GB803742A - Improvements relating to mass spectrometers - Google Patents

Improvements relating to mass spectrometers

Info

Publication number
GB803742A
GB803742A GB34432/55A GB3443255A GB803742A GB 803742 A GB803742 A GB 803742A GB 34432/55 A GB34432/55 A GB 34432/55A GB 3443255 A GB3443255 A GB 3443255A GB 803742 A GB803742 A GB 803742A
Authority
GB
United Kingdom
Prior art keywords
scan
mass
slit
varied
effective width
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
GB34432/55A
Inventor
Robert Derek Craig
James Ian Alexander Thompson
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB34432/55A priority Critical patent/GB803742A/en
Priority to DEM32504A priority patent/DE1189291B/en
Priority to FR1161889D priority patent/FR1161889A/en
Priority to US625420A priority patent/US2837653A/en
Publication of GB803742A publication Critical patent/GB803742A/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
    • H01J49/02—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

803,742. Mass spectrometers. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 15, 1956 [Dec. 1, 1955]. No. 34432/55. Drawings to Specification. Class 39(1). [Also in Group XL(c)] In a mass spectrometer the mass spectrum is swept across the collector resolving slit and the effective width of the slit is varied inversely with respect to mass number while the rate of scan is varied so that for each mass number the time of collection is the same. The overall time of scan is then adjusted to the minimum consistent with obtaining a given recording accuracy. The effective width of the slit may be varied electrically as described in Specification 759,917 and controlled by the magnet current in the case of magnetic scan or by the accelerating voltage in the case of electrostatic scan. The desired variation of control voltage which may be in steps or may approximate a smooth curve is obtained by means of a thermionic amplifier circuit employing negative feedback (see Group XL(c). The direction of scan may be from heavy to light elements or vice versa.
GB34432/55A 1955-12-01 1955-12-01 Improvements relating to mass spectrometers Expired GB803742A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB34432/55A GB803742A (en) 1955-12-01 1955-12-01 Improvements relating to mass spectrometers
DEM32504A DE1189291B (en) 1955-12-01 1956-11-29 mass spectrometry
FR1161889D FR1161889A (en) 1955-12-01 1956-11-30 Further training in mass spectrometers
US625420A US2837653A (en) 1955-12-01 1956-11-30 Mass spectrometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34432/55A GB803742A (en) 1955-12-01 1955-12-01 Improvements relating to mass spectrometers

Publications (1)

Publication Number Publication Date
GB803742A true GB803742A (en) 1958-10-29

Family

ID=10365580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34432/55A Expired GB803742A (en) 1955-12-01 1955-12-01 Improvements relating to mass spectrometers

Country Status (4)

Country Link
US (1) US2837653A (en)
DE (1) DE1189291B (en)
FR (1) FR1161889A (en)
GB (1) GB803742A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231735A (en) * 1959-06-11 1966-01-25 John L Peters Mass spectrometer leak detector with an accelerator section between plural analyzersand the method for using same
US3217161A (en) * 1961-12-29 1965-11-09 Ass Elect Ind Electrode means to electrostatically focus ions separated by a mass spectrometer on a detector
DE1498531C3 (en) * 1963-11-27 1973-11-29 Varian Mat Gmbh, 2800 Bremen Device for determining the mass number from the field strength prevailing in the gap of the separating magnet of a mass spectrometer
JPS6313249A (en) * 1986-07-04 1988-01-20 Hitachi Ltd Mass-spectrometer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834023C (en) * 1948-10-02 1952-03-13 Atlas Werke Ag Mass spectrograph

Also Published As

Publication number Publication date
US2837653A (en) 1958-06-03
FR1161889A (en) 1958-09-05
DE1189291B (en) 1965-03-18

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