GB2038541B - Thermionic cathode and method of making same - Google Patents

Thermionic cathode and method of making same

Info

Publication number
GB2038541B
GB2038541B GB7937723A GB7937723A GB2038541B GB 2038541 B GB2038541 B GB 2038541B GB 7937723 A GB7937723 A GB 7937723A GB 7937723 A GB7937723 A GB 7937723A GB 2038541 B GB2038541 B GB 2038541B
Authority
GB
United Kingdom
Prior art keywords
making same
thermionic cathode
thermionic
cathode
making
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
GB7937723A
Other versions
GB2038541A (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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Publication of GB2038541A publication Critical patent/GB2038541A/en
Application granted granted Critical
Publication of GB2038541B publication Critical patent/GB2038541B/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements
GB7937723A 1978-11-01 1979-10-31 Thermionic cathode and method of making same Expired GB2038541B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53133795A JPS6023456B2 (en) 1978-11-01 1978-11-01 Thermionic cathode device

Publications (2)

Publication Number Publication Date
GB2038541A GB2038541A (en) 1980-07-23
GB2038541B true GB2038541B (en) 1983-03-23

Family

ID=15113190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7937723A Expired GB2038541B (en) 1978-11-01 1979-10-31 Thermionic cathode and method of making same

Country Status (4)

Country Link
JP (1) JPS6023456B2 (en)
DE (1) DE2944083A1 (en)
FR (1) FR2440610A1 (en)
GB (1) GB2038541B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147945A (en) * 1982-02-25 1983-09-02 Toshiba Corp How to use electron gun
JP4951477B2 (en) 2006-12-04 2012-06-13 電気化学工業株式会社 Electron emission source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532923A (en) * 1969-03-17 1970-10-06 Ibm Pyrolytic graphite support for lanthanum hexaboride cathode emitter
JPS5277661A (en) * 1975-12-24 1977-06-30 Jeol Ltd Electron gun
US4054946A (en) * 1976-09-28 1977-10-18 Bell Telephone Laboratories, Incorporated Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode
CH617793A5 (en) * 1977-09-02 1980-06-13 Balzers Hochvakuum

Also Published As

Publication number Publication date
DE2944083A1 (en) 1980-05-14
DE2944083C2 (en) 1987-09-17
GB2038541A (en) 1980-07-23
FR2440610B1 (en) 1984-03-16
FR2440610A1 (en) 1980-05-30
JPS6023456B2 (en) 1985-06-07
JPS5562639A (en) 1980-05-12

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Legal Events

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

Effective date: 19971031