Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultracold gas

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 66, Issue 5, 2002, Pages 6-

  Harber, D M ^a   Lewandowski, H J ^a   McGuirk, J M ^a   Cornell, E A ^a  

^a UNIVERSITY OF COLORADO   (United States)

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Indexed keywords

EID: 84876773880     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.66.053616     Document Type: Article

References (24)

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13. At (Formula presented) (Formula presented) so interrogation times of 20 ms are acceptable.
14. Where (Formula presented) and (Formula presented) 9.
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19. The Thomas-Fermi radius (and to a lesser extent the critical temperature) are of course interaction dependent, and therefore using measurements of these quantities to calibrate densities in order to characterize interaction strengths is somewhat circular. Our directly measured value of (Formula presented) on the other hand, is based predominantly on measured spatial extent of the cloud and on an absolute determination of the absorption depth, and therefore it is only weakly model dependent. We quote the “worst-case corrected value” of (Formula presented) in order to put a reasonable limit on the size of possible systematic errors, and not because we feel it is the preferred value.
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21. When we changed the length of the first Ramsey pulse, the second pulse length was also changed such that the two pulses combined to form a (Formula presented) pulse, which gives us the maximum signal to noise.
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23. Fitting the decay of the integrated transverse magnetization to (Formula presented) the same functional form as we fit to the actual experimental data, gives values typically within 5%, and at worst 12%, of the (Formula presented) time.
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