GB1442405A - Manufacture of electron-emissive layers - Google Patents

Manufacture of electron-emissive layers

Info

Publication number
GB1442405A
GB1442405A GB5214373A GB5214373A GB1442405A GB 1442405 A GB1442405 A GB 1442405A GB 5214373 A GB5214373 A GB 5214373A GB 5214373 A GB5214373 A GB 5214373A GB 1442405 A GB1442405 A GB 1442405A
Authority
GB
United Kingdom
Prior art keywords
electron
manufacture
photosensitivity
exposure
emissive layers
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
GB5214373A
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
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 filed Critical RCA Corp
Publication of GB1442405A publication Critical patent/GB1442405A/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
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

1442405 Photocathodes RCA CORPORATION 9 Nov 1973 [11 Dec 1972] 52143/73 Heading H1D A photocathode is formed by exposing a Sb layer successively to Cs, K and Na vapour, the exposure to Cs being stopped before the photosensitivity reaches a peak, preferably at a very low value. The layer is maintained at 240‹ C. and exposure to K and Na is stopped when the photosensitivity reach a maximum in each case. The process is carried out in a photomultiplier tube containing sources of Cs, K and Na. The tube is initially baked at 300‹ C. and evacuated to remove impurities. The cathode may be secondary emissive.
GB5214373A 1972-12-11 1973-11-09 Manufacture of electron-emissive layers Expired GB1442405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31400172A 1972-12-11 1972-12-11

Publications (1)

Publication Number Publication Date
GB1442405A true GB1442405A (en) 1976-07-14

Family

ID=23218104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5214373A Expired GB1442405A (en) 1972-12-11 1973-11-09 Manufacture of electron-emissive layers

Country Status (5)

Country Link
JP (1) JPS4990483A (en)
DE (1) DE2361113A1 (en)
FR (1) FR2210010B1 (en)
GB (1) GB1442405A (en)
NL (1) NL7316865A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL183914C (en) * 1979-02-02 1989-02-16 Optische Ind De Oude Delft Nv ROENTGEN IMAGE AMPLIFIER.

Also Published As

Publication number Publication date
JPS4990483A (en) 1974-08-29
FR2210010B1 (en) 1977-06-10
NL7316865A (en) 1974-06-13
FR2210010A1 (en) 1974-07-05
DE2361113A1 (en) 1974-06-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee