GB988025A - Electron beam irradiation apparatus - Google Patents

Electron beam irradiation apparatus

Info

Publication number
GB988025A
GB988025A GB253263A GB253263A GB988025A GB 988025 A GB988025 A GB 988025A GB 253263 A GB253263 A GB 253263A GB 253263 A GB253263 A GB 253263A GB 988025 A GB988025 A GB 988025A
Authority
GB
United Kingdom
Prior art keywords
electron beam
jan
pair
electrodes
side walls
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
GB253263A
Inventor
Jacques Muel
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
Priority claimed from FR886367A external-priority patent/FR1320833A/en
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB988025A publication Critical patent/GB988025A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J33/00—Discharge tubes with provision for emergence of electrons or ions from the vessel; Lenard tubes

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

988,025. Electron beam apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 21, 1963 [Jan. 30, 1962; Jan. 11, 1963], No. 2532/63. Heading H1D. A flat electron beam for irradiating materials is focused by at least one pair of permanent or electromagnets disposed on either side of the beam parallel to its major axis and with their polarities oppositely oriented. The edge effects of the magnetic fields produced may also have the effect of diverging the beam as shown. The electron gun comprises a cathode filament, a pair of reflector electrodes diverging away from the filament, pairs of rod-shaped focusing electrodes at increasing positive potentials and a slotted accelerating electrode. In apparatus for irradiating material 120 in strip form, the electron beam emerges through a window structure D<SP>1</SP> which includes an upper block with a slide valve covering a slot, and a lower water-cooled block with a seating 86 for the window proper 84. The end and side walls of the beam chamber A consist of insulating material, e.g. " Araldite " (Registered Trade Mark), and the side walls are shielded by triangular electrodes 93 or, alternatively, by centrally slotted parallel plates distributed along the chamber. The pair of focusing magnets is indicated at 26<SP>1</SP>.
GB253263A 1962-01-30 1963-01-21 Electron beam irradiation apparatus Expired GB988025A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR886367A FR1320833A (en) 1962-01-30 1962-01-30 Charged particle accelerator and focusing device
FR921170A FR82930E (en) 1962-01-30 1963-01-11 Charged particle accelerator and focusing device

Publications (1)

Publication Number Publication Date
GB988025A true GB988025A (en) 1965-03-31

Family

ID=26194154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB253263A Expired GB988025A (en) 1962-01-30 1963-01-21 Electron beam irradiation apparatus

Country Status (5)

Country Link
BE (1) BE627753A (en)
DE (1) DE1870886U (en)
FR (1) FR82930E (en)
GB (1) GB988025A (en)
LU (1) LU43110A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139414A (en) * 1983-05-03 1984-11-07 Enso Gutzeit Oy Means for creating an electron curtain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139414A (en) * 1983-05-03 1984-11-07 Enso Gutzeit Oy Means for creating an electron curtain

Also Published As

Publication number Publication date
DE1870886U (en) 1963-04-25
BE627753A (en)
LU43110A1 (en) 1963-03-30
FR82930E (en) 1964-05-08

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