1School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, PR China
3Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China
4Anhui Province Key Laboratory of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China
5School of Civil Engineering and Environmental Engineering, Anhui Xinhua University, Hefei 230088, PR China
6School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230026, PR China