We have trapped 40K in a vapor-cell magneto-optical trap starting from a natural abundance sample. This rare, weakly radioactive atom is a fermion. The number of trapped atoms is approximately 8000, with a density of ;108 atoms/cm3. Contrary to what is observed for the other isotopes of potassium, our data indicate that temperatures lower than the Doppler-cooling limit can be reached for 40K. We discuss the interest of these results in view of possible experiments to study a degenerate Fermi gas.
Magneto-optical trapping of fermionic potassium atoms / F.S. CATALIOTTI; E.A. CORNELL; C. FORT; M. INGUSCIO; F. MARIN; M. PREVEDELLI; L. RICCI; G.M. TINO. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 57:(1998), pp. 1136-1138.
Magneto-optical trapping of fermionic potassium atoms
CATALIOTTI, FRANCESCO SAVERIO;FORT, CHIARA;MARIN, FRANCESCO;PREVEDELLI, MARCO;TINO, GUGLIELMO MARIA
1998
Abstract
We have trapped 40K in a vapor-cell magneto-optical trap starting from a natural abundance sample. This rare, weakly radioactive atom is a fermion. The number of trapped atoms is approximately 8000, with a density of ;108 atoms/cm3. Contrary to what is observed for the other isotopes of potassium, our data indicate that temperatures lower than the Doppler-cooling limit can be reached for 40K. We discuss the interest of these results in view of possible experiments to study a degenerate Fermi gas.
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