Introduction Part I Thermodynamics of Ensembles of Classical Particles 1 Excitations in Simple Atomic Ensembles 1.1 Thermodynamics and Dynamics of Particle Ensembles 1.2 Interaction of Inert Gas Atoms 1.3 Similarity Law for Simple Atomic Ensembles 1.4 Evolution of Particle Ensembles 1.5 Voids as Elementary Configurational Excitations 2 Structures of Ensembles of Interacting Particles 2.1 Close-Packed Structures 2.2 Shells in Close-Packed Structures 2.3 Lennard-Jones Crystal 2.4 Morse Crystal 2.5 Surface Energy of Lennard-Jones and Morse Crystals 2.6 Solid and Liquid Inert Gases Near the Triple Point 3 Thermodynamics of Dense Gases and Liquids 3.1 Equation of State for an Ensemble of Randomly Distributed Particles 3.2 Equilibrium of Gas and Condensed States 3.3 Liquid Surface Parameters 3.4 Peculiarities of Similarity for Inert Gases 3.5 Scaling Law for Molecular Systems 4 Clusters with Short-Range Interaction 4.1 Configurations of Solid Clusterswith Pairwise Atomic Interactions 4.2 Peculiarities of Close-Packed Clusterswith Short-Range Interaction 4.3 Constructing fcc-Clusters with Short-RangeInteraction 4.4 Growth of fcc Clusters with Short-Range Atomic Interaction 4.5 Regular Clusters of Close-Packed Structures 4.6 Icosahedral Clusters 4.7 Competition of Icosahedral and Close-Packed Structures 5 Ensembles of Classical Particles with Repulsion 5.1 Thermodynamics of Ensembles of Repelling Particles 5.2 A System of Hard Spheres 5.3 Colloid Suspensions as Systems of Repelling Particles 5.4 Virial Theorem and Instability of Crystal Structure 5.5 Phase Transition for an Ensemble of Repelling Atoms 5.6 Phase Transitions in Inert Gases under High Pressure 5.7 Structures of an Ensemble of Repelling Particles at Low Temperatures Part II Configurational Excitations and Aggregate Statesof Ensembles of Classical Particles 6 Configurational Excitation and Voids in Ensemblesof Bound Classical Atoms 6.1 Separation of Thermal and Configurational Degreesof FYeedom of Clusters 6.2 Lattice Model for the Order-Disorder Phase Transition 6.3 Chemical Equilibria and Phase Transitions 6.4 Internal Voids in a System of Identical Particles 6.5 Void Formation in Two Dimensions 6.6 The Cell Model for Disk Particles 6.7 Peculiarities of Configurational Excitation for Bulk Atomic Systems 6.8 Two-State Approximation for Aggregate States 7 Configurational Cluster Excitation with Pairwise Interactions 7.1 Peculiarities of Configurational Excitation of Clusters 7.2 Structural Phase Transition in a Solid Cluster 7.3 Configurational Excitation of the Icosahedral Cluster of 13 Atoms 7.4 The Cluster as a Microcanonical Ensemble of Bound Atoms 7.5 The Cluster as a Canonical Ensemble of Bound Atoms …… Part III Dynamics of Configurational Excitations in Ensemblesof Classical Particles