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Molecular-dynamic simulations of the thermophysical properties of hexanitrohexaazaisowurtzitane single crystal at high pressures and temperatures

  • Structure of Matter and Quantum Chemistry
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Abstract

Molecular dynamic simulations of isothermal compression parameters are performed for a hexanitrohexaazaisowurtzitane single crystal (C6H6O12N12) using a modified ReaxFF-log reactive force field. It is shown that the pressure–compression ratio curve for a single C6H6O12N12 crystal at constant temperature T = 300 K in pressure range P = 0.05–40 GPa is in satisfactory agreement with experimental compression isotherms obtained for a single C6H6O12N12 crystal. Hugoniot molecular-dynamic simulations of the shock-wave hydrostatic compression of a single C6H6O12N12 crystal are performed. Along with Hugoniot temperature–pressure curves, calculated shock-wave pressure–compression ratios for a single C6H6O12N12 crystal are obtained for a wide pressure range of P = 1–40 GPa. It is established that the percussive adiabat obtained for a single C6H6O12N12 crystal is in a good agreement with the experimental data. All calculations are performed using a LAMMPS molecular dynamics simulation software package that provides a ReaxFF-lg reactive force field to support the approach.

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Correspondence to S. A. Kozlova.

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Original Russian Text © S.A. Kozlova, S.A. Gubin, I.V. Maklashova, A.A. Selezenev, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 11, pp. 1879–1882.

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Kozlova, S.A., Gubin, S.A., Maklashova, I.V. et al. Molecular-dynamic simulations of the thermophysical properties of hexanitrohexaazaisowurtzitane single crystal at high pressures and temperatures. Russ. J. Phys. Chem. 91, 2157–2160 (2017). https://doi.org/10.1134/S0036024417110115

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  • DOI: https://doi.org/10.1134/S0036024417110115

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