GB1400668A - Gridded electron gun apparatus employing a concave cathode emitter - Google Patents

Gridded electron gun apparatus employing a concave cathode emitter

Info

Publication number
GB1400668A
GB1400668A GB4507173A GB4507173A GB1400668A GB 1400668 A GB1400668 A GB 1400668A GB 4507173 A GB4507173 A GB 4507173A GB 4507173 A GB4507173 A GB 4507173A GB 1400668 A GB1400668 A GB 1400668A
Authority
GB
United Kingdom
Prior art keywords
cathode
grid
concave
anode
electron gun
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
GB4507173A
Other languages
English (en)
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
Publication of GB1400668A publication Critical patent/GB1400668A/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

Landscapes

  • Microwave Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
GB4507173A 1972-09-28 1973-09-26 Gridded electron gun apparatus employing a concave cathode emitter Expired GB1400668A (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
GB1400668A true GB1400668A (en) 1975-07-23

Family

ID=23128137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4507173A Expired GB1400668A (en) 1972-09-28 1973-09-26 Gridded electron gun apparatus employing a concave cathode emitter

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535724A1 (de) * 1975-08-09 1977-02-17 Licentia Gmbh Elektronenstrahlroehre

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496290A1 (fr) * 1980-12-12 1982-06-18 Efcis Circuit d'asservissement numerique en fonction de la frequence
FR2775118B1 (fr) * 1998-02-13 2000-05-05 Thomson Tubes Electroniques Grille pour tube electronique a faisceau axial a performances ameliorees

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 (enExample) * 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 (de) * 1972-03-02 1975-04-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektronenstrahlerzeugersystem für Laufzeitröhren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535724A1 (de) * 1975-08-09 1977-02-17 Licentia Gmbh Elektronenstrahlroehre

Also Published As

Publication number Publication date
FR2201535B1 (enExample) 1977-08-19
FR2201535A1 (enExample) 1974-04-26
IL43254A0 (en) 1973-11-28
IL43254A (en) 1976-02-29
DE2348617C2 (de) 1984-09-27
DE2348617A1 (de) 1974-04-04
CA977077A (en) 1975-10-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years

Effective date: 19930925