Fig. 4
From: Cascaded collimator for atomic beams traveling in planar silicon devices
Output flux of the planar atomic beam. Measured throughput of the planar atomic beam for both the ordinary and cascaded collimator geometries confirms the factor of 40 suppression of total flux in the latter case. Data are in good agreement with the prediction of an effusive flux model based on the known Rb vapor pressure. The model throughput has been reduced by a factor of 2.4 (2.8) for the cascaded (ordinary) collimators. Horizontal error bars reflect temperature variation across the oven, while vertical error bars reflect both calibration errors and uncertainty in determination of peak fluorescence
