DE2011615C3 - Glühkathode - Google Patents

Glühkathode

Info

Publication number
DE2011615C3
DE2011615C3 DE2011615A DE2011615A DE2011615C3 DE 2011615 C3 DE2011615 C3 DE 2011615C3 DE 2011615 A DE2011615 A DE 2011615A DE 2011615 A DE2011615 A DE 2011615A DE 2011615 C3 DE2011615 C3 DE 2011615C3
Authority
DE
Germany
Prior art keywords
emitter
graphite
tip
heat dissipation
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
DE2011615A
Other languages
German (de)
English (en)
Other versions
DE2011615A1 (de
DE2011615B2 (de
Inventor
Siegfried Friedrich Los Gatos Calif. Vogel (V.St.A.)
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 DE2011615A1 publication Critical patent/DE2011615A1/de
Publication of DE2011615B2 publication Critical patent/DE2011615B2/de
Application granted granted Critical
Publication of DE2011615C3 publication Critical patent/DE2011615C3/de
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)
DE2011615A 1969-03-17 1970-03-11 Glühkathode Expired DE2011615C3 (de)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
DE2011615A1 DE2011615A1 (de) 1970-09-24
DE2011615B2 DE2011615B2 (de) 1973-05-10
DE2011615C3 true DE2011615C3 (de) 1973-12-06

Family

ID=25196972

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2011615A Expired DE2011615C3 (de) 1969-03-17 1970-03-11 Glühkathode

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732960A1 (de) * 1977-07-21 1979-02-01 Philips Patentverwaltung Gluehkathode
DE2838020A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Direkt geheizte kathode fuer eine elektronenroehre mit koaxialem elektrodenaufbau
DE2944083A1 (de) * 1978-11-01 1980-05-14 Denki Kagaku Kogyo Kk Kathodeneinrichtung zur abgabe von thermionen

Families Citing this family (16)

* 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
CH617793A5 (enExample) * 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
FR2445605A1 (fr) * 1978-12-27 1980-07-25 Thomson Csf Cathode a chauffage direct et tube electronique haute frequence comportant une telle cathode
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732960A1 (de) * 1977-07-21 1979-02-01 Philips Patentverwaltung Gluehkathode
DE2838020A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Direkt geheizte kathode fuer eine elektronenroehre mit koaxialem elektrodenaufbau
DE2944083A1 (de) * 1978-11-01 1980-05-14 Denki Kagaku Kogyo Kk Kathodeneinrichtung zur abgabe von thermionen

Also Published As

Publication number Publication date
DE2011615A1 (de) 1970-09-24
US3532923A (en) 1970-10-06
DE2011615B2 (de) 1973-05-10
FR2033868A5 (enExample) 1970-12-04
GB1284034A (en) 1972-08-02

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee