GB715389A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB715389A
GB715389A GB1836651A GB1836651A GB715389A GB 715389 A GB715389 A GB 715389A GB 1836651 A GB1836651 A GB 1836651A GB 1836651 A GB1836651 A GB 1836651A GB 715389 A GB715389 A GB 715389A
Authority
GB
United Kingdom
Prior art keywords
cathode
potential
electrodes
electrode
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
GB1836651A
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
Priority to FR880461X priority Critical
Application filed by CSF Compagnie Generale de Telegraphie Sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie Sans Fil SA
Publication of GB715389A publication Critical patent/GB715389A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02Electrodes; Magnetic control means; Screens
    • H01J23/06Electron or ion guns
    • H01J23/075Magnetron injection guns

Abstract

715,389. Magnetron amplifiers. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 2, 1951 [Aug. 12, 1950], No. 18366/51. Class 39(1) In travelling wave amplifiers in which an electron beam gives up energy to a wave travelling along a delay line in a region of crossed electric and magnetic fields, the emission from the cathode of the gun is space charge limited and the profile and potential of the focusing and accelerating electrodes are such that the potential at the beam edges and the potential gradient at the beam edges normal to the edges is the same as it would be in a beam of infinite cross-section. The potentials of the focusing and accelerating electrodes lie within the range cathode potential to the potential of the most positive electrode in the crossed field region, and increase with increased distance of the electrodes from the cathode. The shape of the electrodes which are of non-magnetic material may be found by calculation or by electrolytic tank experiments. In one form, Fig. 2, the gun has cathode 21, Wehnelt electrode 22 making an angle of 67.5 degrees with the beam and profiled focusing and accelerating electrodes 23, 24, 27, 28. In Fig. 3 (not shown), electrode 27 is a filter type circuit having a plurality of cavity resonators and with end slots for input and output couplings, and electrode 31 is supported by a flat insulator from the tube wall. In a modification, Fig. 5, the crossed field travelling wave tube is bent into circular form, and has cathode 3, Wehnelt control electrode 10, I profiled accelerating and focusing electrodes 18, 19, 20, and delay line 9. The electron flow is controlled by varying the potential of the cathode or of an 'auxiliary electrode'. It is stated that the space charge limited beams have reduced shot noise as compared for example with known tubes with saturated or unsaturated emission.
GB1836651A 1950-08-12 1951-08-02 Improvements in electron discharge devices Expired GB715389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR880461X 1950-08-12

Publications (1)

Publication Number Publication Date
GB715389A true GB715389A (en) 1954-09-15

Family

ID=9365072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1836651A Expired GB715389A (en) 1950-08-12 1951-08-02 Improvements in electron discharge devices

Country Status (4)

Country Link
US (1) US2807739A (en)
DE (1) DE880461C (en)
FR (1) FR1023290A (en)
GB (1) GB715389A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939034A (en) * 1955-06-10 1960-05-31 Bell Telephone Labor Inc Electron gun for slalom focusing systems
US2871394A (en) * 1955-11-28 1959-01-27 Raytheon Mfg Co Electron discharge devices and cathodes therefor
GB824728A (en) * 1956-06-22 1959-12-02 Csf Improvements relating to ion sources
US2953707A (en) * 1957-03-29 1960-09-20 Bell Telephone Labor Inc Electron beam focusing system
US3167684A (en) * 1960-01-20 1965-01-26 Johann R Hechtel Klystron tubes
GB958529A (en) * 1961-06-20 1964-05-21 M O Valve Co Ltd Improvements in or relating to electron tubes
GB983640A (en) * 1962-01-16 1965-02-17 M O Valve Co Ltd Improvements in or relating to electron guns
DE1491461A1 (en) * 1965-07-15 1969-05-14 Siemens Ag System for generating a flat electron beam for a running field tube with purely electrostatic focusing
US4021697A (en) * 1975-12-10 1977-05-03 Warnecke Electron Tubes, Inc. Crossed-field amplifier

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883938C (en) * 1939-12-02 Western Electric Co Electron discharge device
US2530373A (en) * 1943-05-04 1950-11-21 Bell Telephone Labor Inc Ultra high frequency electronic device
NL88043C (en) * 1947-01-09
FR976786A (en) * 1948-10-18 1951-03-22 Csf Electronic optics system for electron beam tube cathodes
US2531972A (en) * 1949-02-12 1950-11-28 Csf Ultra short wave transmitting tube
FR986811A (en) * 1949-03-21 1951-08-06 Csf Electron gun for transverse magnetic field wave propagation tubes
FR994545A (en) * 1949-07-07 1951-11-19 Csf Electronic optical system for a beam propagating perpendicular to the crossed magnetic and electric fields
US2567674A (en) * 1949-11-08 1951-09-11 Rca Corp Velocity modulated electron discharge device

Also Published As

Publication number Publication date
US2807739A (en) 1957-09-24
FR1023290A (en) 1953-03-16
DE880461C (en) 1953-06-22

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