GB567441A - Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes - Google Patents

Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes

Info

Publication number
GB567441A
GB567441A GB1180643A GB1180643A GB567441A GB 567441 A GB567441 A GB 567441A GB 1180643 A GB1180643 A GB 1180643A GB 1180643 A GB1180643 A GB 1180643A GB 567441 A GB567441 A GB 567441A
Authority
GB
United Kingdom
Prior art keywords
photo
cathode
electron
discharge devices
electric
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
GB1180643A
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.)
Cinema Television Ltd
Original Assignee
Cinema Television 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 Cinema Television Ltd filed Critical Cinema Television Ltd
Priority to GB1180643A priority Critical patent/GB567441A/en
Publication of GB567441A publication Critical patent/GB567441A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • 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
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/34—Photoemissive electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

567,441. Photo electric cells. CINEMA-TELEVISION, Ltd., and SOMMER, A. July 20, 1943, No. 11806. [Class 39 (i)] In electron discharge devices comprising a photo - electric cathode and one or more secondary electron-emitting electrodes, such as electron multipliers, iconoscopes, image dissectors, &c., the alkali metals used to sensitize the photo-electric cathode and the secondaryemitting electrodes are different. As applied to a multiplier photo-cell, the cathode consists of an antimony-caesium layer, while the secondary emitting electrodes are of silveroxygen-rubidium. In the manufacture of the device, the secondary-emitting electrode is formed prior to the cathode, so that the alkali metal for sensitizing the latter does not deposit on the former. The cathode surface may be formed on the envelope or on a separate support such as silver or mica. After the sensitizing of each electrode, the envelope is baked at a temperature of 150-200‹ C. for 10 minutes.
GB1180643A 1943-07-20 1943-07-20 Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes Expired GB567441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1180643A GB567441A (en) 1943-07-20 1943-07-20 Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1180643A GB567441A (en) 1943-07-20 1943-07-20 Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes

Publications (1)

Publication Number Publication Date
GB567441A true GB567441A (en) 1945-02-14

Family

ID=9993037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1180643A Expired GB567441A (en) 1943-07-20 1943-07-20 Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes

Country Status (1)

Country Link
GB (1) GB567441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9969576B1 (en) 2017-02-22 2018-05-15 Rite-Hite Holding Corporation Inflatable weather barriers for loading docks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9969576B1 (en) 2017-02-22 2018-05-15 Rite-Hite Holding Corporation Inflatable weather barriers for loading docks

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