Bose-Einstein condensation of alkaline earth atoms: ;{40}Ca.
Phys Rev Lett
; 103(13): 130401, 2009 Sep 25.
Article
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| MEDLINE
| ID: mdl-19905493
We have achieved Bose-Einstein condensation of ;{40}Ca, the first for an alkaline earth element. The influence of elastic and inelastic collisions associated with the large ground-state s-wave scattering length of ;{40}Ca was measured. From these findings, an optimized loading and cooling scheme was developed that allowed us to condense about 2 x 10;{4} atoms after laser cooling in a two-stage magneto-optical trap and subsequent forced evaporation in a crossed dipole trap within less than 3 s. The condensation of an alkaline earth element opens novel opportunities for precision measurements on the narrow intercombination lines as well as investigations of molecular states at the ;{1}S-;{3}P asymptotes.
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MEDLINE
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Revista:
Phys Rev Lett
Año:
2009
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Estados Unidos