FR2428913A1 - Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing - Google Patents

Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing

Info

Publication number
FR2428913A1
FR2428913A1 FR7818013A FR7818013A FR2428913A1 FR 2428913 A1 FR2428913 A1 FR 2428913A1 FR 7818013 A FR7818013 A FR 7818013A FR 7818013 A FR7818013 A FR 7818013A FR 2428913 A1 FR2428913 A1 FR 2428913A1
Authority
FR
France
Prior art keywords
appts
cathode
electrostatic shielding
aperture lens
electron beams
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.)
Withdrawn
Application number
FR7818013A
Other languages
French (fr)
Inventor
William A Frutiger
David E Overberg
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.)
Energy Sciences Inc
Original Assignee
Energy Sciences 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
Application filed by Energy Sciences Inc filed Critical Energy Sciences Inc
Priority to FR7818013A priority Critical patent/FR2428913A1/en
Publication of FR2428913A1 publication Critical patent/FR2428913A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G21K5/04—Irradiation devices with beam-forming means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/003—Apparatus or processes specially adapted for manufacturing conductors or cables using irradiation
    • 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
    • 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
    • H01J3/029—Schematic arrangements for beam forming

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

Appts. generating a longitudinal strip of energetic electrons includes a longitudinally extending electron-emitting cathode and conductive cylinders mounted coaxially with the cathode and concentrically disposed at successive spaced radial distances. Each cylinder has a narrow, longitudinal slot radially aligned with the slots of the other cylinders. A positive potential is applied to the innermost cylinder to control the extraction of electrons from the cathode and their egress as a longitudinal beam strip through the slot. An evacuated housing has a window radially aligned with the slots. An accelerating voltage field is established between the outermost cylinder and the window. The cylinders provide electrostatic shielding and aperture lens focussing.
FR7818013A 1978-06-15 1978-06-15 Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing Withdrawn FR2428913A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7818013A FR2428913A1 (en) 1978-06-15 1978-06-15 Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7818013A FR2428913A1 (en) 1978-06-15 1978-06-15 Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing

Publications (1)

Publication Number Publication Date
FR2428913A1 true FR2428913A1 (en) 1980-01-11

Family

ID=9209589

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818013A Withdrawn FR2428913A1 (en) 1978-06-15 1978-06-15 Appts. generating longitudinal strips of energetic electron beams - has slotted conductive cylinders concentrically mounted around cathode for electrostatic shielding and aperture lens focusing

Country Status (1)

Country Link
FR (1) FR2428913A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565022A1 (en) * 1984-05-23 1985-11-29 Ephrati James Device for multipoint emission of penetrating radiation
FR2574978A1 (en) * 1984-12-14 1986-06-20 Commissariat Energie Atomique DEVICE FOR IRRADIATION OF MATERIAL BY AN ELECTRON BEAM

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887599A (en) * 1957-06-17 1959-05-19 High Voltage Engineering Corp Electron acceleration tube
FR1591185A (en) * 1967-10-31 1970-04-27
FR2095985A5 (en) * 1970-06-08 1972-02-11 Matsushita Electric Ind Co Ltd
US3702412A (en) * 1971-06-16 1972-11-07 Energy Sciences Inc Apparatus for and method of producing an energetic electron curtain
US3780334A (en) * 1971-06-09 1973-12-18 Thomson Csf Vacuum tube for generating a wide beam of fast electrons

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887599A (en) * 1957-06-17 1959-05-19 High Voltage Engineering Corp Electron acceleration tube
FR1591185A (en) * 1967-10-31 1970-04-27
FR2095985A5 (en) * 1970-06-08 1972-02-11 Matsushita Electric Ind Co Ltd
US3780334A (en) * 1971-06-09 1973-12-18 Thomson Csf Vacuum tube for generating a wide beam of fast electrons
US3702412A (en) * 1971-06-16 1972-11-07 Energy Sciences Inc Apparatus for and method of producing an energetic electron curtain

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565022A1 (en) * 1984-05-23 1985-11-29 Ephrati James Device for multipoint emission of penetrating radiation
FR2574978A1 (en) * 1984-12-14 1986-06-20 Commissariat Energie Atomique DEVICE FOR IRRADIATION OF MATERIAL BY AN ELECTRON BEAM
EP0186558A1 (en) * 1984-12-14 1986-07-02 Commissariat A L'energie Atomique Device for the irradiation of matter by an electron beam

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Legal Events

Date Code Title Description
ST Notification of lapse