GB957084A - Improvements relating to mass spectrometers - Google Patents

Improvements relating to mass spectrometers

Info

Publication number
GB957084A
GB957084A GB3755561A GB3755561A GB957084A GB 957084 A GB957084 A GB 957084A GB 3755561 A GB3755561 A GB 3755561A GB 3755561 A GB3755561 A GB 3755561A GB 957084 A GB957084 A GB 957084A
Authority
GB
United Kingdom
Prior art keywords
field
coil
auxiliary
ion
drift
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
GB3755561A
Inventor
George Alan Errock
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3755561A priority Critical patent/GB957084A/en
Priority to FR912378A priority patent/FR1339065A/en
Priority to DE19621498511 priority patent/DE1498511A1/en
Priority to FR948451A priority patent/FR84379E/en
Publication of GB957084A publication Critical patent/GB957084A/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
    • H01J49/28—Static spectrometers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/022—Circuit arrangements, e.g. for generating deviation currents or voltages ; Components associated with high voltage supply

Landscapes

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

Abstract

957,084. Mass spectrometers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 9, 1962 [Oct. 19, 1961], No. 37555/61. Heading H1D. [Also in Division G3] A mass spectrometer includes means for providing an auxiliary ion controlling field which tends to prevent drift of the ion beam trajectory relative to the collector assembly. As shown, a mass spectrometer comprises an ion source 1, an electrostatic analyser 10, a magnetic analyser 2 having a field coil 5, a collector 3 and a connecting duct 4. The coil 5 is supplied from a circuit including a voltage source 6 in series with a variable impedance 7 and a sensing resistor 8. A scanning control unit 9 either provides a waveform to vary the current in the coil so that a range of ions is collected or, alternatively, provides one of two or more fixed voltages so that ions of a particular mass are collected. To counteract for the drift of the ion beam trajectory due to variation in the parameters of the analysing system, a drift control unit 11 provides a steadily varying voltage of suitable magnitude and polarity. The difference between the voltage across resistor 8 and the voltage supplied by the units 9, 11 is amplified by a difference amplifier 12 the output from which controls the impedance 7 so as to control the current through the coil 5 and reduce the input of the amplifier 12 to zero. The output from the drift control unit 11 may be selected manually, e.g. in accordance with a meter or oscillator reading taken at the collector 3, or it may be controlled automatically in accordance with the output of a sensing unit, such as a Hall plate or a vibrating coil, located in the magnetic field of the analyser 2. The auxiliary ion controlling field may be an auxiliary magnetic field spaced from the main deflecting field (Fig. 1a, not shown), on auxiliary electrostatic field coincident with or spaced from the main electrostatic field (Figs. 2 and 2a, not shown), or an auxiliary ion accelerating field (Fig. 3, not shown).
GB3755561A 1961-10-19 1961-10-19 Improvements relating to mass spectrometers Expired GB957084A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3755561A GB957084A (en) 1961-10-19 1961-10-19 Improvements relating to mass spectrometers
FR912378A FR1339065A (en) 1961-10-19 1962-10-16 Improvements in mass spectrometers
DE19621498511 DE1498511A1 (en) 1961-10-19 1962-10-18 mass spectrometry
FR948451A FR84379E (en) 1961-10-19 1963-09-24 Improvements in mass spectrometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3755561A GB957084A (en) 1961-10-19 1961-10-19 Improvements relating to mass spectrometers

Publications (1)

Publication Number Publication Date
GB957084A true GB957084A (en) 1964-05-06

Family

ID=10397341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3755561A Expired GB957084A (en) 1961-10-19 1961-10-19 Improvements relating to mass spectrometers

Country Status (2)

Country Link
DE (1) DE1498511A1 (en)
GB (1) GB957084A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610921A (en) * 1968-05-01 1971-10-05 Perkin Elmer Corp Metastable mass analysis
US3689764A (en) * 1966-12-01 1972-09-05 Ass Elect Ind Mass spectrometer scanning
US3814936A (en) * 1965-08-12 1974-06-04 Ass Elect Ind Mass spectrometers and mass spectrometry
US4066895A (en) * 1975-09-12 1978-01-03 Shimadzu Seisakusho Ltd. Scanning mass spectrometer having constant magnetic field

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814936A (en) * 1965-08-12 1974-06-04 Ass Elect Ind Mass spectrometers and mass spectrometry
US3689764A (en) * 1966-12-01 1972-09-05 Ass Elect Ind Mass spectrometer scanning
US3610921A (en) * 1968-05-01 1971-10-05 Perkin Elmer Corp Metastable mass analysis
US4066895A (en) * 1975-09-12 1978-01-03 Shimadzu Seisakusho Ltd. Scanning mass spectrometer having constant magnetic field

Also Published As

Publication number Publication date
DE1498511A1 (en) 1969-04-17

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