  The effect of an ionic core on the temperature relaxation in dense hot plasma
of beryllium is studied using the pseudpotential model by Gericke et al [Phys.
Rev. E 2010, 81, 065401(R)]. Employing the screened version of the ion
pseudpotential [by Ramazanov et al, Phys. Plasmas 2021, 28 (9), 092702], we
computed the quantum transport cross-section for the electron-ion collisions in
dense beryllium plamsas, where screening is taking into account using the
density response function in the long wavelength regime. The results for the
transport cross-section are used to compute a generalised Coulomb logarithm and
electron-ion collision frequency. Utilizing the latter, we show the effect of
the ionic core on the temperature relaxation. To understand the role of the
ionic core, we compare the results with the data computed considering ions as
point-like charges.
