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GB1200776A - Ion beam controller for field ionization apparatus - Google Patents

Ion beam controller for field ionization apparatus

Info

Publication number
GB1200776A
GB1200776A GB49130/67A GB4913067A GB1200776A GB 1200776 A GB1200776 A GB 1200776A GB 49130/67 A GB49130/67 A GB 49130/67A GB 4913067 A GB4913067 A GB 4913067A GB 1200776 A GB1200776 A GB 1200776A
Authority
GB
United Kingdom
Prior art keywords
servo
ion beam
circuit
field ionization
cathode
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
GB49130/67A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1200776A publication Critical patent/GB1200776A/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
    • H01J49/10—Ion sources; Ion guns
    • H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1,200,776. Automatic current control. ESSO RESEARCH & ENG.CO. Oct.30, 1967 [Sept.13, 1967], No.49130/67. Heading G3R. [Also in Division H1] A servo-control system for adjusting the voltage applied to the cathode 4 of a field ionization source 9 in a mass spectrometer 1 to eliminate fluctuations in the ion beam current comprises an ion current sampling probe 10 connected to the servo-circuit 30 via a vibrating reed electrometer amplifier 12, a voltage divider 22 and a zero adjust device 26. There is a direct chain drive 34 between the servo-circuit 30 and the voltage supplying circuit 38 for the cathode 4.
GB49130/67A 1967-09-13 1967-10-30 Ion beam controller for field ionization apparatus Expired GB1200776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67353067A 1967-09-13 1967-09-13

Publications (1)

Publication Number Publication Date
GB1200776A true GB1200776A (en) 1970-08-05

Family

ID=24703025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49130/67A Expired GB1200776A (en) 1967-09-13 1967-10-30 Ion beam controller for field ionization apparatus

Country Status (3)

Country Link
US (1) US3518424A (en)
DE (1) DE1648898A1 (en)
GB (1) GB1200776A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373875A1 (en) * 1976-12-07 1978-07-07 Du Pont IMPROVEMENTS TO MASS SPECTROMETERS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624240A (en) * 1970-03-24 1971-11-30 Atomic Energy Commission Feedback stabilization of a magnetically confined plasma
US3648047A (en) * 1970-07-13 1972-03-07 Perkin Elmer Corp Sensitivity control for mass spectrometer
US3911272A (en) * 1974-04-29 1975-10-07 Us Energy Ion illumination angle control for a mass spectrometer
EP3130002A4 (en) 2014-04-11 2017-11-22 The University of Hong Kong Method and system of atmospheric pressure megavolt electrostatic field ionization desorption (apme-fid)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3188472A (en) * 1961-07-12 1965-06-08 Jr Elden C Whipple Method and apparatus for determining satellite orientation utilizing spatial energy sources
US3247373A (en) * 1962-12-18 1966-04-19 Gca Corp Mass spectrometer leak detector with means for controlling the ion source output
US3405263A (en) * 1966-01-14 1968-10-08 Exxon Research Engineering Co Dual mass spectrometer ion source comprising field ionization and electron bombardment sources and the method of use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373875A1 (en) * 1976-12-07 1978-07-07 Du Pont IMPROVEMENTS TO MASS SPECTROMETERS

Also Published As

Publication number Publication date
DE1648898A1 (en) 1971-06-09
US3518424A (en) 1970-06-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees