Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Nonlocal Ponderomotive Force in a Super Gaussian Laser Beam and the Conditions for Long Time Scale Interaction
Natsumi IWATAYasuaki KISHIMOTO
Author information
JOURNALS FREE ACCESS

2013 Volume 8 Pages 1201160

Details
Abstract

We have applied the theory of the nonlocal ponderomotive force which we derived recently using the noncanonical Lie perturbation approach to investigate a long time scale particle motion in a super Gaussian laser beam. In such a flat-top beam profile, the local field gradient is diminished near the axis, so that the conventional ponderomotive formula is hardly applied. Numerical analyses of the interaction time and its dependence on the initial position and momentum of particles show that the nonlocal effect of the ponderomotive force, which is associated with higher order spatial derivatives, regulates the dynamics predominantly and sensitively.

Information related to the author
© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
Previous article Next article
feedback
Top