Physical Review B
We report direct measurement of hot-electron temperatures and relaxation dynamics for peak electron temperatures between 3400 and 11 000 K utilizing two-pulse-correlation femtosecond (fs) thermionic emission. The fast relaxation times (<1.5 ps) are described by extending RT characterizations of the thermal conductivity, electron-phonon coupling, and electronic specific heat to these high electron temperatures.
"Time-Resolved Electron Temperature Measurement in a Highly-Excited Gold Target Using Femtosecond Thermionic Emission," X. Y. Wang, D. M. Riffe, Y.-S. Lee, and M. C. Downer, Phys. Rev. B 50, 8016 (1994).