@conference {10.1007/978-3-030-35453-4_13, title = {Ultrafast Inner-Shell Electron Excitation with High Energy Recollision Electron Driven by Mid-infrared Laser}, booktitle = {X-Ray Lasers 2018}, year = {2020}, pages = {85{\textendash}91}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {As one of the most important physical processes of strong-field laser-matter interaction, laser-driven electron-ion recollision is the fundamental process. As we have known, the well-known three-step model of HHG predicts that the cutoff law obeys Ecutoff{\th}inspace}={\th}inspace}Ip{\th}inspace}+{\th}inspace}3.17Up, implying that the maximum kinetic energy of returning electron can be greatly extended by increasing the driving wavelength. With the long wavelength mid-infrared laser pulse, it is easy for the ponderomotive energy of the returning electron to be very large to excite the deep inner-shell electron, which may be used to investigate the ultrafast inner-shell electron dynamics.}, isbn = {978-3-030-35453-4}, author = {Zeng, Z. and Deng, Y. and Zheng, Y. and Marcus, G. and Li, R.}, editor = {Kozlov{\'a}, Michaela and Nejdl, Jaroslav} }