# Annihilation model of the Tormac sheath

## Abstract

A one-dimensional, steady state fluid model is developed to describe the boundary layer between plasma and magnetic field that occurs in the Tormac sheath. Similar systems which may be treatable by the same model are tokamaks with divertors and reversed field mirrors. The model includes transport across the magnetic field as well as mirror losses along the field, the latter being represented as annihilation terms in the one-dimensional equations. The model equations are derived from the two-dimensional, time dependent hierarchy of equations generated by taking velocity moments of the kinetic equation including collisions.

- Authors:

- Publication Date:

- Research Org.:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.

- OSTI Identifier:
- 6245912

- Report Number(s):
- LBL-8748

TRN: 79-016731

- DOE Contract Number:
- W-7405-ENG-48

- Resource Type:
- Technical Report

- Resource Relation:
- Other Information: Thesis

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TORMAC DEVICES; BOUNDARY LAYERS; MATHEMATICAL MODELS; DIVERTORS; MAGNETIC FIELD REVERSAL; MAGNETIC MIRRORS; NONLINEAR PROBLEMS; ONE-DIMENSIONAL CALCULATIONS; PLASMA SHEATH; TOKAMAK DEVICES; CLOSED PLASMA DEVICES; LAYERS; MAGNETIC FIELDS; OPEN PLASMA DEVICES; THERMONUCLEAR DEVICES; 700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)

### Citation Formats

```
Hammer, J.H.
```*Annihilation model of the Tormac sheath*. United States: N. p., 1979.
Web. doi:10.2172/6245912.

```
Hammer, J.H.
```*Annihilation model of the Tormac sheath*. United States. doi:10.2172/6245912.

```
Hammer, J.H. Thu .
"Annihilation model of the Tormac sheath". United States. doi:10.2172/6245912. https://www.osti.gov/servlets/purl/6245912.
```

```
@article{osti_6245912,
```

title = {Annihilation model of the Tormac sheath},

author = {Hammer, J.H.},

abstractNote = {A one-dimensional, steady state fluid model is developed to describe the boundary layer between plasma and magnetic field that occurs in the Tormac sheath. Similar systems which may be treatable by the same model are tokamaks with divertors and reversed field mirrors. The model includes transport across the magnetic field as well as mirror losses along the field, the latter being represented as annihilation terms in the one-dimensional equations. The model equations are derived from the two-dimensional, time dependent hierarchy of equations generated by taking velocity moments of the kinetic equation including collisions.},

doi = {10.2172/6245912},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1979},

month = {2}

}

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