Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range

Abstract

Both K-shell X-ray emission spectroscopy and fluorescence spectroscopy are well-accepted diagnostics for experimental studies of warm and hot dense matter. Until now, however, this diagnosis has been used for the study of dense matter with temperatures lower 100 eV or with temperatures above 1 keV. In this work, we have demonstrated the possibility of using K-shell emission spectroscopy for an intermediate temperature range of 100s eV to study dense plasma. Here we discuss an analysis of the hot dense matter emission spectra of a solid-state copper with temperatures up to a few hundred of eVs heated by laser-accelerated charged particles.