Online: April 20, 2000Figure 4. Zero-momentum-transfer peak of BEC exposed to two laser pulses: atom yield vs. interval between pulses. Line: theoretical calculation; points: Atomic Physics Division experiment.Graph of relative probability (0 to 1) vs. delay time (0 to 10 microseconds), for finding the condensate in a state of zero momentum, under the experimental procedures described in the text. Twenty-one experimental data points are displayed, along with a continuous theoretical curve. The Theoretical curve passes close to most of the experimental data, suggesting good overall agreement.