1. Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand
2. Simulation Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institute, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand
3. Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34000, Thailand