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Ground-state ^52Cr atoms have been magnetically trapped using buffer-gas loading. The atoms are produced by laser ablation of solid ^52Cr, thermalized by collisions with a cryogenically cooled helium buffer gas, and trapped by an anti-Helmholtz quadrupole magnetic field. The atoms are detected by absorption spectroscopy on the a^7S₃z^7P₃ transition at 427. 6 nm. Using this technique, approximately 10^11 atoms are loaded into the trap in a single ablation pulse. Loading has been demonstrated at temperatures from 0. 3 to 1. 4 K.
Weinstein et al. (Fri,) studied this question.