Model for the arrival-time distribution in fluorescence time-of-flight   experiments
  An operational arrival-time distribution is defined as the distribution of detection times of the first photons emitted by two level atoms in resonance with a perpendicular laser beam in a time of flight experiment. For ultracold Cesium atoms the simulations are in excellent agreement with the theoretical ideal time-of-arrival distribution of Kijowski. 
J. G. Muga, A. D. Baute, J. A. Damborenea and I. L. Egusquiza