GB527996A - Improvements in or relating to electron multiplier tubes - Google Patents

Improvements in or relating to electron multiplier tubes

Info

Publication number
GB527996A
GB527996A GB12426/39A GB1242639A GB527996A GB 527996 A GB527996 A GB 527996A GB 12426/39 A GB12426/39 A GB 12426/39A GB 1242639 A GB1242639 A GB 1242639A GB 527996 A GB527996 A GB 527996A
Authority
GB
United Kingdom
Prior art keywords
electrodes
cathode
axis
cathode surface
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
GB12426/39A
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.)
JANN ALEKSANDER RAJCHMAN
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
JANN ALEKSANDER RAJCHMAN
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 JANN ALEKSANDER RAJCHMAN, Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical JANN ALEKSANDER RAJCHMAN
Publication of GB527996A publication Critical patent/GB527996A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/20—Dynodes consisting of sheet material, e.g. plane, bent

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

527,996. Electron multipliers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 25, 1939, No. 12426. Convention date, May 3, 1938. [Class 39 (i)] The secondary-electron-emitting electrodes are arranged alternately on opposite sides of an axis which is adjacent to the cathode and anode at its opposite ends, the curved cathode surface having an area which is at least twice that of one of the secondary-emitting surfaces and the generatrix of the cathode surface being normal to a plane containing the axis. In the form shown, the photo-electric cathode C is provided with a metal box S which prevents the electrons from being affected by wall charges. Secondary electrodes 1M ... 9M, formed with curved and straight portions, are arranged on opposite sides of the axis A-A and are connected to a potentiometer PR. The first secondary-emitting electrode 1M has an emissive area substantially greater than the succeeding secondary electrodes. An output impedance Z is connected between the anode B and the potentiometer PR and light from a source L is modulated and diffused over the cathode surface by a lens O. The Specification contains numerical data enabling the form of the electrodes to be calculated.
GB12426/39A 1938-05-03 1939-04-25 Improvements in or relating to electron multiplier tubes Expired GB527996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205672A US2198227A (en) 1938-05-03 1938-05-03 Electron multiplier

Publications (1)

Publication Number Publication Date
GB527996A true GB527996A (en) 1940-10-21

Family

ID=22763166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12426/39A Expired GB527996A (en) 1938-05-03 1939-04-25 Improvements in or relating to electron multiplier tubes

Country Status (2)

Country Link
US (1) US2198227A (en)
GB (1) GB527996A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553197A (en) * 1941-06-25 1951-05-15 Hartford Nat Bank & Trust Co Photoelectric tube
BE633901A (en) * 1962-06-26

Also Published As

Publication number Publication date
US2198227A (en) 1940-04-23

Similar Documents

Publication Publication Date Title
GB495843A (en) Electron multipliers
GB543595A (en) Improvements in or relating to cathodes for electron discharge devices
GB441250A (en) Improvements in and relating to oxide coated cathodes for gaseous electric discharge devices
GB527996A (en) Improvements in or relating to electron multiplier tubes
GB745811A (en) Improvements relating to electron multipliers
GB498843A (en) Improvements in or relating to electron multiplier discharge devices
GB708276A (en) Improvements in velocity modulation tubes of the kind comprising a drift space
GB496556A (en) Improvements in electrodes for electron discharge devices
GB520117A (en) Improvements in or relating to electron multipliers
GB469897A (en) Improvements in or relating to cathode ray tubes
GB481012A (en) Improvements in and relating to devices utilising secondary electron emission
GB629881A (en) Improvements in electric discharge tubes comprising secondary emission electrodes
GB1403936A (en) Electron guns for use in cathode ray tubes
GB470026A (en) Improvements in or relating to electron discharge devices
GB514335A (en) Improvements in or relating to electron multipliers
GB519111A (en) Improvements in and relating to cathode ray tubes
GB490761A (en) Improvements in or relating to electron multiplying devices
GB471672A (en) Improvements in or relating to electron discharge devices
GB499649A (en) Improvements in or relating to electron multipliers
GB518553A (en) Improvements in electron multipliers
GB485111A (en) Improvements in or relating to cathode-ray tubes
GB498566A (en) Improvements in electron multipliers
GB486888A (en) Improvements in or relating to electron discharge devices
GB478001A (en) Improvements in or relating to electron discharge devices
GB483826A (en) Improvements in or relating to electron discharge devices