[Modified3019]

>I'm not really sure whether to even call it evaporation since I don't think the clusters would fully qualify as vapor until they are broken apart into individual molecules.

Sounds like a chance to coin a suitably obtuse and prim science name, like Prosocial Evaporation, as opposed to Solitary Evaporation.

Gregarious and perhaps Convivial Evaporation are also good candidates.