| Zugriffsnummer | 23967 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Bose-Einstein condensation of alkaline earth atoms: 40Ca |
| Autor(in); Institution |
Kraft, Sebastian; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Vogt, Felix; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Appel, Oliver; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Riehle, Fritz; 4, Optik, PTB-Braunschweig
Sterr, Uwe; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
|
| Quelle/Jahr | Physical Review Letters: 103 (2009), 13, 130401-1 - 130401-4 |
| ISSN | 0031-9007 |
| DOI | |
| Verlag | Ridge, NY: APS |
| Klassifikationscode | PACS: 03.75.Hh ; PACS: 67.85.Hj |
| Zusammenfassung | We have achieved Bose-Einstein condensation of 40Ca, 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 40Ca was measured. From these findings, an optimized loading and cooling scheme was developed that allowed us to condense about 2×104 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 ¹S-³P asymptotes. |
