1. Department of Physics, School of Arts and Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
2. Laboratory of Radiation Biophysics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
3. Institute of Materials Structure Science, High Energy Accelerator Research Organization, Ibaraki, Japan
4. School of Engineering, Tokai University, Kanagawa, Japan
5. Graduate school of Engineering, Chiba University, Chiba, Japan