# WHISTLER TURBULENCE FORWARD CASCADE VERSUS INVERSE CASCADE: THREE-DIMENSIONAL PARTICLE-IN-CELL SIMULATIONS

## Abstract

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 β {sub e} = 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:

- Oracle Corporation, Redwood Shores, CA (United States)
- Space Science Institute, Boulder, CO (United States)
- University of Southern California, Los Angeles, CA (United States)

- Publication Date:

- OSTI Identifier:
- 22364167

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Astrophysical Journal; Journal Volume: 800; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; COLLISIONLESS PLASMA; COMPUTERIZED SIMULATION; FLUCTUATIONS; SOLAR ELECTRONS; SOLAR WIND; THREE-DIMENSIONAL CALCULATIONS; TURBULENCE; WAVELENGTHS; WHISTLER INSTABILITY; WHISTLERS

### Citation Formats

```
Chang, Ouliang, Gary, S. Peter, and Wang, Joseph, E-mail: ouliang@usc.edu, E-mail: pgary@lanl.gov, E-mail: josephjw@usc.edu.
```*WHISTLER TURBULENCE FORWARD CASCADE VERSUS INVERSE CASCADE: THREE-DIMENSIONAL PARTICLE-IN-CELL SIMULATIONS*. United States: N. p., 2015.
Web. doi:10.1088/0004-637X/800/2/87.

```
Chang, Ouliang, Gary, S. Peter, & Wang, Joseph, E-mail: ouliang@usc.edu, E-mail: pgary@lanl.gov, E-mail: josephjw@usc.edu.
```*WHISTLER TURBULENCE FORWARD CASCADE VERSUS INVERSE CASCADE: THREE-DIMENSIONAL PARTICLE-IN-CELL SIMULATIONS*. United States. doi:10.1088/0004-637X/800/2/87.

```
Chang, Ouliang, Gary, S. Peter, and Wang, Joseph, E-mail: ouliang@usc.edu, E-mail: pgary@lanl.gov, E-mail: josephjw@usc.edu. Fri .
"WHISTLER TURBULENCE FORWARD CASCADE VERSUS INVERSE CASCADE: THREE-DIMENSIONAL PARTICLE-IN-CELL SIMULATIONS". United States.
doi:10.1088/0004-637X/800/2/87.
```

```
@article{osti_22364167,
```

title = {WHISTLER TURBULENCE FORWARD CASCADE VERSUS INVERSE CASCADE: THREE-DIMENSIONAL PARTICLE-IN-CELL SIMULATIONS},

author = {Chang, Ouliang and Gary, S. Peter and Wang, Joseph, E-mail: ouliang@usc.edu, E-mail: pgary@lanl.gov, E-mail: josephjw@usc.edu},

abstractNote = {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 β {sub e} = 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.},

doi = {10.1088/0004-637X/800/2/87},

journal = {Astrophysical Journal},

number = 2,

volume = 800,

place = {United States},

year = {Fri Feb 20 00:00:00 EST 2015},

month = {Fri Feb 20 00:00:00 EST 2015}

}

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