Theory of Atom Tunneling Reactions in the Solid Phase

Abstract

It is well-known that temperature and pressure are the main external factors that affect the rate constant of chemical reactions. In the case of reactions in the condensed phase, pressure changes the media parameters and the arrangement of reagents, and temperature determines the different populations in accordance with statistical laws. The named factors affect the classical over-barrier, as well as the quantum under-barrier transitions. The main emphasis in this chapter will be on low temperature tunneling reactions, but first let us briefly consider the activation processes.