Fig. 4From: A detailed account of the measurements of cold collisions in a molecular synchrotronTime-of-flight measurements of ammonia molecules traversing the synchrotron. The numbers above the peaks denote the number of round-trips the molecules have completed at the time of measurement. The inset shows that the 1/e trapping time is 3.2 s. Reprinted with permission from Ref. [35] â’¸2010 APSBack to article page