title: Energetic protons from a few-micron metallic foil evaporated by an intense laser pulse.
abstract: With detailed experimental studies and hydrodynamics and particle-in-cell simulations we investigate the role of the prepulse in laser proton acceleration. The prepulse or pedestal (amplified spontaneous emission) can completely evaporate the irradiated region of a sufficiently thin foil; therefore, the main part of the laser pulse interacts with an underdense plasma. The multiparametric particle-in-cell simulations demonstrate that the main pulse generates the quasistatic magnetic field, which in its turn produces the long-lived charge separation electrostatic field, accelerating the ions.
authors.affiliation: National Institute of Radiological Science, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Matsukado
authors.forename: T
authors.initials: T
authors.lastname: Esirkepov
authors.forename: K
authors.initials: K
authors.lastname: Kinoshita
authors.forename: H
authors.initials: H
authors.lastname: Daido
authors.forename: T
authors.initials: T
authors.lastname: Utsumi
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.forename: A
authors.initials: A
authors.lastname: Fukumi
authors.forename: Y
authors.initials: Y
authors.lastname: Hayashi
authors.forename: S
authors.initials: S
authors.lastname: Orimo
authors.forename: M
authors.initials: M
authors.lastname: Nishiuchi
authors.forename: S V
authors.initials: SV
authors.lastname: Bulanov
authors.forename: T
authors.initials: T
authors.lastname: Tajima
authors.forename: A
authors.initials: A
authors.lastname: Noda
authors.forename: Y
authors.initials: Y
authors.lastname: Iwashita
authors.forename: T
authors.initials: T
authors.lastname: Shirai
authors.forename: T
authors.initials: T
authors.lastname: Takeuchi
authors.forename: S
authors.initials: S
authors.lastname: Nakamura
authors.forename: A
authors.initials: A
authors.lastname: Yamazaki
authors.forename: M
authors.initials: M
authors.lastname: Ikegami
authors.forename: T
authors.initials: T
authors.lastname: Mihara
authors.forename: A
authors.initials: A
authors.lastname: Morita
authors.forename: M
authors.initials: M
authors.lastname: Uesaka
authors.forename: K
authors.initials: K
authors.lastname: Yoshii
authors.forename: T
authors.initials: T
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Hosokai
authors.forename: A
authors.initials: A
authors.lastname: Zhidkov
authors.forename: A
authors.initials: A
authors.lastname: Ogata
authors.forename: Y
authors.initials: Y
authors.lastname: Wada
authors.forename: T
authors.initials: T
authors.lastname: Kubota