GB1304893A - - Google Patents

Info

Publication number
GB1304893A
GB1304893A GB1304893DA GB1304893A GB 1304893 A GB1304893 A GB 1304893A GB 1304893D A GB1304893D A GB 1304893DA GB 1304893 A GB1304893 A GB 1304893A
Authority
GB
United Kingdom
Prior art keywords
magnet
polepieces
sectors
magnets
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
Other languages
English (en)
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 filed Critical
Publication of GB1304893A publication Critical patent/GB1304893A/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
    • 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
    • H01J29/68—Magnetic lenses using permanent magnets only

Landscapes

  • Aerials With Secondary Devices (AREA)
GB1304893D 1970-02-05 1970-02-05 Expired GB1304893A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB550470 1970-02-05
FR7006994A FR2080202A5 (enrdf_load_stackoverflow) 1970-02-05 1970-02-26

Publications (1)

Publication Number Publication Date
GB1304893A true GB1304893A (enrdf_load_stackoverflow) 1973-01-31

Family

ID=26215580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304893D Expired GB1304893A (enrdf_load_stackoverflow) 1970-02-05 1970-02-05

Country Status (2)

Country Link
FR (1) FR2080202A5 (enrdf_load_stackoverflow)
GB (1) GB1304893A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101765A (en) * 1976-07-19 1978-07-18 The United States Of America As Represented By The United States Department Of Energy Means for counteracting charged particle beam divergence
US4128764A (en) * 1977-08-17 1978-12-05 The United States Of America As Represented By The United States Department Of Energy Collective field accelerator
US4355236A (en) * 1980-04-24 1982-10-19 New England Nuclear Corporation Variable strength beam line multipole permanent magnets and methods for their use
GB2128812A (en) * 1982-09-20 1984-05-02 Us Energy Permanent magnet multipole with adjustable strength
EP0522544A1 (en) * 1991-07-10 1993-01-13 Matsushita Electric Industrial Co., Ltd. Flat tube display apparatus
CN105206488A (zh) * 2015-09-29 2015-12-30 电子科技大学 一种用于径向束行波管的径向扇形磁聚焦系统

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101765A (en) * 1976-07-19 1978-07-18 The United States Of America As Represented By The United States Department Of Energy Means for counteracting charged particle beam divergence
US4128764A (en) * 1977-08-17 1978-12-05 The United States Of America As Represented By The United States Department Of Energy Collective field accelerator
US4355236A (en) * 1980-04-24 1982-10-19 New England Nuclear Corporation Variable strength beam line multipole permanent magnets and methods for their use
GB2128812A (en) * 1982-09-20 1984-05-02 Us Energy Permanent magnet multipole with adjustable strength
EP0522544A1 (en) * 1991-07-10 1993-01-13 Matsushita Electric Industrial Co., Ltd. Flat tube display apparatus
US5325014A (en) * 1991-07-10 1994-06-28 Matsushita Electric Industrial Co., Ltd. Flat tube display apparatus
CN105206488A (zh) * 2015-09-29 2015-12-30 电子科技大学 一种用于径向束行波管的径向扇形磁聚焦系统

Also Published As

Publication number Publication date
FR2080202A5 (enrdf_load_stackoverflow) 1971-11-12

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees