“…In the high pressure and condensed phase enhancement reactions become important. There have been many studies of these multi-molecular reactions throughout the gas to condensed phase transition [26][27][28][29][30][31][32][33], Enhancement reactions appear to be of two types: cage-radical, cage-ion reactions involving semi-random recombinations [26,30] and caged-complex reactions [29,31 ] involving the stabilization of an electronically excited cage complex. Evidence exists that these reactions may occur simultaneously [32,33], Although enhancement reactions are complex and description difficult as a result of the inseparability of enhancement events from molecular reactions, several attempts have been made to develop a semi-emperical description of enhancement events [34][35][36], These have considered the variation of bulk [34] and molecular [35] parameters in photolytically-induced cage radical recombinations and the implantation of a hot atom in a lattice matrix [33], No attempt had been made to simulate the effects of collapsing molecular environment on a chemical system which exhibits enhancement reactions.…”