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Title: Plasma electron hole kinematics. II. Hole tracking Particle-In-Cell simulation

Abstract

The kinematics of a 1-D electron hole is studied using a novel Particle-In-Cell simulation code. A hole tracking technique enables us to follow the trajectory of a fast-moving solitary hole and study quantitatively hole acceleration and coupling to ions. We observe a transient at the initial stage of hole formation when the hole accelerates to several times the cold-ion sound speed. Artificially imposing slow ion speed changes on a fully formed hole causes its velocity to change even when the ion stream speed in the hole frame greatly exceeds the ion thermal speed, so there are no reflected ions. The behavior that we observe in numerical simulations agrees very well with our analytic theory of hole momentum conservation and the effects of “jetting.”.

Authors:
;  [1]
  1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
22599972
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; COMPUTERIZED SIMULATION; ELECTRONS; HOLES; IONS; PARTICLES; PLASMA; SOUND WAVES; STREAMS; TRAJECTORIES; TRANSIENTS; VELOCITY

Citation Formats

Zhou, C., and Hutchinson, I. H. Plasma electron hole kinematics. II. Hole tracking Particle-In-Cell simulation. United States: N. p., 2016. Web. doi:10.1063/1.4959871.
Zhou, C., & Hutchinson, I. H. Plasma electron hole kinematics. II. Hole tracking Particle-In-Cell simulation. United States. doi:10.1063/1.4959871.
Zhou, C., and Hutchinson, I. H. Mon . "Plasma electron hole kinematics. II. Hole tracking Particle-In-Cell simulation". United States. doi:10.1063/1.4959871.
@article{osti_22599972,
title = {Plasma electron hole kinematics. II. Hole tracking Particle-In-Cell simulation},
author = {Zhou, C. and Hutchinson, I. H.},
abstractNote = {The kinematics of a 1-D electron hole is studied using a novel Particle-In-Cell simulation code. A hole tracking technique enables us to follow the trajectory of a fast-moving solitary hole and study quantitatively hole acceleration and coupling to ions. We observe a transient at the initial stage of hole formation when the hole accelerates to several times the cold-ion sound speed. Artificially imposing slow ion speed changes on a fully formed hole causes its velocity to change even when the ion stream speed in the hole frame greatly exceeds the ion thermal speed, so there are no reflected ions. The behavior that we observe in numerical simulations agrees very well with our analytic theory of hole momentum conservation and the effects of “jetting.”.},
doi = {10.1063/1.4959871},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}