Fig. 8From: Optimal beam sources for Stark decelerators in collision experiments: a tutorial reviewArrival time distributions of NO radicals seeded in Ar, produced by an NPV (left) or JV (right) positioned at a distance of 87 mm from the interaction region. At selected arrival time positions, indicated by the letters A,B,C (NPV) or a,b,c (JV), the mean speed and velocity spreads of the packets are measured using velocity map imagingBack to article page