GB902484A - Improvements relating to electron discharge devices - Google Patents

Improvements relating to electron discharge devices

Info

Publication number
GB902484A
GB902484A GB2434859A GB2434859A GB902484A GB 902484 A GB902484 A GB 902484A GB 2434859 A GB2434859 A GB 2434859A GB 2434859 A GB2434859 A GB 2434859A GB 902484 A GB902484 A GB 902484A
Authority
GB
United Kingdom
Prior art keywords
capsule
vapour
mixture
nickel
electrode structure
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
GB2434859A
Inventor
Henry Horwood Hawken
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2434859A priority Critical patent/GB902484A/en
Priority to FR833080A priority patent/FR1269379A/en
Publication of GB902484A publication Critical patent/GB902484A/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)
  • Lasers (AREA)

Abstract

902,484. Discharge apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 29, 1960 [July 15, 1959], No. 24348/59. Class 39 (1). In a discharge device, the electrode structure supports a capsule which contains granular material capable of emitting a vapour. The cap sule has a porous wall permitting escape of the vapour but not of the granular material. As shown, the nickel capsule 15 has a cupshaped portion and a coverplate having a central porous region formed by compressing a mixture of nickel powder and paraffin wax into the centre of an annular nickel plate and heating. The capsule, which may alternatively be of molybdenum or tungsten, contains a mixture of caesium chromate and silicon powder, which, upon induction heating, gives off caesium vapour to sensitize the antimony coatings on the dynodes 7-9, 11 and 12. The electrode structure further includes a photoemissive cathode 6 and an anode 13. In a further embodiment of the invention, a " Trigatron " (Registered Trade Mark) is provided with a capsule containing a mixture of potassium chlorate and manganese dioxide to provide a continuous supply of oxygen during operation
GB2434859A 1959-07-15 1959-07-15 Improvements relating to electron discharge devices Expired GB902484A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2434859A GB902484A (en) 1959-07-15 1959-07-15 Improvements relating to electron discharge devices
FR833080A FR1269379A (en) 1959-07-15 1960-07-15 Further development of electronic discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2434859A GB902484A (en) 1959-07-15 1959-07-15 Improvements relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB902484A true GB902484A (en) 1962-08-01

Family

ID=10210304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2434859A Expired GB902484A (en) 1959-07-15 1959-07-15 Improvements relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB902484A (en)

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