GB539422A - Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type - Google Patents

Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type

Info

Publication number
GB539422A
GB539422A GB2297/40A GB229740A GB539422A GB 539422 A GB539422 A GB 539422A GB 2297/40 A GB2297/40 A GB 2297/40A GB 229740 A GB229740 A GB 229740A GB 539422 A GB539422 A GB 539422A
Authority
GB
United Kingdom
Prior art keywords
arrangments
electrons
relating
discharge apparatus
modulation type
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
GB2297/40A
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
Priority to GB2297/40A priority Critical patent/GB539422A/en
Priority to US369518A priority patent/US2306875A/en
Publication of GB539422A publication Critical patent/GB539422A/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
    • H01J25/02—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

Landscapes

  • Particle Accelerators (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

539,422. Electron oscillators. STANDARD TELEPHONES & CABLES, Ltd., and FREMLIN, J. H. Feb. 6, 1940, No. 2297. [Class 39 (i)] An electron beam is concentrated in a discharge device such as the velocity modulated oscillator described in Specification 537,490-by a magnetic field the lines of which converge from a large surface cathode C in the direction of travel of the beam. As shown an accelerating grid G is used with resonators Rl, R2. The field may diverge at a point beyond the second resonator ; axial permanent magnets or axial coils may be used to increase the first convergence and the subsequent divergence. The pole of the magnet behind the cathode may be annular and a small permanent magnet inserted in the opening. With a flat beam slotted poles may be used.
GB2297/40A 1940-02-06 1940-02-06 Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type Expired GB539422A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2297/40A GB539422A (en) 1940-02-06 1940-02-06 Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type
US369518A US2306875A (en) 1940-02-06 1940-12-11 Electron discharge apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2297/40A GB539422A (en) 1940-02-06 1940-02-06 Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type

Publications (1)

Publication Number Publication Date
GB539422A true GB539422A (en) 1941-09-10

Family

ID=9737084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2297/40A Expired GB539422A (en) 1940-02-06 1940-02-06 Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type

Country Status (2)

Country Link
US (1) US2306875A (en)
GB (1) GB539422A (en)

Families Citing this family (111)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486398A (en) * 1943-05-29 1949-11-01 Sperry Corp Velocity modulation device and method
US2539210A (en) * 1946-01-12 1951-01-23 Westinghouse Electric Corp Electronic tube apparatus embodying a cavity resonator
US2447804A (en) * 1947-08-14 1948-08-24 Paul F G Holst Electron beam focusing circuit
GB664813A (en) * 1947-08-29 1952-01-16 Emi Ltd Improvements relating to apparatus embodying electron discharge tubes
US2651000A (en) * 1949-11-22 1953-09-01 Rca Corp Reflex velocity modulated discharge device
US2718606A (en) * 1952-08-02 1955-09-20 Gen Electric Combination electromagnet-permanent magnet focusing devices
DE1071237B (en) * 1953-04-29
NL207373A (en) * 1953-05-30
GB822166A (en) * 1954-09-20 1959-10-21 Julius Cato Vredenburg Inglesb Cathode ray image producing system and apparatus
US2936394A (en) * 1955-07-18 1960-05-10 Hughes Aircraft Co Electron gun
US2945153A (en) * 1956-08-31 1960-07-12 Rca Corp Electron beam tube
US2942144A (en) * 1957-02-12 1960-06-21 Sylvania Electric Prod Wave generator
US2939028A (en) * 1957-11-13 1960-05-31 Gen Electric Electron gun for a cylindrical capacitor
US3011086A (en) * 1957-11-29 1961-11-28 Applied Radiation Corp Means for selecting electron beam energy
US2909691A (en) * 1958-10-17 1959-10-20 Heil Oskar Electron guns with magnetic focusing
US3046439A (en) * 1960-04-29 1962-07-24 Gen Electric Field emisssion reflex klystron
US3108222A (en) * 1960-08-30 1963-10-22 Polarad Electronics Corp Spectrum analyzer employing velocity modulation
US3315110A (en) * 1963-08-12 1967-04-18 Sperry Rand Corp Shaped-field hollow beam electron gun having high beam perveance and high beam convergence ratio
US3450930A (en) * 1966-11-14 1969-06-17 Varian Associates Permanent magnet focused linear beam tube employing a compensating magnet structure between the main magnet and the beam collector
DE2333441C3 (en) * 1973-06-30 1975-12-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Lauffeldtube
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