Long-scale jet formation with specularly reflected light in ultraintense laser-plasma interactions
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.
Kodama
R
Institute of Laser Engineering, Osaka University, Yamada Oka 2-6 Suita, Yamada Oka, Osaka 565-0871, Japan.
Tanaka
KA
Sentoku
Y
Matsushita
T
Takahashi
K
Fujita
H
Kitagawa
Y
Kato
Y
Yamanaka
T
Mima
K