Arjaree Thongon
Department of General Sciences and Physics, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai
Thailand

Chiittakorn Kornphom
Department of General Sciences and Physics, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai
Thailand

Theerachai Bongkarn
Department of Physics, Faculty of Science, Naresuan University, Phitsanulok
Thailand

Supree Pinitsoontorn
Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen
Thailand