| Autor: |
Hiroe, S., Glowienka, J. C., Hillis, D. L., Wilgen, J. B., Chen, G. L., Cobble, J. A., El Nadi, A. M., Goyer, J. R., Solensten, L., Casson, W. H., Hankins, O. E., Quon, B. H. |
| Předmět: |
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| Zdroj: |
Physics of Fluids (00319171); Mar87, Vol. 30 Issue 3, p847, 10p |
| Abstrakt: |
In order to understand the relationships between confinement and space potential (electric field) and between confinement and density fluctuations, plasma parameters in the ELMO Bumpy Toms Scale (EBT-S) [in Plasma Physics and Controlled Nuclear Fusion Research (IAEA, Tokyo, 1974), Vol. 2, p. 141; Plasma Phys. 25, 597 (1983)] have been measured systematically for a wide range of operating conditions. Present EBT plasma parameters do not show a strong dependence on the potential profile, but rather exhibit a correlation with the fluctuations. The plasma pressure profile is found to be consistent with the profile anticipated on the basis of the flute stability criterion for a marginally stable plasma. For a heating power of 100 kW, the stored energy density is found to be restricted to the range between 4.5 × 10[sup 13] eV-cm[sup -3] and 7 × 10[sup 13] eV-cm[sup -3]. The lower limit remains constant regardless of heating power and pertains to plasmas lacking an equilibrium and/or stability. The upper limit increases with heating power and is found to result from the onset of instabilities. In between the two limits is a plasma that is in an equilibrium state and is marginally stable. Operational trajectories exist that take the EBT plasma from one limit to the other. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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