Diagnostics of high-temperature plasmas by the X-ray spectra of heavy elements S.N. Andreev, A.P. Shevelko, I.Yu. Tolstikhina, L.A. Vainstein and O.F. Yakushev EPJ Web Conf., 132 (2017) 02022 Published online: 13 December 2016 DOI: 10.1051/epjconf/201713202022