GB1009986A - Electron emitting element for electron gun - Google Patents

Electron emitting element for electron gun

Info

Publication number
GB1009986A
GB1009986A GB13936/62A GB1393662A GB1009986A GB 1009986 A GB1009986 A GB 1009986A GB 13936/62 A GB13936/62 A GB 13936/62A GB 1393662 A GB1393662 A GB 1393662A GB 1009986 A GB1009986 A GB 1009986A
Authority
GB
United Kingdom
Prior art keywords
electron
emitting element
clamping portions
strip
electron gun
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
GB13936/62A
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.)
Welding Research Inc
Original Assignee
Welding Research Inc
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
Priority claimed from US109575A external-priority patent/US3187216A/en
Application filed by Welding Research Inc filed Critical Welding Research Inc
Publication of GB1009986A publication Critical patent/GB1009986A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
    • H01J37/06—Electron sources; Electron guns
    • H01J37/067—Replacing parts of guns; Mutual adjustment of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
    • H01J37/06—Electron sources; Electron guns
    • H01J37/065—Construction of guns or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
    • H01J37/06—Electron sources; Electron guns
    • H01J37/07—Eliminating deleterious effects due to thermal effects or electric or magnetic fields

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1,009,986. Cathode constructions. WELDING RESEARCH Inc. April 11, 1962 [May 23, 1961], No. 13936/62. Heading H1D. An electron emitting element comprises a strip of metal having a shape which provides a pair of spaced clamping portions 59 connected to a central flat area 61 by connecting portions 60 inclined to the clamping portions, the flat area and clamping portions being in planes at right angles to each other. The strip may be of tungsten or tantalum, and may be used in the electron gun described in Specification 1,009,987.
GB13936/62A 1961-05-12 1962-04-11 Electron emitting element for electron gun Expired GB1009986A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US109575A US3187216A (en) 1961-05-12 1961-05-12 Electron gun having a releasably clamped electron emitting element
US112084A US3197669A (en) 1961-05-12 1961-05-23 Electron emitting element for electron gun
US380746A US3322930A (en) 1961-05-12 1964-07-07 Protective shield for electron gun

Publications (1)

Publication Number Publication Date
GB1009986A true GB1009986A (en) 1965-11-17

Family

ID=27380688

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13936/62A Expired GB1009986A (en) 1961-05-12 1962-04-11 Electron emitting element for electron gun
GB13938/62A Expired GB1009987A (en) 1961-05-12 1962-04-11 Electron gun

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB13938/62A Expired GB1009987A (en) 1961-05-12 1962-04-11 Electron gun

Country Status (4)

Country Link
US (2) US3197669A (en)
CH (2) CH414876A (en)
DE (1) DE1232661B (en)
GB (2) GB1009986A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396262A (en) * 1963-11-28 1968-08-06 Nippon Electric Co Means for observing electron beams
US3433923A (en) * 1964-08-10 1969-03-18 Mech Tronics Corp Electronic beam welding machine
US3400243A (en) * 1964-08-10 1968-09-03 Mech Tronics Corp Electron beam welding machine
US3433922A (en) * 1964-08-10 1969-03-18 Mech Tronics Corp Electron beam welding machine
US3428776A (en) * 1966-01-28 1969-02-18 Gen Electric Method and apparatus for extracting a charged particle beam into a higher pressure atmosphere
US3474220A (en) * 1967-05-17 1969-10-21 Webb James E Device for preventing high voltage arcing in electron beam welding
DE3333686A1 (en) * 1983-09-17 1985-04-04 Leybold-Heraeus GmbH, 5000 Köln ELECTRON BEAM CANNON FOR HEATING MATERIALS, ESPECIALLY FOR WELDING
DE3930203A1 (en) * 1989-09-09 1991-03-14 Ptr Praezisionstech Gmbh CATODE HOLDER FOR AN ELECTRONIC RADIATOR
EP0417640B1 (en) * 1989-09-09 1996-12-04 Ptr Präzisionstechnik Gmbh Cathode support for election beam producing device
US5075532A (en) * 1990-06-19 1991-12-24 Jatco Corporation Spatter-free electron beam welding apparatus with spatter catching device associated therewith
DE4104845C5 (en) * 1991-02-16 2004-09-09 PTR Präzisionstechnik GmbH Electron beam generator, in particular for an electron beam gun

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB419727A (en) * 1932-04-22 1934-11-19 Loewe Opta Gmbh A braun tube for oscillographic and television purposes
BE473991A (en) * 1941-06-24
US2501882A (en) * 1948-03-18 1950-03-28 Research Corp High-voltage high-vacuum acceleration tube
US2771568A (en) * 1951-01-31 1956-11-20 Zeiss Carl Utilizing electron energy for physically and chemically changing members
GB697823A (en) * 1951-07-30 1953-09-30 Vickers Electrical Co Ltd Improvements relating to electric discharge apparatus
US2727177A (en) * 1952-02-11 1955-12-13 Westinghouse Electric Corp Electrostatic lens system
DE1100835B (en) * 1952-03-01 1961-03-02 Zeiss Carl Fa Device for milling profiles, for cutting templates or for drilling nozzle channels by means of a charge carrier beam
DE1033816B (en) * 1952-07-25 1958-07-10 Zeiss Carl Fa Method for drilling fine holes
NL109549C (en) * 1952-10-17
DE1036419B (en) * 1954-07-24 1958-08-14 Siemens Ag Electron source with flat cathode for electron beam devices working on the pump
US2932588A (en) * 1955-07-06 1960-04-12 English Electric Valve Co Ltd Methods of manufacturing thin films of refractory dielectric materials
US3046936A (en) * 1958-06-04 1962-07-31 Nat Res Corp Improvement in vacuum coating apparatus comprising an ion trap for the electron gun thereof
DE1119428B (en) * 1958-08-30 1961-12-14 Zeiss Carl Fa Device for object observation in devices for material processing by means of a charge carrier beam
GB872579A (en) * 1958-10-15 1961-07-12 Ass Elect Ind Improvements relating to electron gun assemblies
US3069584A (en) * 1959-07-29 1962-12-18 Jack W Frazer Method of making tungsten filaments
SU137604A1 (en) * 1960-10-12 1960-11-30 О.К. Назаренко Electron beam welding device

Also Published As

Publication number Publication date
US3197669A (en) 1965-07-27
GB1009987A (en) 1965-11-17
DE1232661B (en) 1967-01-19
US3322930A (en) 1967-05-30
CH400381A (en) 1965-10-15
CH414876A (en) 1966-06-15

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