GB708927A - Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons - Google Patents

Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons

Info

Publication number
GB708927A
GB708927A GB999351A GB999351A GB708927A GB 708927 A GB708927 A GB 708927A GB 999351 A GB999351 A GB 999351A GB 999351 A GB999351 A GB 999351A GB 708927 A GB708927 A GB 708927A
Authority
GB
United Kingdom
Prior art keywords
electrons
orsecondary
electrodes
improvements relating
emitting photo
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
GB999351A
Inventor
Alfred Hermann Sommer
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 GB999351A priority Critical patent/GB708927A/en
Publication of GB708927A publication Critical patent/GB708927A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

In the manufacture of a photo-electric or secondary-electron-emitting electrode, bismuth and gold are deposited by evaporation from an alloy thereof, the deposit being sensitized by exposure to oxygen and an alkali metal. Bismuth and gold in the proportions of 2 to 1 are evaporated in vacuum from a bead of the alloy on to a glass surface. In the construction of a mosaic screen, the metal may be deposited through a mesh, the wires of which are of triangular cross-section, one side of which rests on the screen.
GB999351A 1951-04-28 1951-04-28 Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons Expired GB708927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB999351A GB708927A (en) 1951-04-28 1951-04-28 Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB999351A GB708927A (en) 1951-04-28 1951-04-28 Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons

Publications (1)

Publication Number Publication Date
GB708927A true GB708927A (en) 1954-05-12

Family

ID=9882574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB999351A Expired GB708927A (en) 1951-04-28 1951-04-28 Improvements relating to electrodes which are capable of emitting photo-electrons orsecondary electrons

Country Status (1)

Country Link
GB (1) GB708927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343025A (en) * 1961-06-09 1967-09-19 Bendix Corp Electron multiplier array for image intensifier tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343025A (en) * 1961-06-09 1967-09-19 Bendix Corp Electron multiplier array for image intensifier tubes

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