1. “Nuclear Fuel Cycle” Science and Technology Establishment, National Science Center “Kharkiv Institute of Physics and Technology”, Akademichna St. 1, 61108 Kharkiv, Ukraine.
2. Institute of Plasma Physics, National Science Center “Kharkiv Institute of Physics and Technology”, Akademichna St. I, 61108 Kharkiv, Ukraine
3. Uppsala University, Angstrom Laboratory, SE-75121 Uppsala, Sweden