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NL7808183A - CATHODE FOR ELECTRONIC EMISSION. - Google Patents

CATHODE FOR ELECTRONIC EMISSION.

Info

Publication number
NL7808183A
NL7808183A NL7808183A NL7808183A NL7808183A NL 7808183 A NL7808183 A NL 7808183A NL 7808183 A NL7808183 A NL 7808183A NL 7808183 A NL7808183 A NL 7808183A NL 7808183 A NL7808183 A NL 7808183A
Authority
NL
Netherlands
Prior art keywords
cathode
electronic emission
emission
electronic
Prior art date
Application number
NL7808183A
Other languages
Dutch (nl)
Original Assignee
Balzers Hochvakuum
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 Balzers Hochvakuum filed Critical Balzers Hochvakuum
Publication of NL7808183A publication Critical patent/NL7808183A/en

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
NL7808183A 1977-09-02 1978-08-03 CATHODE FOR ELECTRONIC EMISSION. NL7808183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1066577A CH617793A5 (en) 1977-09-02 1977-09-02

Publications (1)

Publication Number Publication Date
NL7808183A true NL7808183A (en) 1979-03-06

Family

ID=4365548

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7808183A NL7808183A (en) 1977-09-02 1978-08-03 CATHODE FOR ELECTRONIC EMISSION.

Country Status (5)

Country Link
CH (1) CH617793A5 (en)
DE (2) DE7821817U1 (en)
FR (1) FR2402297A1 (en)
GB (1) GB2003655B (en)
NL (1) NL7808183A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023456B2 (en) * 1978-11-01 1985-06-07 電気化学工業株式会社 Thermionic cathode device
FR2445605A1 (en) * 1978-12-27 1980-07-25 Thomson Csf DIRECT HEATING CATHODE AND HIGH FREQUENCY ELECTRONIC TUBE COMPRISING SUCH A CATHODE
DE3120454A1 (en) * 1981-05-22 1982-12-09 geb. Vlasova Margarita Sergeevna Moskva Čupina Field emission cathode
JPS57196443A (en) * 1981-05-29 1982-12-02 Denki Kagaku Kogyo Kk Manufacture of hot cathode
CH672860A5 (en) * 1986-09-29 1989-12-29 Balzers Hochvakuum
JP6636472B2 (en) * 2017-02-28 2020-01-29 株式会社日立ハイテクノロジーズ Electron source and electron beam device using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1061633A (en) * 1951-03-28 1954-04-14 Thomson Houston Comp Francaise Substances with high emissivity
GB1045396A (en) * 1965-07-23 1966-10-12 Standard Telephones Cables Ltd Thermionic cathodes
GB1210007A (en) * 1968-07-05 1970-10-28 Mullard Ltd Cathode
US3532923A (en) * 1969-03-17 1970-10-06 Ibm Pyrolytic graphite support for lanthanum hexaboride cathode emitter
US3803677A (en) * 1972-04-28 1974-04-16 Air Liquide Method for making cathodes for electron guns
JPS607335B2 (en) * 1974-11-29 1985-02-23 カナデイアン、パテンツ、アンド、デイベラツプメント、リミテツド thermionic emission cathode
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode

Also Published As

Publication number Publication date
DE7821817U1 (en) 1987-06-04
CH617793A5 (en) 1980-06-13
DE2832027A1 (en) 1979-03-15
FR2402297A1 (en) 1979-03-30
GB2003655B (en) 1982-05-26
GB2003655A (en) 1979-03-14
DE2832027C3 (en) 1987-05-07
DE2832027B2 (en) 1981-07-09
FR2402297B1 (en) 1984-02-10

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed