GB469899A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB469899A
GB469899A GB327536A GB327536A GB469899A GB 469899 A GB469899 A GB 469899A GB 327536 A GB327536 A GB 327536A GB 327536 A GB327536 A GB 327536A GB 469899 A GB469899 A GB 469899A
Authority
GB
United Kingdom
Prior art keywords
electrodes
caesium
coated
relating
emitting
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
GB327536A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB327636A priority Critical patent/GB469900A/en
Priority to GB327536A priority patent/GB469899A/en
Priority to FR817161D priority patent/FR817161A/en
Publication of GB469899A publication Critical patent/GB469899A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04Electron multipliers
    • H01J43/06Electrode arrangements
    • H01J43/18Electrode arrangements using essentially more than one dynode
    • H01J43/20Dynodes consisting of sheet material, e.g. plane, bent

Landscapes

  • Particle Accelerators (AREA)
  • X-Ray Techniques (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

469,899. Electron multipliers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BRETT, G. F. Feb: 3, 1936, No. 3275. [Class 39 (i)] A multiplier comprises a gun, a secondary-emitting target, and additional electrodes, surrounding the beam, which are also secondary-emitting, with the exception of that which serves as the output electrode. In one form the gun comprises a photo-electric or thermionic cathode 1, a control electrode 2 and an accelerating anode 3, and a circular or ribbon-shaped beam is projected onto a first target 4. The secondary beams travel to cylindrical electrodes 7, 6 and output electrode 5. The electrodes 4, 7, 6 may be caesium coated, and the electrodes 7, 6, 5, in that order, may have decreasing diameters. The electrodes 7, 6 may be coated on their outer as well as their inner faces with caesium so that both faces are used.
GB327536A 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices Expired GB469899A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB327636A GB469900A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices
GB327536A GB469899A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices
FR817161D FR817161A (en) 1936-02-03 1937-02-01 Improvements to electronic discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB327536A GB469899A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB469899A true GB469899A (en) 1937-08-03

Family

ID=9755251

Family Applications (2)

Application Number Title Priority Date Filing Date
GB327536A Expired GB469899A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices
GB327636A Expired GB469900A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB327636A Expired GB469900A (en) 1936-02-03 1936-02-03 Improvements in or relating to electron discharge devices

Country Status (2)

Country Link
FR (1) FR817161A (en)
GB (2) GB469899A (en)

Also Published As

Publication number Publication date
GB469900A (en) 1937-08-03
FR817161A (en) 1937-08-27

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