title: Autocorrelation measurement of fast electron pulses emitted through the interaction of femtosecond laser pulses with a solid target.
abstract: We report the first direct measurement of the emission duration of laser-accelerated fast electrons from the surface of a solid target irradiated by a high-intensity femtosecond laser pulse. The emission duration is determined by autocorrelation measurement using the Coulomb repulsive forces that act on two equivalent electron pulses. The emission duration depends on the laser pulse duration for laser pulses of 200-690 fs. Numerical modeling of three-dimensional charged particle dynamics indicates that the emission duration of fast electrons is almost equal to the duration of the laser pulse.
authors.affiliation: Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Inoue
authors.forename: Shigeki
authors.initials: S
authors.lastname: Tokita
authors.forename: Kazuto
authors.initials: K
authors.lastname: Otani
authors.forename: Masaki
authors.initials: M
authors.lastname: Hashida
authors.forename: Masayasu
authors.initials: M
authors.lastname: Hata
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Sakagami
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Taguchi
authors.forename: Shuji
authors.initials: S
authors.lastname: Sakabe