Fig. 3
From: Ultrafast isomerization in acetylene dication after carbon K-shell ionization
Dynamics of acetylene dication after Auger decay. Deuteron coordination number (N D) of the two carbon atoms a Ca and b Cb. See main text for definition of the deuteron coordination number. c The C–D distances (RCD) for the initially bonded Ca–Da and Cb–Db atoms (green color), and for the initially nonbonded Ca–Db and Cb–Da atoms (orange color). d Effective momentum distribution produced from non-dissociating trajectories, assuming no remnant rotation between momentum vectors during the Coulomb explosion. \({p_{\rm {D} \bot }}\) and \({p_{\rm {D}||}}\) are the components of deuteron momenta that are perpendicular and parallel to the C–C axis, respectively
