GB842967A - Low noise electron gun - Google Patents

Low noise electron gun

Info

Publication number
GB842967A
GB842967A GB35733/58A GB3573358A GB842967A GB 842967 A GB842967 A GB 842967A GB 35733/58 A GB35733/58 A GB 35733/58A GB 3573358 A GB3573358 A GB 3573358A GB 842967 A GB842967 A GB 842967A
Authority
GB
United Kingdom
Prior art keywords
cathode
gun
electrode
low noise
accelerating
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
GB35733/58A
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.)
Raytheon Co
Original Assignee
Hughes Aircraft 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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of GB842967A publication Critical patent/GB842967A/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
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons
    • 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
    • H01J23/075—Magnetron injection guns
    • 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

Landscapes

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

Abstract

842,967. Velocity-modulated tubes. HUGHES AIRCRAFT CO. Nov. 6, 1958 [Dec 3, 1957], No. 35733/58. Class 39(1). A low noise electron gun, e.g. for travelling wave tubes, backward-wave amplifiers, magnetrons or klystrons, comprises, immersed in a longitudinal magnetic field, a cathode 134, Fig. 7, an accelerating electrode 146 and a beam forming electrode 140 shaped as shown and at a higher positive potential than the accelerating electrode so that electrons emitted from the cathode are constrained to flow through a substantially potential free region towards the accelerating electrode. The electron current density across the emissive surface of the cathode is as shown by curve 148 in Fig. 8. Further accelerating electrodes may be provided. The gun may be designed to produce a cylindrical beam, a sheet beam or an annular beam, Fig. 6, and the beam forming electrode may also have, in the case of a gun producing a cylindrical beam, surfaces 108, 110, Fig. 5, extending parallel to the cathode. Suitable voltages and dimensions are given.
GB35733/58A 1957-12-03 1958-11-06 Low noise electron gun Expired GB842967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US700440A US2914699A (en) 1957-12-03 1957-12-03 Low noise electron gun

Publications (1)

Publication Number Publication Date
GB842967A true GB842967A (en) 1960-08-04

Family

ID=24813513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35733/58A Expired GB842967A (en) 1957-12-03 1958-11-06 Low noise electron gun

Country Status (6)

Country Link
US (1) US2914699A (en)
BE (1) BE572338A (en)
CA (1) CA606402A (en)
CH (1) CH366334A (en)
FR (1) FR1214351A (en)
GB (1) GB842967A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740607A (en) * 1971-06-03 1973-06-19 Watkins Johnson Co Laminar flow electron gun and method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537490A (en) * 1939-12-22 1941-06-24 Standard Telephones Cables Ltd Improvements in or relating to electron discharge apparatus
BE507525A (en) * 1950-12-01
US2758242A (en) * 1951-03-13 1956-08-07 Sperry Rand Corp Travelling wave tubes
BE511284A (en) * 1951-05-11
US2800602A (en) * 1951-06-05 1957-07-23 Univ Leland Stanford Junior Low noise electron discharge tubes
US2797353A (en) * 1951-06-15 1957-06-25 Bell Telephone Labor Inc Traveling wave type electron discharge devices
USRE24794E (en) * 1952-06-12 1960-03-15 quate
US2842703A (en) * 1953-10-05 1958-07-08 Eitel Mccullough Inc Electron gun for beam-type tubes
US2817035A (en) * 1954-04-26 1957-12-17 Hughes Aircraft Co Brillouin flow electron gun
US2806972A (en) * 1954-12-08 1957-09-17 Hughes Aircraft Co Traveling-wave tube

Also Published As

Publication number Publication date
CA606402A (en) 1960-10-04
FR1214351A (en) 1960-04-08
BE572338A (en)
CH366334A (en) 1962-12-31
US2914699A (en) 1959-11-24

Similar Documents

Publication Publication Date Title
GB1039833A (en) Crossed field tube
GB854943A (en) Low noise electron gun
GB984427A (en) Electron discharge devices
GB981743A (en) Improvements in electron guns
GB781205A (en) Improvements in travelling wave tubes
GB715389A (en) Improvements in electron discharge devices
GB1070529A (en) Electron gun
GB842967A (en) Low noise electron gun
JPS6318297B2 (en)
GB804697A (en) Improvements in x-ray tubes
GB676630A (en) Improvements in thermionic valve arrangements
GB794333A (en) Velocity modulated electron tubes
US3214632A (en) Low noise electron gun
US2459072A (en) Beam power tube
US2985789A (en) Low-noise electron gun
GB908590A (en) Charged particle gun
GB962621A (en) Improvements in or relating to electron guns for microwave tubes
US2530859A (en) Ion generators
US2115155A (en) Electron multiplier
US3226595A (en) Low noise electron gun
US3148298A (en) Faraday shield suppressor for secondary emission current in crossed electric and magnetic field electronic tubes
GB814650A (en) Improvements in and relating to positive-ion draining structures in electron discharge devices
GB851626A (en) Improvements in or relating to low noise electron guns
SU139021A1 (en) Microwave electron beam amplifier on a BOV or TWT with feedback
GB1069672A (en) High frequency electron tube apparatus