Photofragmentation studies of small selenium cluster cations Se[sup +, sub n] (n=3-8).

Reports on photofragmentation studies of small selenium cluster cations. Detection of the parent and daughter cluster ions using a reflectron time-of-flight mass spectrometer; Estimating the appearance potentials of all the observed cluster fragment ions; Decrease in dissociation thresholds of the odd-numbered cations with the increase in cluster size.