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SYLF: Symposium Wechselwirkung in starken Laserfeldern
SYLF 6: Poster
SYLF 6.3: Poster
Tuesday, March 16, 1999, 17:30–18:30, zo1
Magnetized Transport of Laser Driven Ultra-High Currents — •Mitsuru Honda, Jürgen Meyer-ter-Vehn, and Alexander Pukhov — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching
Magnetized transport of laser driven ultra-high currents
(1012−14A/cm2
): filamentation and coalescence
of relativistic electron beams have been investigated by
using a 2D3V particle-in-cell (PIC) code VLPL (Virtual
Laser Plasma Laboratory) [Bull. Am. Phys. Soc. 41, 1502
(1996)]-Upgrade coupled with fully relativistic binary collisions.
It is found that the collisional effects enhance the filamentation
of beams in the linear growth region of the electromagnetic
instabilities as consistent with the perturbation analysis.
The pinching of beam is enhanced by ion motions.
The self-generated magnetic fields do not only confine
the fractional charge neutral ions within the beam columns,
but also spread the return current sheaths, namely,
the coaxial electron beam sustained by charge neutral ions
are constructed as a fully developed nonlinear structure.
The stopping power of beam is significantly enhanced by the
collisional effects.