| Autor: |
Wilhelm, Rolf, Zwicker, Hartmut |
| Zdroj: |
Zeitschrift für Physik; 1970, Vol. 240 Issue 4, p295-305, 11p |
| Abstrakt: |
High-β Deuterium plasmas in a temperature range of 0.1-1 keV were produced in the fast toroidal screw pinch experiment ISAR IV ( B≈33 kG, I≈100-150 kA, coil diameter 12 cm, aspect ratio 5). The experimentally determined growth rates of the appearing instabilities-especially the m=1 mode-are compared with two simple models and a more exact numerical calculation. This comparison and direct measurements of the magnetic field distribution show that the constant pitch model of Bobeldijk is a suitable first approximation for the normal screw pinch. Using a delay of the z and θ-bank as a first simple method of field programming this constant pitch profil could be varied in different directions. The results are discussed in more detail and confirm the theoretical picture of stability behaviour of the high-β screw pinch. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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