Sebastian Kraft

Publications (1)7.37 Total impact

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  Available from: ArXiv

  Article: Bose-Einstein condensation of alkaline earth atoms: ;{40}Ca.

  Sebastian Kraft, Felix Vogt, Oliver Appel, Fritz Riehle, Uwe Sterr
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  ABSTRACT: 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.
  Physical Review Letters 09/2009; 103(13):130401. · 7.37 Impact Factor