Numerical investigation of the theta pinch in intrinsic indiumantimonide |
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Authors: | H Bruhns K Hübner |
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Institution: | 1. Institut für Angewandte Physik II, Universit?t Heidelberg, D-6900, Heidelberg, Fed. Rep. Germany
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Abstract: | The electron-hole plasma in intrinsic InSb at 300 K can be compressed by electric and magnetic fields. In the theta-pinch
configuration one applies, by a capacitor discharge over a one-winding coil around the sample, a magnetic field (0, 0,B
z), which induces an electric field (0,E
φ, 0); both fields cause the ambipolar motion (v
r, 0, 0) of the plasma. We describe the electron-hole plasma by means of a magnetohydrodynamical two-fluid model. The resulting
system of differential equations is solved numerically under the assumptions of scalar hydrodynamic pressure and field-independent
mobilities. The influence of the plasma properties on the theta pinch is studied as well as the dependence on the experimental
conditions like radius of the sample, maximum value and risetime of the magnetic field. |
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Keywords: | Indium antimonide Electron-hole plasma Theta pinch |
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