FR1387658A - Perfectionnements apportés aux cathodes et procédé de fabrication de ces cathodes - Google Patents

Perfectionnements apportés aux cathodes et procédé de fabrication de ces cathodes

Info

Publication number
FR1387658A
FR1387658A FR969306A FR969306A FR1387658A FR 1387658 A FR1387658 A FR 1387658A FR 969306 A FR969306 A FR 969306A FR 969306 A FR969306 A FR 969306A FR 1387658 A FR1387658 A FR 1387658A
Authority
FR
France
Prior art keywords
cathodes
manufacturing
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
FR969306A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR1387658A publication Critical patent/FR1387658A/fr
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
FR969306A 1963-04-01 1964-04-01 Perfectionnements apportés aux cathodes et procédé de fabrication de ces cathodes Expired FR1387658A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US269352A US3273005A (en) 1963-04-01 1963-04-01 Electron emitter utilizing nitride emissive material

Publications (1)

Publication Number Publication Date
FR1387658A true FR1387658A (fr) 1965-01-29

Family

ID=23026891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969306A Expired FR1387658A (fr) 1963-04-01 1964-04-01 Perfectionnements apportés aux cathodes et procédé de fabrication de ces cathodes

Country Status (2)

Country Link
US (1) US3273005A (fr)
FR (1) FR1387658A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440475A (en) * 1967-04-11 1969-04-22 Lokomotivbau Elektrotech Lanthanum hexaboride cathode system for an electron beam generator
US3531678A (en) * 1968-06-24 1970-09-29 Raytheon Co Heater with boron nitride coating
JPH08250054A (ja) * 1995-03-14 1996-09-27 Hitachi Ltd 拡散補給型電子線源およびそれを用いた電子線装置
EP1983546A1 (fr) * 2007-04-20 2008-10-22 PANalytical B.V. Cathode et tube pour rayons X
US8729470B2 (en) * 2009-06-14 2014-05-20 DLA Instruments Electron microscope with an emitter operating in medium vacuum

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE340858A (fr) *
US1733813A (en) * 1921-08-01 1929-10-29 Westinghouse Lamp Co Composite body and method of producing the same
US1698850A (en) * 1923-03-31 1929-01-15 Westinghouse Lamp Co Activation of refractory metal filaments
NL28028C (fr) * 1928-04-05
NL34423C (fr) * 1930-07-16
US1895437A (en) * 1931-03-24 1933-01-31 Rca Corp Method of degassing cathodes of electron discharge tubes
US2659685A (en) * 1950-03-31 1953-11-17 Gen Electric Boride cathodes
US2742585A (en) * 1952-08-22 1956-04-17 Gen Electric Electrical vapor detector
NL266639A (fr) * 1960-07-05

Also Published As

Publication number Publication date
US3273005A (en) 1966-09-13

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