NL298777A - - Google Patents

Info

Publication number
NL298777A
NL298777A NL298777DA NL298777A NL 298777 A NL298777 A NL 298777A NL 298777D A NL298777D A NL 298777DA NL 298777 A NL298777 A NL 298777A
Authority
NL
Netherlands
Application number
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.)
Publication date
Publication of NL298777A publication Critical patent/NL298777A/xx

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
NL298777D 1962-10-04 NL298777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES81889A DE1298646B (en) 1962-10-04 1962-10-04 Permanent magnetic focusing system for generating an at least approximately homogeneous magnetic field for the bundled guidance of an electron beam over a larger distance, especially for traveling wave tubes

Publications (1)

Publication Number Publication Date
NL298777A true NL298777A (en) 1900-01-01

Family

ID=7509982

Family Applications (2)

Application Number Title Priority Date Filing Date
NL133615D NL133615C (en) 1962-10-04
NL298777D NL298777A (en) 1962-10-04

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL133615D NL133615C (en) 1962-10-04

Country Status (6)

Country Link
US (1) US3237059A (en)
DE (1) DE1298646B (en)
DK (1) DK103681C (en)
GB (1) GB1039576A (en)
NL (2) NL298777A (en)
SE (1) SE319241B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210120A1 (en) * 1985-05-23 1987-01-28 Siemens Aktiengesellschaft Magnet for a nuclear magnetic resonance tomograph

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1491444B2 (en) * 1965-01-26 1972-04-06 Siemens AG, 1000 Berlin u 8000 München PERMANENT MAGNET SYSTEM FOR GENERATING A SIGNIFICANTLY HOMOGENOUS MAGNETIC FIELD FOR CONCENTRATED GUIDANCE OF AN ELECTRON BEAM OVER A LONGER DISTANCE, IN PARTICULAR FOR WALKING FIELD TUBES
US3686527A (en) * 1969-12-12 1972-08-22 Sanders Associates Inc High-speed synthesized field focus coil
JPS57500217A (en) * 1980-01-28 1982-02-04
US4720692A (en) * 1984-10-24 1988-01-19 The United States Of America As Represented By The Secretary Of The Air Force Long, narrow, uniform magnetic field apparatus and method
US4647887A (en) * 1984-12-24 1987-03-03 The United States Of America As Represented By The Secretary Of The Army Lightweight cladding for magnetic circuits
US4614930A (en) * 1985-03-25 1986-09-30 General Electric Company Radially magnetized cylindrical magnet
US4658228A (en) * 1986-05-01 1987-04-14 The United States Of America As Represented By The Secreatry Of The Army Confinement of longitudinal, axially symmetric, magnetic fields to annular regions with permanent magnets
US4654618A (en) * 1986-05-01 1987-03-31 The United States Of America As Represented By The Secretary Of The Army Confinement of kOe magnetic fields to very small areas in miniature devices
US4701737A (en) * 1986-05-30 1987-10-20 The United States Of America As Represented By The Secretary Of The Army Leakage-free, linearly varying axial permanent magnet field source
FR2605452B1 (en) * 1986-10-17 1988-12-02 Thomson Cgr SPHERICAL PERMANENT MAGNET WITH EQUATORIAL ACCESS
FR2605451B1 (en) * 1986-10-17 1993-12-24 Thomson Cgr PERMANENT CYLINDRICAL MAGNET WITH LONGITUDINAL INDUCED FIELD
FR2605450B1 (en) * 1986-10-17 1988-12-02 Thomson Cgr CYLINDRICAL PERMANENT MAGNET FOR PRODUCING A UNIFORM AND TRANSVERSE INDUCTION FIELD
US4953555A (en) * 1987-10-20 1990-09-04 The United States Of Americas As Represented By The Secretary Of The Army Permanent magnet structure for a nuclear magnetic resonance imager for medical diagnostics
JP2826895B2 (en) * 1990-09-19 1998-11-18 ティーディーケイ株式会社 Permanent magnet magnetic circuit
US5319339A (en) * 1993-03-08 1994-06-07 The United States Of America As Represented By The Secretary Of The Army Tubular structure having transverse magnetic field with gradient
DE4424230C2 (en) * 1994-07-09 1996-08-14 Karlsruhe Forschzent Magnet system for gyrotrons
US5576679A (en) * 1994-10-25 1996-11-19 Shin-Etsu Chemical Co., Ltd. Cylindrical permanent magnet unit suitable for gyrotron
US5786741A (en) * 1995-12-21 1998-07-28 Aura Systems, Inc. Polygon magnet structure for voice coil actuator
US5929732A (en) * 1997-04-17 1999-07-27 Lockheed Martin Corporation Apparatus and method for amplifying a magnetic beam
KR100682661B1 (en) * 2005-09-13 2007-02-15 엘지전자 주식회사 Motor, and washing machine comprising the same
US8179220B2 (en) * 2008-05-28 2012-05-15 Otto Voegeli Confined field magnet system and method
CN105047355A (en) * 2015-08-12 2015-11-11 中国科学院电工研究所 Cylindrical permanent magnet system for focusing and guiding electron beam
CN112912748A (en) * 2018-09-03 2021-06-04 新加坡科技设计大学 Permanent magnet system and method of forming the same
US11875937B2 (en) * 2018-11-29 2024-01-16 Epsitau Ltd. Lightweight asymmetric array of magnet elements
RU206633U1 (en) * 2020-01-28 2021-09-20 Акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (АО "НПП "Исток" им. Шокина") MAGNETIC FOCUSING SYSTEM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725473C (en) * 1935-07-23 1942-10-08 Fernseh Gmbh Electron collecting coil
FR1105964A (en) * 1954-06-03 1955-12-09 Csf Improvement with permanent magnets
NL214979A (en) * 1956-03-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210120A1 (en) * 1985-05-23 1987-01-28 Siemens Aktiengesellschaft Magnet for a nuclear magnetic resonance tomograph
US4706057A (en) * 1985-05-23 1987-11-10 Siemens Aktiengesellschaft Magnet of a nuclear spin tomograph

Also Published As

Publication number Publication date
US3237059A (en) 1966-02-22
SE319241B (en) 1970-01-12
GB1039576A (en) 1966-08-17
NL133615C (en)
DK103681C (en) 1966-02-07
DE1298646B (en) 1969-07-03

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