Self-similar evolution of nonlinear magnetic bouyancy instability
Technical Report
·
OSTI ID:7123707
A new type of self-similar solution of ideal magnetohydrodynamics in the nonlinear stage of undular mode (k /parallel/ B) of magnetic buoyancy instability (Parker instability or ballooning instability) is found through MHD simulation and theory. The solution has the characteristics of nonlinear instability in Lagrangian coordinates; the fluid velocity and the Alfven speed on each magnetic loop increases exponentially with time, because the loop is evacuated by the field aligned motion of matter due to gravitational acceleration. 10 refs., 3 figs., 1 tab.
- Research Organization:
- Texas Univ., Austin (USA). Inst. for Fusion Studies; Kyoto Univ. (Japan)
- DOE Contract Number:
- FG05-80ET53088
- OSTI ID:
- 7123707
- Report Number(s):
- DOE/ET/53088-322; IFSR-322; ON: DE88015534
- Country of Publication:
- United States
- Language:
- English
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