GB974300A - Improvements in or relating to secondary electron emitting targets - Google Patents

Improvements in or relating to secondary electron emitting targets

Info

Publication number
GB974300A
GB974300A GB4323259A GB4323259A GB974300A GB 974300 A GB974300 A GB 974300A GB 4323259 A GB4323259 A GB 4323259A GB 4323259 A GB4323259 A GB 4323259A GB 974300 A GB974300 A GB 974300A
Authority
GB
United Kingdom
Prior art keywords
layer
thick
relating
secondary electron
dec
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
GB4323259A
Inventor
David John Gibbons
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB4323259A priority Critical patent/GB974300A/en
Publication of GB974300A publication Critical patent/GB974300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/32—Secondary-electron-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

974,300. Electrode materials. ELECTRIC & MUSICAL INDUSTRIES Ltd. Dec. 16, 1960 [Dec. 19, 1959], No. 43232/59. Heading H1D. A secondary-electron-emissive electrode for an electron multiplier or image intensifier tube comprises an insulating layer exhibiting the property of bombardment-induced-conductivity and having a thickness in the range 200 to 2000 Š, provided on one side with a layer of aluminium, beryllium or magnesium, and on the other side with a layer of secondary-electronemissive material, e.g. potassium chloride or barium fluoride. Preferably a layer of aluminium oxide, 500 Š thick, formed by anodizing an aluminium foil, is attached to a glass frame and is coated, by evaporation in vacuum, with a layer of Al, 100 Š thick, and a layer of potassium chloride, 500 Š thick.
GB4323259A 1959-12-19 1959-12-19 Improvements in or relating to secondary electron emitting targets Expired GB974300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4323259A GB974300A (en) 1959-12-19 1959-12-19 Improvements in or relating to secondary electron emitting targets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4323259A GB974300A (en) 1959-12-19 1959-12-19 Improvements in or relating to secondary electron emitting targets

Publications (1)

Publication Number Publication Date
GB974300A true GB974300A (en) 1964-11-04

Family

ID=10427841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4323259A Expired GB974300A (en) 1959-12-19 1959-12-19 Improvements in or relating to secondary electron emitting targets

Country Status (1)

Country Link
GB (1) GB974300A (en)

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