Enhanced damping of ion acoustic waves in dense plasmas
Abstract
A theory for the ion acoustic wave damping in dense plasmas and warm dense matter, accounting for the Umklapp process, is presented. A higher decay rate compared to the prediction from the Landau damping theory is predicted for high-Z dense plasmas where the electron density ranges from 1021 to 1024 cm-3 and the electron temperature is moderately higher than the Fermi energy.
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