We consider the properties of condensed inert gases as an atomic system with pairing interaction between nearest atoms on the phase line of melting, when attraction and repulsion between atoms change one to other. Zero point corresponds to pressure about of 10 GPa. Experimental method of diamond anvil allows us to obtain pressures up to 100 GPa. According to experimental data, switching of interaction is non-singular point. Therefore, the pressure on the phase line of melting increases monotonic with temperature. We suggest the interaction potential between two identical atoms of an inert gas. One of the border corresponds to repulsion with the interaction potential of 0.3 eV. The other border corresponds to the bottom of the potential well. Parameters of the potential are determined from the experimental data for the thermal conductivity coefficient at high temperatures. In the switching region, jumps of atomic density and of the internal energy are relatively small. Therefore, the jump of the internal energy due to variation of structure of atomic system becomes significant. We found the criteria of observed behavior of condensed inert gases at the phase transition in the region, which corresponds to the positive jump of atomic density and of the internal energy both in the case of attraction, as in the case of repulsion. Keywords: melting phase line, exchange interaction of inert gas atoms, diamond anvil method.

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Дата начала обработки статистических данных - 27 января 2016 г.