Incorporation probability of a water molecule into a water cluster

The cross-sections for incorporation of D2O into size- and energy-selected water cluster ions H+(H2O)n (n=2-9) were experimentally measured under single-collision conditions using guided-ion beam tandem mass spectrometry. After estimation of the collision cross-section, the reaction probability for incorporation of D2O into H+(H2O)n was investigated as a function of the collision energy. The reaction probability for incorporation was found to be equal to unity at low collision energy by using the experimental data and theoretical curve derived from our model related to the recoil energy of the incident molecule. We examined, by calculation, the temperature dependence of the probability of the incorporation of H2O into neutral water clusters (H2O)n