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GB1478094A - Mass spectrometer system having programmable sensitivity - Google Patents

Mass spectrometer system having programmable sensitivity

Info

Publication number
GB1478094A
GB1478094A GB843775A GB843775A GB1478094A GB 1478094 A GB1478094 A GB 1478094A GB 843775 A GB843775 A GB 843775A GB 843775 A GB843775 A GB 843775A GB 1478094 A GB1478094 A GB 1478094A
Authority
GB
United Kingdom
Prior art keywords
ion
clock
channel
adjust
selected ion
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
GB843775A
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.)
Thermo Finnigan LLC
Original Assignee
Finnigan Corp
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 Finnigan Corp filed Critical Finnigan Corp
Publication of GB1478094A publication Critical patent/GB1478094A/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

Landscapes

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

Abstract

1478094 Mass spectrometers FINNIGAN CORP 28 Feb 1975 [28 Feb 1974] 8437/75 Heading H1D A mass spectrometer system detects sequentially selected ion fragments and means are provided to automatically adjust the sensitivity of the detection system so as to be appropriate to the ion being investigated. In Fig. 1 a quadrupole spectrometer 21 has a photomultiplier 23A and an amplifier 23B. For each ion there is a channel 25 sequentially brought into operation by a clock 31. The channel 25 is effective to adjust the power supply 22 of the quadrupole to pass the selected ion and to adjust the gain of the amplifier 23B (or of the photo-multiplier 23A by varying its dynode potentials) for the selected ion. The detection of the selected ion proceeds for a time determined by the clock at the end of which a sample and hold circuit supplies an output to a pen-recorder 13. The clock 31 then actuates another channel 25 and another ion is detected and so on.
GB843775A 1974-02-28 1975-02-28 Mass spectrometer system having programmable sensitivity Expired GB1478094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US446775A US3920986A (en) 1974-02-28 1974-02-28 Mass spectrometer system having synchronously programmable sensitivity

Publications (1)

Publication Number Publication Date
GB1478094A true GB1478094A (en) 1977-06-29

Family

ID=23773795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB843775A Expired GB1478094A (en) 1974-02-28 1975-02-28 Mass spectrometer system having programmable sensitivity

Country Status (3)

Country Link
US (1) US3920986A (en)
CA (1) CA1015468A (en)
GB (1) GB1478094A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737199A1 (en) * 1977-08-18 1979-02-22 Varian Mat Gmbh METHOD AND DEVICE FOR THE EXACT DETERMINATION OF THE MASS OF A SUBSTANCE
US4221964A (en) * 1979-02-12 1980-09-09 Inficon Leybold-Heraeus Inc. Control system for mass spectrometer
DE3139975C2 (en) * 1981-10-08 1986-01-16 Finnigan MAT GmbH, 2800 Bremen Device for calibrating detection channels of a mass spectrometer
DE3515766A1 (en) * 1985-05-02 1986-11-06 Spectrospin AG, Fällanden, Zürich ION CYCLOTRON RESONANCE SPECTROMETER
CA1251870A (en) * 1985-12-11 1989-03-28 Peter H. Dawson Quadrupole mass spectrometer
US4855594A (en) * 1988-03-02 1989-08-08 Air Products And Chemicals, Inc. Apparatus and process for improved detection limits in mass spectrometry
US5272337A (en) * 1992-04-08 1993-12-21 Martin Marietta Energy Systems, Inc. Sample introducing apparatus and sample modules for mass spectrometer
JP2894107B2 (en) * 1992-09-30 1999-05-24 松下電器産業株式会社 Illuminated rotary operation type electronic components
US6545271B1 (en) 2000-09-06 2003-04-08 Agilent Technologies, Inc. Mask plate with lobed aperture
WO2002071027A2 (en) * 2001-03-01 2002-09-12 Ciphergen Biosystems, Inc. Variable gain amplification systems and methods
US6649909B2 (en) * 2002-02-20 2003-11-18 Agilent Technologies, Inc. Internal introduction of lock masses in mass spectrometer systems
US7238936B2 (en) * 2004-07-02 2007-07-03 Thermo Finnigan Llc Detector with increased dynamic range
US7078686B2 (en) * 2004-07-23 2006-07-18 Agilent Technologies, Inc. Apparatus and method for electronically driving a quadrupole mass spectrometer to improve signal performance at fast scan rates
US7622713B2 (en) * 2008-02-05 2009-11-24 Thermo Finnigan Llc Method and apparatus for normalizing performance of an electron source
US8426805B2 (en) * 2008-02-05 2013-04-23 Thermo Finnigan Llc Method and apparatus for response and tune locking of a mass spectrometer
US9367711B1 (en) * 2008-09-04 2016-06-14 Intelleflex Corporation Battery assisted RFID tag with square-law receiver and optional part time active behavior
US10881931B2 (en) * 2017-12-07 2021-01-05 John A. Reggiannini Three section golf towel
US11469088B2 (en) 2020-10-19 2022-10-11 Thermo Finnigan Llc Methods and apparatus of adaptive and automatic adjusting and controlling for optimized electrometer analog signal linearity, sensitivity, and range

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823315A (en) * 1972-10-30 1974-07-09 Automated Med Syst Automatic gain method and controller for mass spectrometer

Also Published As

Publication number Publication date
US3920986A (en) 1975-11-18
AU7870675A (en) 1976-09-02
CA1015468A (en) 1977-08-09

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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