Photodissociation of ND3 and ND2H at 193.3 nm: Symmetry dependence of the rotational distributions and vibrational excitation of the ND2 (A∼2A1) fragment

► First identification of threshold, K'=0, levels of ND2 photofragments. ► Comparison of photofragmentation of ND3 and ND2H. ► Evidence of symmetry breaking on ND2 ro-vibronic distribution. ► Comparison with tagged Rydberg atom photodissociation experiments.