Abstract

This paper briefly summarizes the methodology and results for a new type of hot atom kinetic theory model calculation. The microscopic time dependence for the nuclear recoil 18F + H 2 reaction is characterized using the steady state kinetic theory of hot atom reactions. The relaxing hot atom laboratory momentum distribution is represented using a local equilibrium model. The calculated results illustrate the nature and significance of quasi steady state reaction rate coefficients and of the dynamical coupling between reactive heating and nonreactive cooling phenomena. Under nuclear recoil conditions the nonthermal 18F + H 2 reaction, which exhibits a total hot yield of 100%, fails to establish a high temperature steady state.

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