Abstract
Kelvin-Helmholtz vortices and resultant turbulences are essential in many space and astrophysical
phenomena, as in transport of solar wind to Earth’s magnetosphere,1） and triggered star formation in
giant molecular clouds.2,3） However, while global images of astrophysical phenomena are obtained from
their emissions, local observations of physical quantities are inaccessible. Antithetically, although local
variables are obtained by direct measurements with spacecrafts, global structures are diffi cult to obtain
in solar-terrestrial phenomena. An alternative way to investigate space and astrophysical phenomena is
laboratory simulations; rapid growth of laser technologies allows us to model such phenomena in the
laboratories. 4‒7） Here we report the experimental results of turbulent electric fi eld driven by Kelvin-
Helmholtz instability associated with laser produced collisionless shock waves. Our results demonstrate
that laboratory experiments are capable to identify the shock electric fi eld and related instability. This
will provide us a complementary tool to investigate space and astrophysical phenomena.
