EP0003937A3 - Cathode for an electron gun - Google Patents

Cathode for an electron gun Download PDF

Info

Publication number
EP0003937A3
EP0003937A3 EP79400126A EP79400126A EP0003937A3 EP 0003937 A3 EP0003937 A3 EP 0003937A3 EP 79400126 A EP79400126 A EP 79400126A EP 79400126 A EP79400126 A EP 79400126A EP 0003937 A3 EP0003937 A3 EP 0003937A3
Authority
EP
European Patent Office
Prior art keywords
cathode
electron gun
gun
electron
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.)
Granted
Application number
EP79400126A
Other languages
French (fr)
Other versions
EP0003937A2 (en
EP0003937B1 (en
Inventor
Gerard Marhic
Philippe Martin
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0003937A2 publication Critical patent/EP0003937A2/en
Publication of EP0003937A3 publication Critical patent/EP0003937A3/en
Application granted granted Critical
Publication of EP0003937B1 publication Critical patent/EP0003937B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/027—Construction of the gun or parts thereof
    • 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
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
EP79400126A 1978-03-01 1979-02-28 Cathode for an electron gun Expired EP0003937B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7805813 1978-03-01
FR7805813A FR2418964A1 (en) 1978-03-01 1978-03-01 CATHODE FOR ELECTRONIC CANNON

Publications (3)

Publication Number Publication Date
EP0003937A2 EP0003937A2 (en) 1979-09-05
EP0003937A3 true EP0003937A3 (en) 1979-09-19
EP0003937B1 EP0003937B1 (en) 1980-10-15

Family

ID=9205196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400126A Expired EP0003937B1 (en) 1978-03-01 1979-02-28 Cathode for an electron gun

Country Status (5)

Country Link
US (1) US4220889A (en)
EP (1) EP0003937B1 (en)
JP (1) JPS54125959A (en)
DE (1) DE2960025D1 (en)
FR (1) FR2418964A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520553A1 (en) * 1982-01-22 1983-07-29 Cameca ELECTRONIC OPTICAL APPARATUS COMPRISING PYROLYTIC GRAPHITE ELEMENTS
US4673842A (en) * 1985-09-03 1987-06-16 General Electric Company Graphite cathode cup for gridded x-ray tubes
US5015908A (en) * 1989-01-23 1991-05-14 Varian Associates, Inc. Fast warm-up cathode for high power vacuum tubes
US5480527A (en) * 1994-04-25 1996-01-02 Vapor Technologies, Inc. Rectangular vacuum-arc plasma source
CN103094019A (en) * 2013-01-21 2013-05-08 江苏达胜加速器制造有限公司 Filament used for microcurrent electronic gun

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1514813A (en) * 1967-03-17 1968-02-23 Lokomotivbau Elektrotech Large area massive cathode cathode cathode device in lanthanum hexaboride for electron ray generator
DE2008176A1 (en) * 1970-02-21 1971-09-09 Fernseh Gmbh Holder for the indirectly heated cathode of a cathode ray system
FR2106968A5 (en) * 1970-09-30 1972-05-05 Cit Alcatel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498775A (en) * 1948-01-16 1950-02-28 Westinghouse Electric Corp Cathode construction
US3440475A (en) * 1967-04-11 1969-04-22 Lokomotivbau Elektrotech Lanthanum hexaboride cathode system for an electron beam generator
US3532923A (en) * 1969-03-17 1970-10-06 Ibm Pyrolytic graphite support for lanthanum hexaboride cathode emitter
US3958146A (en) * 1974-02-08 1976-05-18 Gte Sylvania Incorporated Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
JPS5277661A (en) * 1975-12-24 1977-06-30 Jeol Ltd Electron gun

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1514813A (en) * 1967-03-17 1968-02-23 Lokomotivbau Elektrotech Large area massive cathode cathode cathode device in lanthanum hexaboride for electron ray generator
DE2008176A1 (en) * 1970-02-21 1971-09-09 Fernseh Gmbh Holder for the indirectly heated cathode of a cathode ray system
FR2106968A5 (en) * 1970-09-30 1972-05-05 Cit Alcatel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES, Vol. 18, No. 5, Septembre-Octobre 1975, New York: A.P. BATASHEV et al.: "A cathoderay cathode heater", Pages 1622-1624 *

Also Published As

Publication number Publication date
DE2960025D1 (en) 1981-01-22
EP0003937A2 (en) 1979-09-05
JPS54125959A (en) 1979-09-29
EP0003937B1 (en) 1980-10-15
FR2418964A1 (en) 1979-09-28
FR2418964B1 (en) 1980-09-05
US4220889A (en) 1980-09-02

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