Miniature Annular Permanent Magnet Assembly with Fast Far Field Decay and Majority Collimated Central Field
Garnet Cameron, Jonathan Cuevas, David Shiner
TL;DR
This paper introduces a compact annular NdFeB magnet assembly with rapid far-field decay and a highly collimated central magnetic field, enhancing laser spectroscopy experiments.
Contribution
It presents a novel miniature magnet assembly with significantly improved decay and collimation properties over traditional designs.
Findings
Half the far field decay distance of previous designs
Achieved over 50% collimation better than 1/1000
Demonstrated effectiveness in laser spectroscopy
Abstract
We report on a 3/8" OD x 1/4" ID x 3/8" long NdFeB assembly of 1/16" thick annulars boasting half the 1/100 far field transverse decay distance compared to an ID Helholtz-spaced pair of similar annulars; and greater than 50% of ID collimated better than 1/1000. The device is applied to a He-3,-4 laser spectroscopy experiment.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials · Magnetic properties of thin films