A sextupole magnet as a variable velocity selector for paramagnetic atomic beams in the thermal range
A sextupole magnet can be used as a velocity selector for paramagnetic atoms by suppressing the higher harmonic trajectories by a thin diaphragmstripe in the center of the magnet. Beams with a relative half-width of the velocity distribution of 4% and an intensity of 5 · 1012 particles/sec through an opening with a diameter of 0.5 mm can be produced.