GB1049875A - Improvements in or relating to focussing arrangements for electron beam tubes - Google Patents

Improvements in or relating to focussing arrangements for electron beam tubes

Info

Publication number
GB1049875A
GB1049875A GB25142/63A GB2514263A GB1049875A GB 1049875 A GB1049875 A GB 1049875A GB 25142/63 A GB25142/63 A GB 25142/63A GB 2514263 A GB2514263 A GB 2514263A GB 1049875 A GB1049875 A GB 1049875A
Authority
GB
United Kingdom
Prior art keywords
field
focusing
distortion
scallop
brillouin
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
GB25142/63A
Other languages
English (en)
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.)
AT&T Inc
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1049875A publication Critical patent/GB1049875A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
    • 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 or ion-optical arrangement
    • H01J37/10—Lenses
    • H01J37/14—Lenses magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Microwave Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Radiation-Therapy Devices (AREA)
GB25142/63A 1962-07-03 1963-06-25 Improvements in or relating to focussing arrangements for electron beam tubes Expired GB1049875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US207294A US3265925A (en) 1962-07-03 1962-07-03 Field perturbing means for preventing beam scalloping in reversed field focusing system

Publications (1)

Publication Number Publication Date
GB1049875A true GB1049875A (en) 1966-11-30

Family

ID=22769935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25142/63A Expired GB1049875A (en) 1962-07-03 1963-06-25 Improvements in or relating to focussing arrangements for electron beam tubes

Country Status (5)

Country Link
US (1) US3265925A (enExample)
DE (1) DE1491540A1 (enExample)
FR (1) FR1365620A (enExample)
GB (1) GB1049875A (enExample)
SE (1) SE301193B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152742A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Microwave amplifiers and oscillators

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396299A (en) * 1964-06-15 1968-08-06 Jeol Ltd Magnetic flux leakage guide for magnetic electron lenses
DE1541036B1 (de) * 1966-04-26 1970-08-06 Siemens Ag System zur Erzeugung eines Elektronenhohlstrahls fuer Laufzeitroehren,insbesondere Wanderfeldroehren hoher Leistung
US3614516A (en) * 1970-03-13 1971-10-19 Varian Associates Electron tubes employing a hollow magnetron injected beam and magnetic field reversal focusing
FR2591031A1 (fr) * 1985-11-29 1987-06-05 Thomson Csf Focalisateur pour faisceau electronique et tube a ondes progressives equipe d'un tel focalisateur
US7666293B2 (en) * 2007-10-04 2010-02-23 Dow Agrosciences Llc Electrochemical reduction of halogenated 4-aminopicolinic acids

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707758A (en) * 1950-12-19 1955-05-03 Sperry Corp Travelling wave tube
NL95352C (enExample) * 1953-04-29
BE534618A (enExample) * 1954-01-04
US2817035A (en) * 1954-04-26 1957-12-17 Hughes Aircraft Co Brillouin flow electron gun
US2956198A (en) * 1955-06-10 1960-10-11 Bell Telephone Labor Inc Traveling wave tubes
NL250365A (enExample) * 1959-04-10
US3020440A (en) * 1959-06-25 1962-02-06 Rca Corp Electron beam device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152742A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Microwave amplifiers and oscillators

Also Published As

Publication number Publication date
SE301193B (enExample) 1968-05-27
US3265925A (en) 1966-08-09
FR1365620A (fr) 1964-07-03
DE1491540A1 (de) 1969-02-20
DE1491540B2 (enExample) 1970-09-10

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