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CA977077A - Gridded electron gun employing a concave cathode emitter - Google Patents

Gridded electron gun employing a concave cathode emitter

Info

Publication number
CA977077A
CA977077A CA181,444A CA181444A CA977077A CA 977077 A CA977077 A CA 977077A CA 181444 A CA181444 A CA 181444A CA 977077 A CA977077 A CA 977077A
Authority
CA
Canada
Prior art keywords
electron gun
cathode emitter
gun employing
concave cathode
gridded electron
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
CA181,444A
Other versions
CA181444S (en
Inventor
George V. Miram
Gordon T. Hunter
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Application granted granted Critical
Publication of CA977077A publication Critical patent/CA977077A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
CA181,444A 1972-09-28 1973-09-19 Gridded electron gun employing a concave cathode emitter Expired CA977077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29320572A 1972-09-28 1972-09-28

Publications (1)

Publication Number Publication Date
CA977077A true CA977077A (en) 1975-10-28

Family

ID=23128137

Family Applications (1)

Application Number Title Priority Date Filing Date
CA181,444A Expired CA977077A (en) 1972-09-28 1973-09-19 Gridded electron gun employing a concave cathode emitter

Country Status (5)

Country Link
CA (1) CA977077A (en)
DE (1) DE2348617C2 (en)
FR (1) FR2201535B1 (en)
GB (1) GB1400668A (en)
IL (1) IL43254A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535724A1 (en) * 1975-08-09 1977-02-17 Licentia Gmbh Cathode ray tube with axis symmetrical cathode - has shadow grid close to cathode which has circular ridges on its surface
FR2496290A1 (en) * 1980-12-12 1982-06-18 Efcis DIGITAL RELAY CIRCUIT BASED ON FREQUENCY
FR2775118B1 (en) * 1998-02-13 2000-05-05 Thomson Tubes Electroniques GRID FOR ELECTRONIC TUBE WITH AXIAL BEAM WITH IMPROVED PERFORMANCE

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295680A (en) * 1940-10-25 1942-09-15 Westinghouse Electric & Mfg Co Ultra high frequency device with conical collector
US2967260A (en) * 1957-05-31 1961-01-03 Eitel Mccullough Inc Electron tube
US3107313A (en) * 1959-10-30 1963-10-15 Johann R Hechtel Velocity modulated electron tube with cathode means providing plural electron streams
US3500110A (en) * 1967-08-23 1970-03-10 Raytheon Co Noncurrent intercepting electron beam control element
FR1582070A (en) * 1968-04-26 1969-09-26
US3558967A (en) * 1969-06-16 1971-01-26 Varian Associates Linear beam tube with plural cathode beamlets providing a convergent electron stream
DE2210160C3 (en) * 1972-03-02 1975-04-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electron gun system for time-of-flight tubes

Also Published As

Publication number Publication date
DE2348617C2 (en) 1984-09-27
DE2348617A1 (en) 1974-04-04
IL43254A0 (en) 1973-11-28
FR2201535A1 (en) 1974-04-26
FR2201535B1 (en) 1977-08-19
IL43254A (en) 1976-02-29
GB1400668A (en) 1975-07-23

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