1. Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
2. School of Physics and Engineering, ITMO University, St. Petersburg 191002, Russia
3. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow 119991, Russia
4. Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk 142190, Russia
5. Lebedev Physical Institute, Russian Academy of Sciences, Moscow 117924, Russia