GB1044957A - Improvements in electric discharge tubes and in electrode assemblies for such tubes - Google Patents

Improvements in electric discharge tubes and in electrode assemblies for such tubes

Info

Publication number
GB1044957A
GB1044957A GB32751/63A GB3275163A GB1044957A GB 1044957 A GB1044957 A GB 1044957A GB 32751/63 A GB32751/63 A GB 32751/63A GB 3275163 A GB3275163 A GB 3275163A GB 1044957 A GB1044957 A GB 1044957A
Authority
GB
United Kingdom
Prior art keywords
grid
cathode
tubes
positive
cell spacing
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
GB32751/63A
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.)
Sperry Corp
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1044957A publication Critical patent/GB1044957A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/38—Control electrodes, e.g. grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes

Landscapes

  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)

Abstract

1,044,957. Velocity-modulated tubes. SPERRY RAND CORPORATION. Aug. 19, 1963 [Aug. 20, 1962], No. 32751/63. Heading H1D. An electrode assembly for the gun of a velocity modulation tube includes a control grid closely spaced from the cathode and formed by an assembly of similar open-ended cells, the distance between the electron-emitting surface of the cathode and the further surface of the grid lies between 0À25 and 0.50 of the cell spacing, and the depth of the grid lies between 0.10 and 0.25 of the cell spacing, whereby the beam may be controlled without the use of positive grid bias, and without undue aberration of the beam. The electron gun of a klystron or travelling wave tube includes cathode 11, grid 12, and an accelerating anode 20, beam current flowing whenever grid 12 receives a positive pulse from modulator 28. The modulator pulses are insufficient to drive the grid positive with respect to the cathode, thereby avoiding grid current effects, the emission of electrons into the beam from areas of the cathode directly beneath the grid elementswhich electrons provide the major contribution to aberration effects-being inhibited by the closeness, and negative bias, of the grid, which is made sufficiently deep to ensure that its surface furthest from the cathode can exercise an adequate control over the beam. The grid cells may be of square or rectangular cross-section; numerical values for the ratios between the grid cell spacing, the grid depth, and the grid/ cathode spacing, are given.
GB32751/63A 1962-08-20 1963-08-19 Improvements in electric discharge tubes and in electrode assemblies for such tubes Expired GB1044957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US217823A US3160782A (en) 1962-08-20 1962-08-20 High-mu negative control grid velocity modulation tube

Publications (1)

Publication Number Publication Date
GB1044957A true GB1044957A (en) 1966-10-05

Family

ID=22812674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32751/63A Expired GB1044957A (en) 1962-08-20 1963-08-19 Improvements in electric discharge tubes and in electrode assemblies for such tubes

Country Status (2)

Country Link
US (1) US3160782A (en)
GB (1) GB1044957A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121234A (en) * 1982-05-12 1983-12-14 Varian Associates High power gridded inductive output linear electron beam tube

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710176A (en) * 1970-05-11 1973-01-09 Gen Electric Electron-optical recording device
US4471267A (en) * 1982-06-14 1984-09-11 Hughes Aircraft Company Grid structure for certain plural mode electron guns
DE3370717D1 (en) * 1983-06-16 1987-05-07 Hughes Aircraft Co Grid structure for certain plural mode electron guns
US5932972A (en) * 1997-02-24 1999-08-03 Litton Systems, Inc. Electron gun for a multiple beam klystron

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2392379A (en) * 1941-11-28 1946-01-08 Sperry Gyroscope Co Inc High frequency electron discharge apparatus
DE849734C (en) * 1942-02-28 1952-09-18 Telefunken Gmbh Vibration generator for very short waves
US2451249A (en) * 1943-03-18 1948-10-12 Rca Corp Electron discharge device for ultra high frequencies
US2825842A (en) * 1952-09-12 1958-03-04 Sperry Rand Corp Electron beam producing and focussing assembly
US3021447A (en) * 1953-02-06 1962-02-13 Varian Associates Electron tube apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121234A (en) * 1982-05-12 1983-12-14 Varian Associates High power gridded inductive output linear electron beam tube

Also Published As

Publication number Publication date
US3160782A (en) 1964-12-08

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