| Authors: |
Hiep NT; Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam hieunn@duytan.edu.vn.; Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam., Quang QK; Division of Physics, School of Education, Dong Thap University Cao Lanh 870000 Vietnam., Nhan MTV; Division of Physics, School of Education, Dong Thap University Cao Lanh 870000 Vietnam., Hoang KV; Phenikaa Institute for Advanced Study (PIAS), Phenikaa University Hanoi 12116 Vietnam., Nguyen CQ; Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam hieunn@duytan.edu.vn.; Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam., Hoi BD; Faculty of Physics, University of Education, Hue University Hue 530000 Vietnam buidinhhoi@hueuni.edu.vn., Hieu NN; Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam hieunn@duytan.edu.vn.; Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam. |