skip to main content

DOE PAGESDOE PAGES

Title: Whistler turbulence forward vs. inverse cascade. Three-dimensional particle-in-cell simulations

In this study, we present the results of the first fully three-dimensional particle-in-cell simulations of decaying whistler turbulence in a magnetized, homogeneous, collisionless plasma in which both forward cascades to shorter wavelengths, and inverse cascades to longer wavelengths are allowed to proceed. For the electron beta βe = 0.10 initial value considered here, the early-time rate of inverse cascade is very much smaller than the rate of forward cascade, so that at late times the fluctuation energy in the regime of the inverse cascade is much weaker than that in the forward cascade regime. Similarly, the wavevector anisotropy in the inverse cascade regime is much weaker than that in the forward cascade regime.
Authors:
 [1] ;  [2] ;  [3]
  1. Oracle Corp., Redwood Shores, CA (United States)
  2. Space Science Institute, Boulder, CO (United States)
  3. Univ. of Southern California, Los Angeles, CA (United States)
Publication Date:
OSTI Identifier:
1165180
Report Number(s):
LA-UR--14-29236
Journal ID: ISSN 1538-4357; TRN: US1600666
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 800; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org:
National Science Foundation, Arlington, VA (United States)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY heliospheric and magnetospheric physics; whistler turbulence