# Modelling of drift wave turbulence with a finite ion temperature gradient

## Abstract

With the use of consistent orderings in {var epsilon} = {rho}{sub s}/a and {delta} = k{sub {perpendicular}}{rho}{sub s} model equations are derived for the drift instabilities from the electrostatic two-fluid equations. The electrical resistivity {eta} included in the system allows the dynamics of both the collisional drift wave instability ({eta} {ne} 0) and the collisionless ion temperature gradient driven instability ({eta} = 0). The model equations used extensively in earlier nonlinear studies are obtained as appropriate limits of the model equations derived in the present work. The effects of sheared velocity flows in the equilibrium plasma and electron temperature fluctuations are also discussed. 14 refs.

- Authors:

- Publication Date:

- Research Org.:
- Texas Univ., Austin, TX (USA). Inst. for Fusion Studies

- Sponsoring Org.:
- DOE/ER

- OSTI Identifier:
- 6358300

- Report Number(s):
- DOE/ET/53088-462; IFSR-462

ON: DE91004301; TRN: 91-000082

- DOE Contract Number:
- FG05-80ET53088

- Resource Type:
- Technical Report

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA DRIFT; MATHEMATICAL MODELS; PLASMA WAVES; TURBULENCE; COLLISIONLESS PLASMA; DISPERSION RELATIONS; DRIFT INSTABILITY; ELECTRIC CONDUCTIVITY; ELECTRON TEMPERATURE; FLUCTUATIONS; ION TEMPERATURE; KINETIC EQUATIONS; MAGNETIC FIELDS; SHEAR; TEMPERATURE GRADIENTS; ELECTRICAL PROPERTIES; EQUATIONS; INSTABILITY; PHYSICAL PROPERTIES; PLASMA; PLASMA INSTABILITY; PLASMA MICROINSTABILITIES; VARIATIONS; 700103* - Fusion Energy- Plasma Research- Kinetics; 700108 - Fusion Energy- Plasma Research- Wave Phenomena; 700107 - Fusion Energy- Plasma Research- Instabilities

### Citation Formats

```
Hamaguchi, S, and Horton, W.
```*Modelling of drift wave turbulence with a finite ion temperature gradient*. United States: N. p., 1990.
Web. doi:10.2172/6358300.

```
Hamaguchi, S, & Horton, W.
```*Modelling of drift wave turbulence with a finite ion temperature gradient*. United States. https://doi.org/10.2172/6358300

```
Hamaguchi, S, and Horton, W. Mon .
"Modelling of drift wave turbulence with a finite ion temperature gradient". United States. https://doi.org/10.2172/6358300. https://www.osti.gov/servlets/purl/6358300.
```

```
@article{osti_6358300,
```

title = {Modelling of drift wave turbulence with a finite ion temperature gradient},

author = {Hamaguchi, S and Horton, W},

abstractNote = {With the use of consistent orderings in {var epsilon} = {rho}{sub s}/a and {delta} = k{sub {perpendicular}}{rho}{sub s} model equations are derived for the drift instabilities from the electrostatic two-fluid equations. The electrical resistivity {eta} included in the system allows the dynamics of both the collisional drift wave instability ({eta} {ne} 0) and the collisionless ion temperature gradient driven instability ({eta} = 0). The model equations used extensively in earlier nonlinear studies are obtained as appropriate limits of the model equations derived in the present work. The effects of sheared velocity flows in the equilibrium plasma and electron temperature fluctuations are also discussed. 14 refs.},

doi = {10.2172/6358300},

url = {https://www.osti.gov/biblio/6358300},
journal = {},

number = ,

volume = ,

place = {United States},

year = {1990},

month = {10}

}

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