GB683474A - Electron optical system for cathodes of electron beam tubes - Google Patents

Electron optical system for cathodes of electron beam tubes

Info

Publication number
GB683474A
GB683474A GB24934/49A GB2493449A GB683474A GB 683474 A GB683474 A GB 683474A GB 24934/49 A GB24934/49 A GB 24934/49A GB 2493449 A GB2493449 A GB 2493449A GB 683474 A GB683474 A GB 683474A
Authority
GB
United Kingdom
Prior art keywords
cathode
electrodes
electrode
space
electron
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
GB24934/49A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB683474A publication Critical patent/GB683474A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/42—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field
    • H01J25/44—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/42—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field

Abstract

683,474. Discharge apparatus. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Sept. 28, 1949 (Oct. 18, 1948], No. 24934/49. Class 39(i) An electron discharge tube wherein an electron beam emitted by a cylindrical cathode C perpendicular to the beam direction is projected into the space between a pair of electrodes, between which is applied a potential difference which sets up in the space an electric field perpendicular to the cathode and to the beam, is characterised by the combination with the cathode of an electronic optical system comprising an anode A which partly surrounds the cathode concentrically and which is completed by a system of two electrodes, one of which C<SP>1</SP> is at the potential of the__cathode and the other b, c connected to the anode, the space between the two electrodes being in direct communication with the inlet end of the space through which the beam passes. Fig. 6 shows the invention applied to a travelling wave tube in which the beam passes between a helix H and an electrode Z negative to the cathode, the electrode C<SP>1</SP> being so positioned that the electric field between electrodes H and Z is not disturbed by it. A magnetic field is provided perpendicular to the plane of the drawing. If the electrode Z is at cathode potential it may be made integral with the electrode C<SP>1</SP>, Fig. 4 (not shown); the electrodes of this arrangement may be bent round in a circle to form a magnetron type of arrangement, Fig. 5 (not shown). The cathode may be of metal or may be oxide coated, and may be in the form of a filament or in the form of a helix wound on a cylinder.
GB24934/49A 1948-10-18 1949-09-28 Electron optical system for cathodes of electron beam tubes Expired GB683474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR855285X 1948-10-18

Publications (1)

Publication Number Publication Date
GB683474A true GB683474A (en) 1952-11-26

Family

ID=9328180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24934/49A Expired GB683474A (en) 1948-10-18 1949-09-28 Electron optical system for cathodes of electron beam tubes

Country Status (5)

Country Link
US (1) US2607904A (en)
CH (1) CH285600A (en)
DE (1) DE855285C (en)
FR (1) FR976786A (en)
GB (1) GB683474A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701322A (en) * 1949-02-12 1955-02-01 Csf Traveling-wave amplifying tube of the transverse magnetic field type
US2761088A (en) * 1949-02-22 1956-08-28 Csf Travelling-wave amplifying tube
FR986811A (en) * 1949-03-21 1951-08-06 Csf Electron gun for transverse magnetic field wave propagation tubes
FR993102A (en) * 1949-06-02 1951-10-26 Csf Traveling wave tube with two electron beams propagating in the opposite direction
US2745983A (en) * 1949-06-10 1956-05-15 Csf Traveling wave tube
US2770754A (en) * 1950-01-20 1956-11-13 Csf Transverse field travelling wave tube
FR1014309A (en) * 1950-03-13 1952-08-13 Csf Crossed electric and magnetic field wave propagating tube with an electron beam propagating in the transverse direction of the tube
FR1023290A (en) * 1950-08-12 1953-03-16 Csf Improvements to electron beam focusing devices
FR1034831A (en) * 1951-03-29 1953-08-03 Csf Large gain transverse magnetic field wave propagation tube
FR1037956A (en) * 1951-05-31 1953-09-24 Csf Electron gun for cross electric and magnetic field discharge tube
BE521710A (en) * 1952-07-25
US2804569A (en) * 1952-12-24 1957-08-27 Csf Space-charge wave detector tubes
US2794936A (en) * 1952-12-24 1957-06-04 Csf Space-charge wave tubes
FR1075058A (en) * 1953-02-26 1954-10-12 Csf Improvements to traveling wave tubes, crossed electric and magnetic chamips, circular structure
US3027483A (en) * 1953-05-27 1962-03-27 Raytheon Co Electron discharge devices
US2888609A (en) * 1953-09-24 1959-05-26 Raytheon Mfg Co Electronic devices
US2844797A (en) * 1953-10-23 1958-07-22 Raytheon Mfg Co Traveling wave electron discharge devices
US2888610A (en) * 1953-12-16 1959-05-26 Raytheon Mfg Co Traveling wave tubes
FR1100854A (en) * 1954-03-04 1955-09-26 Csf Improvements to traveling wave tubes with crossed electric and magnetic fields
FR1105591A (en) * 1954-05-29 1955-12-05 Csf Delay lines for high power discharge tubes
US2849650A (en) * 1955-06-10 1958-08-26 Bell Telephone Labor Inc High frequency apparatus
US3084279A (en) * 1960-02-10 1963-04-02 Raytheon Co Travelling wave devices

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR748582A (en) * 1932-01-21 1933-07-06 M O Valve Co Ltd Improvements to short wave electric generators, called magnetrons
US2414121A (en) * 1941-01-17 1947-01-14 Bell Telephone Labor Inc Electron device of the magnetron type
US2475646A (en) * 1945-02-22 1949-07-12 Raytheon Mfg Co Electron discharge device of the magnetron type
FR57746E (en) * 1947-01-09 1953-05-05
US2531972A (en) * 1949-02-12 1950-11-28 Csf Ultra short wave transmitting tube

Also Published As

Publication number Publication date
FR976786A (en) 1951-03-22
US2607904A (en) 1952-08-19
DE855285C (en) 1952-11-10
CH285600A (en) 1952-09-15

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