The effect of the Coulomb interaction on the shock-wave process in ion crystals at a nanosecond impact pulse

Acoustic vibrations of an ion crystal under loading by a short pulse shock are considered. The contribution of the Coulomb binding energy of ion crystals to the dependence of elastic modulus on the stress field caused by the RMS value of the electromagnetic field in its absence at the initial moment of time is estimated. Dynamic oscillation equations are written using the Maxwell stress tensor, determined by the second moment of the electromagnetic stress field. It is shown that the description of the nonequilibrium Poisson's ratio in ionic crystals qualitatively describes experimental results.