Radiation Effect on the Chemical Potential of Model Liquids
DOI:
https://doi.org/10.15407/ujpe70.11.769Keywords:
intermolecular interaction, physics of liquids, radiation effect, thermodynamic propertiesAbstract
Irradiation, in particular with electromagnetic radiation, is one of the factors affecting the molecular mechanisms of physiological processes in the human body. In most cases, this influence manifests itself via a change in the chemical composition (radiolysis) or local heating, which invokes nonequilibrium processes. Modern approaches to studying these effects are based on modeling changes in the configurational entropy and chemical potentials of liquids under irradiation. Within this framework, a liquid is considered a two-component solution of excited and unexcited molecules that interact through forces of different types. The goal of this work is to develop some model interaction potentials between the excited and unexcited molecules. It is shown that the interaction between the excited particles is short-range and repulsive. The interaction between the excited and unexcited particles is long-range and can be either attractive or repulsive. Using the thermodynamic perturbation theory, a change in the chemical potential of excited particles with respect to that of unexcited ones is estimated.
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