title: Long-scale jet formation with specularly reflected light in ultraintense laser-plasma interactions
abstract: Long-scale jetlike x-ray emission was observed in a 100-TW laser-plasma interaction. The jet was well collimated with a divergence of 30-40 mrad and continued from the target surface into underdense regions for a distance over 4 mm in the specular direction of the laser light. A two-dimensional particle-in-cell simulation shows an electron acceleration with the specularly reflected laser light and collimation of the electron stream by a self-generated magnetic field, resulting in the electron jet to the direction of the specularly reflected light.
authors.affiliation: Institute of Laser Engineering, Osaka University, Yamada Oka 2-6 Suita, Yamada Oka, Osaka 565-0871, Japan.
authors.initials: R
authors.lastname: Kodama
authors.initials: KA
authors.lastname: Tanaka
authors.initials: Y
authors.lastname: Sentoku
authors.initials: T
authors.lastname: Matsushita
authors.initials: K
authors.lastname: Takahashi
authors.initials: H
authors.lastname: Fujita
authors.initials: Y
authors.lastname: Kitagawa
authors.initials: Y
authors.lastname: Kato
authors.initials: T
authors.lastname: Yamanaka
authors.initials: K
authors.lastname: Mima