaining constant the value of a/q, where the function a = f(q) defines stable and unstable ion ton trajectories in the mutipole field and a and q areeach dependent upon the ion mass and are respectively dependent upon the D.C. component of the field voltage and upon the A.C. component of the field voltage. In the preferred embodiment, the D.C. component is zero and the filter transmits all ions having masses above a cut-off value determined by the value of q 0 at which the ion trajectory becomes unstable. Ion electron beam 6 produces an ion beam 9 in an ion source 1 containing a substance to be analyzed. The ion beam axially enters the quadrupole field 2 produced by four rods to which voltage source 14 supplies an adjustable D.C. voltage and/or an adjustable A.C. voltage. As the field voltage is raised, the point q o of instability is reached for ions of progressively increasing mass so that the transmitted ion beam exhibits a step spectrum as ions are successively removed from the beam. To convert the step spectrum to a conventional line spectrum there is provided an energy analyzing system comprising an entrance electrode 15 and part-spherical mesh electrode 16 (both of which are earthed) and a retarding/collecting electrode 17 to which is applied a voltage adjustable so that only the most energetic ions, whose trajectories in the quadrupole field are associated with a value of q close to the parameter q 0 reach the collector. In alternative arrangements Figs. 8 and 9 (not shown) the energy analysis is effected by an electrostatic quadrant or a magnetic field.
GB2422771A 1970-03-17 1971-04-19 Method and apparatus for mass analysis by multi-pole mass filters Expired GB1350980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702012479 DE2012479C3 (en) 1970-03-17 1970-03-17 Method and device for mass analysis with the aid of a mass filter

Publications (1)

Publication Number Publication Date
GB1350980A true GB1350980A (en) 1974-04-24

Family

ID=5765253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2422771A Expired GB1350980A (en) 1970-03-17 1971-04-19 Method and apparatus for mass analysis by multi-pole mass filters

Country Status (3)

Country Link
DE (1) DE2012479C3 (en)
FR (1) FR2083346B1 (en)
GB (1) GB1350980A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159055A (en) * 1981-03-25 1982-10-01 Toshiba Corp Manufacture of semiconductor device
DE102014110334A1 (en) * 2014-07-22 2016-01-28 Krohne Messtechnik Gmbh Method for separating electrically charged particles with respect to their energy and energy filters

Also Published As

Publication number Publication date
DE2012479B2 (en) 1974-07-18
DE2012479C3 (en) 1975-02-27
DE2012479A1 (en) 1971-10-21
FR2083346A1 (en) 1971-12-17
FR2083346B1 (en) 1973-06-08

Similar Documents

Publication Publication Date Title
EP0083603B1 (en) An improved time-of-flight mass spectrometer
US4214160A (en) Mass spectrometer system and method for control of ion energy for different masses
GB1145107A (en) Ion beam microanalyser
DE112014006538T5 (en) Method of targeted mass spectrometric analysis
GB773689A (en) Improved arrangements for separating or separately detecting charged particles of different specific charges
GB1326279A (en) Mass spectrometers
US4672204A (en) Mass spectrometers
DE19635645C2 (en) Method for the high-resolution spectral recording of analyte ions in a linear time-of-flight mass spectrometer
US2633539A (en) Device for separating particles of different masses
GB1440727A (en) Double-focussing mass spectrometers
US4189640A (en) Quadrupole mass spectrometer
GB1350980A (en) Method and apparatus for mass analysis by multi-pole mass filters
Brinkmann A modified quadrupole mass filter for the separation of ions of higher masses with high transmission
Wallace et al. The New Zealand accelerator mass spectrometry facility
DE1598392A1 (en) Quadrupole mass spectrograph
US2975278A (en) Mass spectrometer
DE1498983A1 (en) Method and device for separating ions of different specific electrical charges
US2606291A (en) Method and apparatus for material separation
GB1134448A (en) Double focussing mass spectrometer
GB1487199A (en) Quadrupole field mass analyser
Braams et al. Composition of Noble Gas Ion Beams Produced with a Duoplasmatron
US2845539A (en) Mass spectrometry
US2735942A (en) brubaker
JPS5494092A (en) Mass analyzer
JPS57109244A (en) Ion source

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee