简介：AnewmethodisproposedtocalculatetheGrüneisenparameterdirectlyfromtheexperimentalHugoniotdata,withoutanyassumptiononthelatticevibrationalmodeofthematerialbeingstudied.Comparedwiththeresultscalculatedbythemethodsproposedpreviously,thevaluesoftheGrüneisenparametercalculatedhavethreedistinguishablefeaturesthatsupporttherationalityofthemethod.Anewphenomenonthatthelatticevibrationalmodechangeswiththethermodynamicstateofthesolidhasbeenfirstobservedfromthecalculatedresults,whichimpliesthatthematerialparameterg,characterizingthelatticevibrationalmode,ismaterialdependentratherthanamaterialconstant.
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