Electromagnetic quadrupole-octupole lens
L. P. OvsyannikovaA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgT. Ya. FishkovaPhysicotechnical Institute
ABI
Abstract
A design is proposed for an electromagnetic quadrupole lens with correction for spherical chromatic aberration. This lens consists of eight electrodes, of which four are also the poles of the magnet.
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