Mianzhen Mo
(SLAC National Accelerator Laboratory)
Valerie Becker
(Department of Physics, Southern Illinois University Edwardsville)
Benjamin Kwasi Ofori-Okai
(SLAC National Accelerator Laboratory)
Zhijiang Chen
(SLAC National Accelerator Laboratory)
Bastian Witte
(SLAC National Accelerator Laboratory)
Xiaozhe Shen
(SLAC National Accelerator Laboratory)
Renkai Li
(SLAC National Accelerator Laboratory)
Xijie Wang
(SLAC National Accelerator Laboratory)
Siegfried Glenzer
(SLAC National Accelerator Laboratory)
Electron-lattice coupling strength governs the energy transfer between electrons and lattices and is important for understanding the material behavior under thermal non-equilibrium conditions. Here we employed time-resolved electron diffraction at MeV energies to directly study the electron-lattice relaxation in 40-nm-thick polycrystalline copper excited by femtosecond optical lasers. The temporal evolution of lattice temperature over a range of excitation fluences were obtained from the measurements of Debye-Waller decay of multiple diffraction peaks. The lattice temperature results were compared to two-temperature model simulations to derive the electron-lattice coupling strength in copper. This work was supported by the U.S. DOE Office of Science, Fusion Energy Science under FWP #100182.
Mianzhen Mo
(SLAC National Accelerator Laboratory)
Valerie Becker
(Department of Physics, Southern Illinois University Edwardsville)
Benjamin Kwasi Ofori-Okai
(SLAC National Accelerator Laboratory)
Zhijiang Chen
(SLAC National Accelerator Laboratory)
Bastian Witte
(SLAC National Accelerator Laboratory)
Xiaozhe Shen
(SLAC National Accelerator Laboratory)
Renkai Li
(SLAC National Accelerator Laboratory)
Xijie Wang
(SLAC National Accelerator Laboratory)
Siegfried Glenzer
(SLAC National Accelerator Laboratory)
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