EP0005279A3 - Hot cathode - Google Patents

Hot cathode Download PDF

Info

Publication number
EP0005279A3
EP0005279A3 EP79200056A EP79200056A EP0005279A3 EP 0005279 A3 EP0005279 A3 EP 0005279A3 EP 79200056 A EP79200056 A EP 79200056A EP 79200056 A EP79200056 A EP 79200056A EP 0005279 A3 EP0005279 A3 EP 0005279A3
Authority
EP
European Patent Office
Prior art keywords
hot cathode
cathode
hot
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
EP79200056A
Other languages
German (de)
Other versions
EP0005279A2 (en
EP0005279B1 (en
Inventor
Charley Dipl.-Ing. Buxbaum
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
Bbc Brown Boveri & Cie (aktiengesellschaft)
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 Bbc Brown Boveri & Cie (aktiengesellschaft) filed Critical Bbc Brown Boveri & Cie (aktiengesellschaft)
Publication of EP0005279A2 publication Critical patent/EP0005279A2/en
Publication of EP0005279A3 publication Critical patent/EP0005279A3/en
Application granted granted Critical
Publication of EP0005279B1 publication Critical patent/EP0005279B1/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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
EP79200056A 1978-05-05 1979-02-02 Hot cathode Expired EP0005279B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4890/78 1978-05-05
CH489078A CH629033A5 (en) 1978-05-05 1978-05-05 GLOWH CATHODE.

Publications (3)

Publication Number Publication Date
EP0005279A2 EP0005279A2 (en) 1979-11-14
EP0005279A3 true EP0005279A3 (en) 1979-12-12
EP0005279B1 EP0005279B1 (en) 1981-07-01

Family

ID=4284318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200056A Expired EP0005279B1 (en) 1978-05-05 1979-02-02 Hot cathode

Country Status (6)

Country Link
US (1) US4274030A (en)
EP (1) EP0005279B1 (en)
JP (1) JPS54146951A (en)
AT (1) AT367567B (en)
CH (1) CH629033A5 (en)
DE (2) DE2822614A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2822665A1 (en) * 1978-05-05 1979-11-08 Bbc Brown Boveri & Cie GLOW CATHODE MATERIAL
FR2445605A1 (en) * 1978-12-27 1980-07-25 Thomson Csf DIRECT HEATING CATHODE AND HIGH FREQUENCY ELECTRONIC TUBE COMPRISING SUCH A CATHODE
GB2050045A (en) * 1979-05-29 1980-12-31 Emi Varian Ltd Thermionic cathode
EP0143222B1 (en) * 1983-09-30 1987-11-11 BBC Aktiengesellschaft Brown, Boveri & Cie. Thermionic cathode capable of high emission for an electron tube, and method of manufacture
KR950012511A (en) * 1993-10-05 1995-05-16 이헌조 Impregnated Cathode for Cathode Ray Tubes
ATE167755T1 (en) * 1993-10-28 1998-07-15 Philips Electronics Nv STORAGE CATHODE AND PRODUCTION PROCESS
JPH0850849A (en) * 1994-05-31 1996-02-20 Nec Kansai Ltd Cathode member and electronic tube using it
DE4421810C2 (en) * 1994-06-22 1996-08-29 Siemens Ag Thermionic electron emitter and method for its production
US6815876B1 (en) * 1999-06-23 2004-11-09 Agere Systems Inc. Cathode with improved work function and method for making the same
KR20020063396A (en) * 2001-01-29 2002-08-03 삼성에스디아이 주식회사 Metal cathode for electron tube
US20170330725A1 (en) * 2016-05-13 2017-11-16 Axcelis Technologies, Inc. Lanthanated tungsten ion source and beamline components

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381553A (en) * 1962-10-31 1964-12-14 Thomson Houston Comp Francaise Improvements to electronic tubes
FR1555031A (en) * 1967-02-08 1969-01-24
DE2454569A1 (en) * 1974-10-25 1976-04-29 Bbc Brown Boveri & Cie REACTION CATHODE

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243638A (en) * 1962-10-31 1966-03-29 Gen Electric Dispenser cathode
US3373307A (en) * 1963-11-21 1968-03-12 Philips Corp Dispenser cathode
GB1137124A (en) * 1964-12-23 1968-12-18 Nat Res Dev Thermionic electron emitter
DE1283403B (en) * 1966-08-05 1968-11-21 Siemens Ag Indirectly heated storage cathode for electrical discharge vessels
NL154047B (en) * 1968-01-09 1977-07-15 Philips Nv ELECTRICAL DISCHARGE TUBE WITH A CATHODE CONTAINING INSIDE ACTIVATION MATERIAL, AND CATHOD FOR SUCH DISCHARGE TUBE.
DE1614642B2 (en) * 1967-02-22 1971-10-07 Siemens AG, 1000 Berlin u 8000 München SUPPLY CATHODE IN PARTICULAR MK CATHODE
CH582951A5 (en) * 1973-07-09 1976-12-15 Bbc Brown Boveri & Cie
US4019081A (en) * 1974-10-25 1977-04-19 Bbc Brown Boveri & Company Limited Reaction cathode
US3967150A (en) * 1975-01-31 1976-06-29 Varian Associates Grid controlled electron source and method of making same
US4096406A (en) * 1976-05-10 1978-06-20 Varian Associates, Inc. Thermionic electron source with bonded control grid
US4165473A (en) * 1976-06-21 1979-08-21 Varian Associates, Inc. Electron tube with dispenser cathode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381553A (en) * 1962-10-31 1964-12-14 Thomson Houston Comp Francaise Improvements to electronic tubes
FR1555031A (en) * 1967-02-08 1969-01-24
DE2454569A1 (en) * 1974-10-25 1976-04-29 Bbc Brown Boveri & Cie REACTION CATHODE

Also Published As

Publication number Publication date
AT367567B (en) 1982-07-12
ATA82879A (en) 1981-11-15
EP0005279A2 (en) 1979-11-14
DE2960432D1 (en) 1981-10-08
JPS54146951A (en) 1979-11-16
DE2822614A1 (en) 1979-11-08
US4274030A (en) 1981-06-16
CH629033A5 (en) 1982-03-31
EP0005279B1 (en) 1981-07-01

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