GB842894A - Electron-emitting surfaces and methods of making them - Google Patents

Electron-emitting surfaces and methods of making them

Info

Publication number
GB842894A
GB842894A GB34562/56A GB3456256A GB842894A GB 842894 A GB842894 A GB 842894A GB 34562/56 A GB34562/56 A GB 34562/56A GB 3456256 A GB3456256 A GB 3456256A GB 842894 A GB842894 A GB 842894A
Authority
GB
United Kingdom
Prior art keywords
antimony
potassium
caesium
deposited
sodium
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
GB34562/56A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB842894A publication Critical patent/GB842894A/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
    • H01J1/34—Photo-emissive cathodes
    • 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
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/34—Photoemissive electrodes
    • H01J2201/342—Cathodes
    • H01J2201/3421—Composition of the emitting surface
    • H01J2201/3426—Alkaline metal compounds, e.g. Na-K-Sb

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
GB34562/56A 1955-12-05 1956-11-12 Electron-emitting surfaces and methods of making them Expired GB842894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US551028A US2914690A (en) 1955-12-05 1955-12-05 Electron-emitting surfaces and methods of making them

Publications (1)

Publication Number Publication Date
GB842894A true GB842894A (en) 1960-07-27

Family

ID=24199537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34562/56A Expired GB842894A (en) 1955-12-05 1956-11-12 Electron-emitting surfaces and methods of making them

Country Status (6)

Country Link
US (1) US2914690A (de)
BE (1) BE553132A (de)
DE (1) DE1269253B (de)
FR (1) FR1168953A (de)
GB (1) GB842894A (de)
NL (2) NL96983C (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020432A (en) * 1959-11-24 1962-02-06 Westinghouse Electric Corp Photoconductive device
US3179835A (en) * 1960-11-22 1965-04-20 Rca Corp Pickup tube having a cesiated photocathode and a substantially leakagefree target, and method of making the same
US3303373A (en) * 1964-01-27 1967-02-07 Westinghouse Electric Corp Target assembly comprising insulating target, field and collector meshes
US3434876A (en) * 1965-11-23 1969-03-25 Rca Corp Photosensitive cathodes
US3372967A (en) * 1966-07-06 1968-03-12 Rca Corp Method of making a multi-alkali cathode
US3498834A (en) * 1967-02-03 1970-03-03 Weston Instruments Inc Photoelectric surfaces and methods for their production
US3535011A (en) * 1968-02-27 1970-10-20 Rca Corp Method of making photoemissive electron tubes
US3658400A (en) * 1970-03-02 1972-04-25 Rca Corp Method of making a multialkali photocathode with improved sensitivity to infrared light and a photocathode made thereby
US3753023A (en) * 1971-12-03 1973-08-14 Rca Corp Electron emissive device incorporating a secondary electron emitting material of antimony activated with potassium and cesium
US4002735A (en) * 1975-06-04 1977-01-11 Rca Corporation Method of sensitizing electron emissive surfaces of antimony base layers with alkali metal vapors
US4568567A (en) * 1984-10-09 1986-02-04 Rca Corporation Method of removing trace quantities of alkali metal impurities from a bialkali-antimonide photoemissive cathode

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522774A (en) * 1939-03-15 1940-06-26 Baird Television Ltd Improvements in or relating to methods of manufacturing secondary emitting electrodes
US2391280A (en) * 1942-11-26 1945-12-18 Bell Telephone Labor Inc Method of forming layers for electronic cathodes
USRE23802E (en) * 1948-11-05 1954-03-16 Photocathode
GB668643A (en) * 1949-06-03 1952-03-19 Emi Ltd Improvements in or relating to circuits embodying cathode potential stabilised picture signal generating tubes
US2747133A (en) * 1950-07-05 1956-05-22 Rca Corp Television pickup tube
BE536298A (de) * 1954-03-08 1900-01-01

Also Published As

Publication number Publication date
BE553132A (de)
US2914690A (en) 1959-11-24
NL212695A (de)
DE1269253B (de) 1968-05-30
NL96983C (de)
FR1168953A (fr) 1958-12-19

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