Author:
REITSMA A.J.W.,JAROSZYNSKI D.A.
Abstract
The acceleration dynamics of electrons in a laser wakefield
accelerator is discussed, in particular the coupling of longitudinal
and transverse motion. This coupling effect is important for electrons
injected with a velocity below the laser pulse group velocity. It is
found that the electron bunch is adiabatically focused during the
acceleration and that a finite bunch width contributes to bunch
lengthening and growth of energy spread. These results indicate the
importance of a small emittance for the injected electron bunch.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
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