Nonlocal Ponderomotive Force in a Super Gaussian Laser Beam and the Conditions for Long Time Scale Interaction

• IWATA Natsumi

  Graduate School of Energy Science, Kyoto University

• KISHIMOTO Yasuaki

  Graduate School of Energy Science, Kyoto University Institute of Advanced Energy, Kyoto University

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.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 1201160-1201160, 2013

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• ponderomotive force
• nonlocal effect
• super Gaussian laser beam
• noncanonical Lie perturbation method

Details

• CRID: 1390282680231280000
• NII Article ID: 130003392932
• DOI: 10.1585/pfr.8.1201160
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_1201160/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed