1. Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilov st. 38, Moscow 119991, Russia
2. Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya st. 13/19, Moscow 127412, Russia
3. Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan