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The present study is in agreement with our previous investigations of homogeneous (SO2)m clusters that have shown that cluster formation inhibits the dissociation process owing to a steric effect induced by the cluster environment [K. L. Knappenberger, Jr. and A. W. Castleman, Jr., J. Chem. Phys.\u2008121, 3540 (2004)]. The E state lifetime increases sequentially as a function of cluster size to as much as 668 fs when 11 water molecules solvate the chromophore. We have employed a method to compare the ratio of amplitude coefficients, which reflect a respective component of the mathematical fit, to determine the nature of the wave packet evolution in binary clusters. An increase of this ratio by as much as 440% was observed for large cluster sizes. A preferential ion state charge transfer, rather than dissociation, was observed in binary clusters. The significance of cluster size on evaporation processes has been investigated.<\/jats:p>","DOI":"10.1063\/1.1869494","type":"journal-article","created":{"date-parts":[[2005,4,15]],"date-time":"2005-04-15T22:03:21Z","timestamp":1113602601000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":7,"title":["Photodissociation of (SO2)m(H2O)n clusters employing femtosecond pump-probe spectroscopy"],"prefix":"10.1063","volume":"122","author":[{"suffix":"Jr.","given":"K. L.","family":"Knappenberger","sequence":"first","affiliation":[{"name":"Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802 and , University Park, Pennsylvania 16802"},{"name":"Department of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802 and , University Park, Pennsylvania 16802"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"suffix":"Jr.","given":"A. 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