Lanzhou University - School of Physical Science and Technology, Lanzhou University - School of Physical Science and Technology, Lanzhou University - School of Physical Science and Technology, Tsinghua University - Department of Engineering Physics, Lanzhou University - Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University - Key Laboratory of Western China's Environmental Systems (Ministry of Education), Southwest University - School of Materials and Energy, Beijing Normal University (BNU) - Key Laboratory of Beam Technology and Material Modification and Lanzhou University - School of Physical Science and Technology