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[14] [14] Foundation item: The National Natural Science Foundation of China (No.61303006), the Research Award Fund for Outstanding Young Scholars of Shandong Province (No.BS2012ZZ009) and the Shandong University of Technology Supporting Plan for Development of Young Teacher (No.2014-03)

          XU Bin, WU Xiao-yu, LING Shi-quan, et al. Numerical simulation of thermal electron emission in metal films ablated by multi-pulse femtosecond laser［J］.Laser & Optoelectronics Progress, 2012, 49(8): 083201.