Accession Number:

AD0702471

Title:

MAGNETIC DIPOLES.

Descriptive Note:

Final rept.,

Corporate Author:

STACKPOLE CARBON CO ST MARYS PA

Report Date:

1970-03-09

Pagination or Media Count:

41.0

Abstract:

Magnetic dipoles were constructed from permanent magnet barium ferrite and soft iron tiles. The magnetic fields were measured in the radial and tangential direction at relatively large distances. It was found that the fields obeyed the ideal dipole law to within a few percent. The radial and tangential components of the field were proportional to the cosine and sine of the angular variation respectively. The ratio of the radial and tangential components was 2, and the magnetic field components decreased with distance as 1r cubed. The effect of iron to ferrite ratios upon the external fields was also noted. It was found that the external field of an all-ferrite dipole configuration increased in proportion to the volume of ferrite present. However, direct substitution of iron for ferrite caused the external field to decrease. Lengthening the dipole configuration by the addition of iron caused an increase in external field but at a rate less than the volume increment. Generally, an increase in the cross section of the dipole configuration led to a decrease in the external field. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE