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L. T. Bugaenko.

High energy chemistry. the experience of system analysis


It was discussed topics of formed for last decades very breit division of chemie – high energy chemistry, which studies the chemical processes induced by unthermic energetic agents such as ionizing radiation, light, electric field etc. External demonstration of high energy chemistry is the formation of ions and excitated molecules at the room temperature, at which these particles can not arise because of Maxwell-Bolzman equilibrium. It was systematised the unthermic energetical agents and chemical disciplins arising owing to these energetic agent. It was shown that there are two groups of energetical agents. The first delivers in own act of interaction the energy which is more then kT (ionizing radiation, light etc). The second delivers in own act of interaction the energy which is smaller then kT (electric field, ultrasound etc), but the stream of this energetic agent is so greit that in the substence is forming the ions and excited molecules. The processes of high energy chemistry have three stages: 1) the interaction of energetic agents with substance with formation of primary intermediates; 2) the nano- and picosecond transformation of primary intermediates to second and third intermediates (the stage of “hot spot”, so as the enrgetic distribution in the substance is ungomogeneous, and on this stage the unusual for the thermal chemistry intermediates take part) and 3) chemical stage which flow at time more microsecond and in which take part excited molecules, ions and radicals habitual for thermal chemistry (the difference of this stage from thermic is that the concentrarion of intemediates on more order bigger than following from Maxwell-Bolzman equilibrium). It discussed some question of high energy chemistry.
Moscow University Chemistry Bulletin.
2001, Vol. 42, No. 3, P. 220

Copyright (C) Chemistry Dept., Moscow State University, 2002
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