GB940055A - Permanent magnet electron-beam focussing arrangements - Google Patents

Permanent magnet electron-beam focussing arrangements

Info

Publication number
GB940055A
GB940055A GB16747/62A GB1674762A GB940055A GB 940055 A GB940055 A GB 940055A GB 16747/62 A GB16747/62 A GB 16747/62A GB 1674762 A GB1674762 A GB 1674762A GB 940055 A GB940055 A GB 940055A
Authority
GB
United Kingdom
Prior art keywords
arrangement
periodic
division
electron beam
field
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
GB16747/62A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB940055A publication Critical patent/GB940055A/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

Landscapes

  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
GB16747/62A 1961-05-02 1962-05-01 Permanent magnet electron-beam focussing arrangements Expired GB940055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES73780A DE1298197B (de) 1961-05-02 1961-05-02 Permanentmagnetsystem zur gebuendelten Fuehrung des Elektronenstrahls einer Lauffeldroehre

Publications (1)

Publication Number Publication Date
GB940055A true GB940055A (en) 1963-10-23

Family

ID=7504183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16747/62A Expired GB940055A (en) 1961-05-02 1962-05-01 Permanent magnet electron-beam focussing arrangements

Country Status (4)

Country Link
US (1) US3181042A (enrdf_load_stackoverflow)
DE (1) DE1298197B (enrdf_load_stackoverflow)
GB (1) GB940055A (enrdf_load_stackoverflow)
NL (1) NL277862A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5744910A (en) * 1993-04-02 1998-04-28 Litton Systems, Inc. Periodic permanent magnet focusing system for electron beam
US10338002B1 (en) 2016-02-01 2019-07-02 Kla-Tencor Corporation Methods and systems for selecting recipe for defect inspection
US10211021B2 (en) 2016-04-11 2019-02-19 Kla-Tencor Corporation Permanent-magnet particle beam apparatus and method incorporating a non-magnetic metal portion for tunability

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE528454A (enrdf_load_stackoverflow) * 1953-04-29
NL214979A (enrdf_load_stackoverflow) * 1956-03-01
US2791718A (en) * 1956-04-23 1957-05-07 Bell Telephone Labor Inc Magnetic structure for traveling wave tubes
NL218874A (enrdf_load_stackoverflow) * 1957-07-11
US2985792A (en) * 1958-10-02 1961-05-23 Hughes Aircraft Co Periodically-focused traveling-wave tube

Also Published As

Publication number Publication date
US3181042A (en) 1965-04-27
DE1298197B (de) 1969-06-26
NL277862A (enrdf_load_stackoverflow)

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