Tilting mode stability of spheromak = 스페로막의 틸팅모우드 안정성

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We analyze the fixed boundary tilting mode stability for a force-free spheromak in spherical and cylindrical geometries. For this purpose we follow Rosenbluth and Bussac who introduce two methods, one is by the $\delta_\mu$, the change of an energy eigenvalue, another is the $\delta$W method by computing $\delta W_{MHD}$ with the arbitary shaped cross sections. We fined that the first method by $\delta_{\mu}$ is inadequate for the determination of stability, while the 2nd method gives the correct results, namely that the oblate spheromak is essential for tilting mode stability. The inadequacy of the $\delta_{\mu}$ method is demonstrated by using various forms of boundaries. In cylindrical geometry we also find that a convex shaped cross section is better than a concave form against this tilting mode.
Advisors
Choi, Duk-In최덕인
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
1983
Identifier
63653/325007 / 000811260
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 1983.2, [ [ii], 39 p. ]

URI
http://hdl.handle.net/10203/48035
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=63653&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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