1. Institute for Scintillation Materials, STC “Institute for Single Crystals” of the National Academy of Sciences of Ukraine, Kharkiv 61001, Ukraine
2. B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, Kharkiv 61103, Ukraine
3. V. N. Karazin Kharkiv National University, Kharkiv 61022, Ukraine