GB1422311A - Gridded convergent flow electron gun - Google Patents

Gridded convergent flow electron gun

Info

Publication number
GB1422311A
GB1422311A GB3903873A GB3903873A GB1422311A GB 1422311 A GB1422311 A GB 1422311A GB 3903873 A GB3903873 A GB 3903873A GB 3903873 A GB3903873 A GB 3903873A GB 1422311 A GB1422311 A GB 1422311A
Authority
GB
United Kingdom
Prior art keywords
grid
cathode
emitter
shadow
focusing
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
GB3903873A
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 GB1422311A publication Critical patent/GB1422311A/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
    • H01J3/026—Eliminating deleterious effects due to thermal effects, electric or magnetic field
    • 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
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam

Landscapes

  • Microwave Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
GB3903873A 1972-08-24 1973-08-17 Gridded convergent flow electron gun Expired GB1422311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28343272A 1972-08-24 1972-08-24

Publications (1)

Publication Number Publication Date
GB1422311A true GB1422311A (en) 1976-01-28

Family

ID=23086036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3903873A Expired GB1422311A (en) 1972-08-24 1973-08-17 Gridded convergent flow electron gun

Country Status (5)

Country Link
JP (1) JPS49134263A (enrdf_load_stackoverflow)
CA (1) CA975474A (enrdf_load_stackoverflow)
FR (1) FR2197226B1 (enrdf_load_stackoverflow)
GB (1) GB1422311A (enrdf_load_stackoverflow)
IL (1) IL42916A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967150A (en) * 1975-01-31 1976-06-29 Varian Associates Grid controlled electron source and method of making same

Also Published As

Publication number Publication date
FR2197226A1 (enrdf_load_stackoverflow) 1974-03-22
JPS49134263A (enrdf_load_stackoverflow) 1974-12-24
CA975474A (en) 1975-09-30
FR2197226B1 (enrdf_load_stackoverflow) 1976-11-19
IL42916A0 (en) 1973-11-28
IL42916A (en) 1976-02-29

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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
PCNP Patent ceased through non-payment of renewal fee