Tering spectrum was obtained for trapped and for

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Unformatted text preview: laser beams with wave The chemical potential m of the trapped condensate w vectors k1 and k2 and frequency difference v , imparting modetermined from the radial width of the condensate di mentum hq along the axis of the trapped condensate. The ¯ tribution [11]. The noncondensate distribution (typical Bragg scattering response of trapped condensates [(b) and (d)] was much weaker than that of condensates after a 5 ms free less than 20% of the total population) was subtracted fro expansion [(c) and (e)]. Absorption images [(b) and (c)] afthe images before evaluating the momentum transfer. ter 70 ms time of flight show scattered atoms distinguished By varying the frequency difference v , the Bragg sca from the denser unscattered cloud by their axial displacement. tering spectrum was obtained for trapped and for freely ex Curves (d) and (e) show radially averaged (vertically in image) panding condensates (Fig. 2). The momentum transfer p profiles of the optical density after subtraction of the thermal distribution. The Bragg scattering velocity...
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This document was uploaded on 02/27/2014 for the course PHYS 284 at Harvard.

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