Spin-orbit suppression of cold inelastic collisions of aluminum and heliumстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
Аннотация:We present a quantitative study of suppression of cold inelastic collisions by the spin-orbit interaction. We prepare cold ensembles of > 10$^{11}$ Al($^2P_{1/2}$) atoms via cryogenic buffer-gas cooling and use a single beam optical pumping method to measure their magnetic ($m_J$-changing) and fine-structure ($J$-changing)collisions with $^3$He atoms at millikelvin temperatures over a range of magnetic fields from 0.5 to 6 T. The experimentally determined rates are in good agreement with the functional form predicted by quantum scattering calculations using ab initio potentials. This comparison provides direct experimental evidence
for a proposed model of suppressed inelasticity in collisions of atoms in $^2P_{1/2}$ states [T.V. Tscherbul et al., Phys. Rev. A 80, 040701(R) (2009)], which may allow for sympathetic cooling of other $^2P_{1/2}$ atoms (e.g., In, Tl and metastable halogens).