Feasibility of large-{beta} tokamak stability to ballooning modes due to nonmonotonic q-profiles
Journal Article
·
· Plasma Physics Reports
OSTI ID:258459
- Kurchatov Institute Russian Research Centre, Moscow (Russian Federation)
The stability of high-temperature nondissipative plasmas to the flute instability ballooning modes in tokamak-like toroidal configurations is investigated at high plasma pressures. The analytical criterion of ballooning-mode stability at large toroidal numbers, discovered by O.P. Pogutse and E.I. Yurchenko, is used for stability assessment. In contrast to systems with monotonic safety-factor q-profiles, nonmonotonic q-profile systems are found to allow a considerable increase in the critical plasma pressure, provided that the pressure profile is properly chosen. The most preferred pressure profiles prove to be the peaked profiles. 13 refs., 12 figs., 5 tabs.
- OSTI ID:
- 258459
- Journal Information:
- Plasma Physics Reports, Vol. 20, Issue 12; Other Information: PBD: Dec 1994; TN: Translated from Fizika Plazmy; 20: No. 12, 1043-1050(1994)
- Country of Publication:
- United States
- Language:
- English
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