FR1365620A - Beam concentration device - Google Patents

Beam concentration device

Info

Publication number
FR1365620A
FR1365620A FR939341A FR939341A FR1365620A FR 1365620 A FR1365620 A FR 1365620A FR 939341 A FR939341 A FR 939341A FR 939341 A FR939341 A FR 939341A FR 1365620 A FR1365620 A FR 1365620A
Authority
FR
France
Prior art keywords
concentration device
beam concentration
concentration
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
FR939341A
Other languages
French (fr)
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 Corp
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
Application granted granted Critical
Publication of FR1365620A publication Critical patent/FR1365620A/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, ion-optical arrangement
    • H01J37/10—Lenses
    • H01J37/14—Lenses magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Radiation-Therapy Devices (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Microwave Tubes (AREA)
FR939341A 1962-07-03 1963-06-25 Beam concentration device Expired FR1365620A (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
FR1365620A true FR1365620A (en) 1964-07-03

Family

ID=22769935

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939341A Expired FR1365620A (en) 1962-07-03 1963-06-25 Beam concentration device

Country Status (5)

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

Families Citing this family (6)

* 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 (en) * 1966-04-26 1970-08-06 Siemens Ag System for generating a hollow electron beam for travel-time tubes, especially high-power traveling wave tubes
US3614516A (en) * 1970-03-13 1971-10-19 Varian Associates Electron tubes employing a hollow magnetron injected beam and magnetic field reversal focusing
GB2152742B (en) * 1980-04-28 1986-02-19 Emi Varian Ltd Microwave amplifiers and oscillators
FR2591031A1 (en) * 1985-11-29 1987-06-05 Thomson Csf Focuser for electron beam and travelling-wave tube equipped with such a focuser
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 (en) * 1953-04-29
BE534618A (en) * 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 (en) * 1959-04-10
US3020440A (en) * 1959-06-25 1962-02-06 Rca Corp Electron beam device

Also Published As

Publication number Publication date
GB1049875A (en) 1966-11-30
DE1491540B2 (en) 1970-09-10
US3265925A (en) 1966-08-09
SE301193B (en) 1968-05-27
DE1491540A1 (en) 1969-02-20

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