GB748945A - Improvements in or relating to electron discharge tubes - Google Patents

Improvements in or relating to electron discharge tubes

Info

Publication number
GB748945A
GB748945A GB8392/53A GB839253A GB748945A GB 748945 A GB748945 A GB 748945A GB 8392/53 A GB8392/53 A GB 8392/53A GB 839253 A GB839253 A GB 839253A GB 748945 A GB748945 A GB 748945A
Authority
GB
United Kingdom
Prior art keywords
supported
magnetic
gun
aperture
anode
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
GB8392/53A
Inventor
Arnold Hugh William Beck
Douglas Cecil Rogers
Peter Francis Conway Burke
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB748945A publication Critical patent/GB748945A/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
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • 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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • 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

  • Microwave Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

748,945. Electron beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 26, 1953, No. 8392/53. Addition to 674,758. Class 39 (1). The high-current magnetically-shielded electron gun of the parent Specification is modified to make it suitable for the " Brillouin flow " condition by (a) providing a separate non- magnetic gun anode of smaller diameter than, and supported within, the exit aperture of the magnetic pole-piece or (b) allowing the electrostatic throat of the beam to form slightly beyond (one-tenth to twice the aperture diameter) the exit aperture. In one form the non- magnetic gun anode 44, Fig. 2, is supported within the aperture in the front wall of the polepiece 59 by screws 46. Cathode 41 and focusing electrode 43 are supported on insulating disc 48 bearing against internal shoulder 49 of the pole-piece, which is supported from the envelope by discs 51, 60. Disc 52 supports the tube 31 leading the beam into the utilization space, e.g. the helix of a travelling-wave tube, Fig. 1 (not shown), which may thus be given a different potential by lead 56. In another form, double magnetic shielding is provided by concentric magnetic cylinders 59, 64, Fig. 3, the inner one 64 being supported by the anode 60. Full dimensions are given of an example. The gun may also be used for klystrons.
GB8392/53A 1949-08-12 1953-03-26 Improvements in or relating to electron discharge tubes Expired GB748945A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB290724X 1949-08-12
GB353817X 1953-03-26

Publications (1)

Publication Number Publication Date
GB748945A true GB748945A (en) 1956-05-16

Family

ID=26259724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8392/53A Expired GB748945A (en) 1949-08-12 1953-03-26 Improvements in or relating to electron discharge tubes

Country Status (2)

Country Link
US (1) US2974246A (en)
GB (1) GB748945A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324337A (en) * 1963-12-02 1967-06-06 Varian Associates High frequency electron discharge device and focusing means therefor
US4555646A (en) * 1981-10-07 1985-11-26 Varian Associates, Inc. Adjustable beam permanent-magnet-focused linear-beam microwave tube
US4930774A (en) * 1987-04-06 1990-06-05 Butcher Gary J Baseball pitching training apparatus
US4826164A (en) * 1987-04-06 1989-05-02 Butcher Gary J Baseball pitching training apparatus

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22389E (en) * 1940-07-13 1943-11-02 Electron beam concentrating
DE901325C (en) * 1943-01-15 1954-01-11 Siemens Ag Magnetostatic pole piece lens
NL155290B (en) * 1949-08-12 Carlisle Chemical Works PROCESS FOR THE PREPARATION OF AN ORGANOTIN COMPOSITION FOR THE STABILIZATION AND INTERNAL LUBRICATION OF POLYVINYL CHLORIDE RESINS.
US2687490A (en) * 1949-09-22 1954-08-24 Sperry Corp High-frequency beam tube device
NL89376C (en) * 1950-06-17
US2679613A (en) * 1950-08-19 1954-05-25 Westinghouse Electric Corp One-cavity resnatron
US2727180A (en) * 1950-09-20 1955-12-13 Westinghouse Electric Corp Microwave reactance tube
US2803782A (en) * 1950-09-22 1957-08-20 Philips Corp Triode thermionic tube
US2637000A (en) * 1951-02-15 1953-04-28 Magnetic electron -lens
US2752523A (en) * 1951-05-15 1956-06-26 Int Standard Electric Corp Electron discharge apparatus
US2619611A (en) * 1951-05-29 1952-11-25 Eitel Mccullough Inc Electron tube apparatus
USRE24794E (en) * 1952-06-12 1960-03-15 quate
NL182200B (en) * 1952-10-25 Rustenburg Platinum Mines Ltd PROCESS FOR THE PREPARATION OF A MEDICINAL PRODUCT FOR THE TREATMENT OF CANCER BASED ON A PLATINACO INATION COMPOUND AND PROCEDURE FOR PREPARING THE ACTIVE COMPOUND.
US2879440A (en) * 1953-07-27 1959-03-24 Varian Associates High frequency tube

Also Published As

Publication number Publication date
US2974246A (en) 1961-03-07

Similar Documents

Publication Publication Date Title
GB698005A (en) Improvements in or relating to electron discharge devices
GB642083A (en) Improvements relating to cathode ray tubes
GB802960A (en) Image tube
GB828224A (en) High-compression beam generating system for velocity-modulated tubes
GB748945A (en) Improvements in or relating to electron discharge tubes
GB469455A (en) Improvements in or relating to cathode ray tubes
GB1013622A (en) Improvements in electron-beam tubes and electron guns for use therein
US2596508A (en) Electron gun for cathode-ray tubes
US3408526A (en) Ion source having an annular permanent magnet
GB592488A (en) Electrode structures
GB551665A (en) Improvements in cathode ray tubes
GB729611A (en) Improvements in or relating to electron discharge devices
GB707064A (en) Improvements relating to electrode assemblies for cathode ray tubes
GB728900A (en) Improvements in or relating to electron gun structures for use in cathode ray tubes
GB521563A (en) Apparatus for starting an electric spark
GB714718A (en) Improvements in or relating to cathode-ray apparatus
GB864272A (en) Electron gun
GB469418A (en) Improvements in or relating to cathode ray tubes
GB442724A (en) Braun tube
GB461450A (en) Improvements in or relating to electric discharge devices
GB603088A (en) Improvements in electrical discharge tubes
GB548147A (en) Improvements in or relating to cathode ray tubes
GB754605A (en) Improvements in or relating to circuit arrangements comprising cathode-ray tubes
GB481549A (en) Cathode ray discharge devices
US2113334A (en) X-ray tube