| 摘要 |
<p>A magnetic structure generating a uniform magnetic field comprising at least one pair (12, 14) of magnetic wedges of identical shape arranged symmetrically about a first axis and abutting one another along a common edge. Each magnetic wedge has a first side and a second side which terminate at the common edge. The first wedge of each pair is positioned to define a first angle between the first side and the first axis and a second angle between the second side and the first axis, and is uniformly magnetized in a direction relative to a second axis (perpendicular to the first axis) which is a function of the sum of the first and second angles. The second wedge of each pair is magnetized such that the absolute values of components of the magnetization along the first and second axes are equal to components of the magnetization of the first wedge along the first and second axes, and one of the magnetization components of the second wedge is opposite to the magnetization component of the first wedge.</p> |
