GB1284034A - Cathode assembly - Google Patents

Cathode assembly

Info

Publication number
GB1284034A
GB1284034A GB9308/70A GB930870A GB1284034A GB 1284034 A GB1284034 A GB 1284034A GB 9308/70 A GB9308/70 A GB 9308/70A GB 930870 A GB930870 A GB 930870A GB 1284034 A GB1284034 A GB 1284034A
Authority
GB
United Kingdom
Prior art keywords
bodies
layers
current flow
posts
emitter
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
GB9308/70A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1284034A publication Critical patent/GB1284034A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/148—Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
    • 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
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)
GB9308/70A 1969-03-17 1970-02-26 Cathode assembly Expired GB1284034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80769569A 1969-03-17 1969-03-17

Publications (1)

Publication Number Publication Date
GB1284034A true GB1284034A (en) 1972-08-02

Family

ID=25196972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9308/70A Expired GB1284034A (en) 1969-03-17 1970-02-26 Cathode assembly

Country Status (4)

Country Link
US (1) US3532923A (enrdf_load_stackoverflow)
DE (1) DE2011615C3 (enrdf_load_stackoverflow)
FR (1) FR2033868A5 (enrdf_load_stackoverflow)
GB (1) GB1284034A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010128A1 (de) * 1978-08-31 1980-04-30 Siemens Aktiengesellschaft Direkt geheizte Kathode für eine Elektronenröhre mit koaxialem Elektrodenaufbau und Verfahren zum Herstellen einer derartigen Kathode
EP0013201A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Cathode à chauffage direct et tube électronique haute fréquence comportant une telle cathode

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1291221A (en) * 1968-07-07 1972-10-04 Smith Kenneth C A Electron probe forming system
US3711908A (en) * 1970-08-27 1973-01-23 Ibm Method for forming small diameter tips on sintered material cathodes
GB1394055A (en) * 1971-07-09 1975-05-14 Nat Res Dev Electron emitters
JPS5277661A (en) * 1975-12-24 1977-06-30 Jeol Ltd Electron gun
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode
DE2732960C2 (de) * 1977-07-21 1982-04-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Glühkathode und Verfahren zu ihrer Herstellung
CH617793A5 (enrdf_load_stackoverflow) * 1977-09-02 1980-06-13 Balzers Hochvakuum
FR2418964A1 (fr) * 1978-03-01 1979-09-28 Commissariat Energie Atomique Cathode pour canon electronique
US4258283A (en) * 1978-08-31 1981-03-24 Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten Cathode for electron emission
JPS6023456B2 (ja) * 1978-11-01 1985-06-07 電気化学工業株式会社 熱電子陰極装置
JPS5598435A (en) * 1979-01-23 1980-07-26 Denki Kagaku Kogyo Kk Hot cathode
US4288717A (en) * 1979-11-06 1981-09-08 Denki Kagaku Kogyo Kabushiki Kaisha Thermionic cathode apparatus
US4760306A (en) * 1983-06-10 1988-07-26 The United States Of America As Represented By The United States Department Of Energy Electron emitting filaments for electron discharge devices
NL8800539A (nl) * 1988-03-03 1989-10-02 Philips Nv Elektronen bundel apparaat.
US5444327A (en) * 1993-06-30 1995-08-22 Varian Associates, Inc. Anisotropic pyrolytic graphite heater
FR2726121B1 (fr) * 1994-10-21 1996-11-15 Thomson Tubes Electroniques Dispositif de chauffage par rayonnement pour cathode a chauffage indirect
JP4951477B2 (ja) * 2006-12-04 2012-06-13 電気化学工業株式会社 電子放出源

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US323983A (en) * 1885-08-11 Incandescent lamp
US978094A (en) * 1909-09-13 1910-12-06 Frederick R Campbell Incandescent electric lamp.
US2813991A (en) * 1952-11-05 1957-11-19 Gen Electric Electron emitting electrode
US3069584A (en) * 1959-07-29 1962-12-18 Jack W Frazer Method of making tungsten filaments
US3374386A (en) * 1964-11-02 1968-03-19 Field Emission Corp Field emission cathode having tungsten miller indices 100 plane coated with zirconium, hafnium or magnesium on oxygen binder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010128A1 (de) * 1978-08-31 1980-04-30 Siemens Aktiengesellschaft Direkt geheizte Kathode für eine Elektronenröhre mit koaxialem Elektrodenaufbau und Verfahren zum Herstellen einer derartigen Kathode
EP0013201A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Cathode à chauffage direct et tube électronique haute fréquence comportant une telle cathode

Also Published As

Publication number Publication date
FR2033868A5 (enrdf_load_stackoverflow) 1970-12-04
DE2011615A1 (de) 1970-09-24
DE2011615B2 (de) 1973-05-10
DE2011615C3 (de) 1973-12-06
US3532923A (en) 1970-10-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee