Modeling of the electron emission by picosecond lasers under an intense electric field in vacuum

Electron emission induced by picosecond laser from solid surfaces placed under an intense electric field has been modeled. The results show an important difference between the electrons temperature (5500 K) and the phonons temperature (850 K). In these conditions, the Fermi-Dirac distribution depends of the electron temperature, while the thermo-field emission becomes effective for temperatures well below the fusion of the metal.