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Recently a perturbation theory for molecular liquids using hard dumbbells as reference system was suggested by Kohler e t a l . Here, with a somewhat modified approach, it is shown that this type of perturbation theory yields a nearly accurate equation of state even for the most anisotropic...
Symmetrized valence coordinates are linear combinations of conventional valence coordinates which display the symmetry of a set of atoms bound by the valence bonds. Relative motion coordinates are relative translations, or relative rotations, of two or more strongly bonded groups of atoms among...
The overtone spectra of ethane in the gas phase at room temperature and neopentane in the liquid phase at 0 °C are measured and analyzed in the region of the pure local mode overtones corresponding to Δ v CH =3, 4, and 5. Overtone spectra are also measured and analyzed for 2, 2, 3,...
The temperature dependence of the far IR spectrum of α‐N 2 has been studied for a sample at constant volume. The two modes observed near 50 and 72 cm −1 have frequencies which increase with temperature. The integrated intensity of the mode near 50 cm −1 remains constant with temperature,...
The hard‐sphere model is used to predict a compact form of equation of state fluid mixtures.(AIP)
This paper deals with the ground state of spin systems in an external magnetic field interacting with dipole–dipole and exchange interactions. The Luttinger and Tisza approach is adopted. By using group theoretic techniques a simplified form of the equation and constraints results. It is shown...
The many‐body contributions to the OK binding energy of solid Argon are discussed in terms of Aziz‐Chen 13 potential.(AIP)
Molecular beams, microcalorimetry, and mass spectrometry are used to study the physisorption kinetics of H 2 and D 2 molecules on a low temperature substrate. The energy transferred to the surface of a liquid‐helium cooled bolometer by an incident room temperature beam of H 2 and D 2 , and the...
A molecular dynamics (MD) calculation has been carried out for a model of solid methane at a state condition close to the triple point. We have used systems of 32 and 108 molecules interacting via atom–atom potentials. Equilibrium properties such as the configurational energy, pressure, and...
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