GB972344A - Improvements in magnetron-type ionization gauges - Google Patents

Improvements in magnetron-type ionization gauges

Info

Publication number
GB972344A
GB972344A GB36210/62A GB3621062A GB972344A GB 972344 A GB972344 A GB 972344A GB 36210/62 A GB36210/62 A GB 36210/62A GB 3621062 A GB3621062 A GB 3621062A GB 972344 A GB972344 A GB 972344A
Authority
GB
United Kingdom
Prior art keywords
cathode
electrode
gauge
monitor
magnetron
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
GB36210/62A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB972344A publication Critical patent/GB972344A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

972,344. Ionization manometers. GENERAL ELECTRIC CO. Sept. 24, 1962 [Sept. 26, 1961], No. 36210/62. Heading H1D. In a magnetron-type ionization gauge comprising a thermionic cathode 6, an anode 3, an ion collecting electrode 11, and electrical bias and magnetic field producing means for operating the gauge beyond cut-off conditions, whereby electrons form a rotating space charge cloud surrounding the cathode, an electrode 17 is provided adjacent the cathode, and within the space charge cloud, to monitor the electron emission from the cathode. The monitor electrode current may serve as a signal for controlling the power supply to the cathode to ensure a constant emission therefrom. As shown, the monitor electrode 17 comprises a probe wire maintained at a potential of 1 to 5 V. The gauge also includes a shield electrode 12 which may alternatively be used as an additional ion collecting electrode. Specific dimensions and operating potentials are given.
GB36210/62A 1961-09-26 1962-09-24 Improvements in magnetron-type ionization gauges Expired GB972344A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140857A US3239715A (en) 1961-09-26 1961-09-26 Electron emission monitor for magnetron-type ionization gauge

Publications (1)

Publication Number Publication Date
GB972344A true GB972344A (en) 1964-10-14

Family

ID=22493109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36210/62A Expired GB972344A (en) 1961-09-26 1962-09-24 Improvements in magnetron-type ionization gauges

Country Status (3)

Country Link
US (1) US3239715A (en)
DE (1) DE1190222B (en)
GB (1) GB972344A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388290A (en) * 1964-04-15 1968-06-11 Wisconsin Alumni Res Found Electron orbiting device including a flat,ribbon-type,thermionic filament
US3378712A (en) * 1966-11-18 1968-04-16 Gen Electric Field emission ionization gauge with restricted line of sight between field emissionanode and ion collector
US3505554A (en) * 1968-01-05 1970-04-07 Sergei Arkadievich Vekshinsky Ionization pressure gauge
US4035720A (en) * 1975-12-31 1977-07-12 Harvey Philip C Ion gauge system
CN106404277A (en) * 2008-09-19 2017-02-15 Mks仪器公司 Ionization gauge with emission current and bias potential control

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334356A (en) * 1941-05-28 1943-11-16 Rca Corp Vacuum gauge
US2595611A (en) * 1947-04-24 1952-05-06 Atomic Energy Commission Ionization gauge
US2605431A (en) * 1950-03-30 1952-07-29 Westinghouse Electric Corp Ionization vacuum gauge
US2790949A (en) * 1954-05-13 1957-04-30 Oscar H Ottinger Thermionic ionization vacuum gauge
US2884550A (en) * 1957-10-17 1959-04-28 Gen Electric Ionization gauges and method of operation thereof
US2961601A (en) * 1957-12-27 1960-11-22 Gen Electric Mean free path vacuum gage
US3058057A (en) * 1960-12-16 1962-10-09 Bell Telephone Labor Inc Ionization manometer circuit

Also Published As

Publication number Publication date
DE1190222B (en) 1965-04-01
US3239715A (en) 1966-03-08

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