Study of grown single crystal diamond by optical and X-ray spectroscopy D.B. Radishev, A.L. Vikharev, A.M. Gorbachev, A.B. Muchnikov, P.A. Yunin, V.N. Amosov and N.B. Rodionov EPJ Web Conf., 149 (2017) 02029 Published online: 04 August 2017 DOI: 10.1051/epjconf/201714902029