GB2043991B - Method of fabricating a dispenser cathode - Google Patents

Method of fabricating a dispenser cathode

Info

Publication number
GB2043991B
GB2043991B GB7940153A GB7940153A GB2043991B GB 2043991 B GB2043991 B GB 2043991B GB 7940153 A GB7940153 A GB 7940153A GB 7940153 A GB7940153 A GB 7940153A GB 2043991 B GB2043991 B GB 2043991B
Authority
GB
United Kingdom
Prior art keywords
fabricating
dispenser cathode
dispenser
cathode
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
GB7940153A
Other languages
English (en)
Other versions
GB2043991A (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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB2043991A publication Critical patent/GB2043991A/en
Application granted granted Critical
Publication of GB2043991B publication Critical patent/GB2043991B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
GB7940153A 1978-11-30 1979-11-20 Method of fabricating a dispenser cathode Expired GB2043991B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US96486778A 1978-11-30 1978-11-30

Publications (2)

Publication Number Publication Date
GB2043991A GB2043991A (en) 1980-10-08
GB2043991B true GB2043991B (en) 1983-05-11

Family

ID=25509102

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7940153A Expired GB2043991B (en) 1978-11-30 1979-11-20 Method of fabricating a dispenser cathode
GB8210616A Expired GB2100502B (en) 1978-11-30 1979-11-20 Dispenser cathodes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8210616A Expired GB2100502B (en) 1978-11-30 1979-11-20 Dispenser cathodes

Country Status (4)

Country Link
JP (1) JPS5576538A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1150763A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE2954658C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB2043991B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56118242A (en) * 1980-02-23 1981-09-17 New Japan Radio Co Ltd Thermion emission cathode
JPS56130057A (en) * 1980-03-18 1981-10-12 Matsushita Electric Ind Co Ltd Hot cathode
JPS587740A (ja) * 1981-06-30 1983-01-17 インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン カソード用の電子放出層を形成する方法
EP0121564B1 (en) * 1982-10-12 1987-11-25 Hughes Aircraft Company Method for fabricating a dispenser-reservoir housing for a dispenser cathode
DE4114856A1 (de) * 1991-05-07 1992-11-12 Licentia Gmbh Vorratskathode und verfahren zu deren herstellung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881512A (en) * 1954-06-16 1959-04-14 Cie Generale De Telegraphite S Composition for sintered barium cathodes
DE1071849B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1955-02-05 1959-12-24
BE550302A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1955-08-15
US2874077A (en) * 1957-10-23 1959-02-17 Rauland Corp Thermionic cathodes
US3159461A (en) * 1958-10-20 1964-12-01 Bell Telephone Labor Inc Thermionic cathode
NL108689C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1959-01-23 1900-01-01
US3243637A (en) * 1962-10-31 1966-03-29 Gen Electric Dispenser cathode
DE2010479C3 (de) * 1970-03-05 1973-11-22 Siemens Ag, 1000 Berlin U. 8000 Muenchen Metallkapillar Kathode mit gegen Luftfeuchtigkeit geschütztem porösem Emissionsstofftrager
US4101800A (en) * 1977-07-06 1978-07-18 The United States Of America As Represented By The Secretary Of The Navy Controlled-porosity dispenser cathode

Also Published As

Publication number Publication date
GB2043991A (en) 1980-10-08
GB2100502B (en) 1983-08-03
JPH028413B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-02-23
DE2947919C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-06-20
DE2954658C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-01-17
JPS5576538A (en) 1980-06-09
DE2947919A1 (de) 1980-06-12
CA1150763A (en) 1983-07-26
GB2100502A (en) 1982-12-22

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Legal Events

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

Effective date: 19921120