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GB747409A - Improvements in or relating to arrangements for producing magnetic fields - Google Patents

Improvements in or relating to arrangements for producing magnetic fields

Info

Publication number
GB747409A
GB747409A GB1275853A GB1275853A GB747409A GB 747409 A GB747409 A GB 747409A GB 1275853 A GB1275853 A GB 1275853A GB 1275853 A GB1275853 A GB 1275853A GB 747409 A GB747409 A GB 747409A
Authority
GB
United Kingdom
Prior art keywords
aperture
series
magnets
producing
arrangements
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
GB1275853A
Inventor
John Conway Walling
Norman Wright Robinson
Harold Hutchinson
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB1275853A priority Critical patent/GB747409A/en
Publication of GB747409A publication Critical patent/GB747409A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/02Permanent magnets [PM]
    • H01F7/0273Magnetic circuits with PM for magnetic field generation
    • H01F7/0278Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

747,409. Magnets. MULLARD RADIO VALVE CO., Ltd. May 7, 1954 [May 7, 1953], No. 12758/53. Class 35. [Also in Group XL (a)] A permanent magnet device for producing a uniform flux through aperture 2 for focusing electrons, comprises a series of annular parts 1 magnetized equally in the axially direction. The device may be of ellipsoid form with a cylindrical aperture, as shown in Fig. 1, or for less accurate results, a series of plain cylindrical magnets with stepped outer diameters may be used. If desired the aperture may be of ellipsoidal form also. For certain purposes a series of plain cylindrical magnets of the same size may be assembled together, the number producing the most uniform axial flux varying with the magnetic material used. The magnetic cylinders may be made in quadrants. The aperture may be of circular or elliptical crosssection, and the magnet may have several apertures. Specification 708,127 is referred to.
GB1275853A 1953-05-07 1953-05-07 Improvements in or relating to arrangements for producing magnetic fields Expired GB747409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1275853A GB747409A (en) 1953-05-07 1953-05-07 Improvements in or relating to arrangements for producing magnetic fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1275853A GB747409A (en) 1953-05-07 1953-05-07 Improvements in or relating to arrangements for producing magnetic fields

Publications (1)

Publication Number Publication Date
GB747409A true GB747409A (en) 1956-04-04

Family

ID=10010582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1275853A Expired GB747409A (en) 1953-05-07 1953-05-07 Improvements in or relating to arrangements for producing magnetic fields

Country Status (1)

Country Link
GB (1) GB747409A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566958A1 (en) * 1984-06-27 1986-01-03 Centre Nat Rech Scient UNIFORM MAGNETIC FIELD GENERATING DEVICE
WO1988002925A1 (en) * 1986-10-17 1988-04-21 Thomson-Cgr Spherical permanent magnet with equatorial access
RU2130661C1 (en) * 1998-07-29 1999-05-20 Морозов Сергей Геннадиевич Magnetic system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566958A1 (en) * 1984-06-27 1986-01-03 Centre Nat Rech Scient UNIFORM MAGNETIC FIELD GENERATING DEVICE
WO1988002925A1 (en) * 1986-10-17 1988-04-21 Thomson-Cgr Spherical permanent magnet with equatorial access
FR2605452A1 (en) * 1986-10-17 1988-04-22 Thomson Cgr SPHERICAL PERMANENT MAGNET WITH EQUATORIAL ACCESS
US5028903A (en) * 1986-10-17 1991-07-02 Centre National De La Recherche Scientifique Spherical permanent magnet with equatorial access
RU2130661C1 (en) * 1998-07-29 1999-05-20 Морозов Сергей Геннадиевич Magnetic system

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