Measurement of Cs-Cs elastic scattering atT=30 μK

Abstract

We have measured the elastic collision cross section for spin polarized atomic cesium. Neutral cesium atoms are optically cooled, then loaded into a dc magnetic trap. We infer the scattering rate from the rate at which anisotropies in the initial energy distribution are observed to relax. The cross section for F=3, ${\mathit{m}}_{\mathit{F}}$=-3 on F=3, ${\mathit{m}}_{\mathit{F}}$=-3 is 1.5(4)\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}12}$ ${\mathrm{cm}}^{2}$, and is independent of temperature from 30 to 250 \ensuremath{\mu}K. This determination clarifies the technical requirements for attaining Bose-Einstein condensation in a magnetically trapped Cs vapor. We also study heating due to glancing collisions with 300 K background Cs atoms.

Keywords

PhysicsCaesiumAtomic physicsScatteringElastic scatteringAnisotropyEnergy (signal processing)Nuclear physicsQuantum mechanics

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Publication Info

Year: 1993
Type: article
Volume: 70
Issue: 4
Pages: 414-417
Citations: 250
Access: Closed

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APA Style

                            
                                
                                    C. Monroe, 
                                
                                    Eric Cornell, 
                                
                                    C. A. Sackett
                                
                                et al.
                            
                            (1993). 
                            Measurement of Cs-Cs elastic scattering at<i>T</i>=30 μK. 
                            Physical Review Letters
                            , 70
                            (4)
                            , 414-417.
                            https://doi.org/10.1103/physrevlett.70.414
                        

Identifiers

DOI: 10.1103/physrevlett.70.414