Interchange stability of non-circular reversed field pinches

D. A. Skinner; S. C. Prager; A. M.M. Todd

doi:10.1088/0029-5515/28/2/012

Interchange stability of non-circular reversed field pinches

D. A. Skinner, S. C. Prager, A. M.M. Todd

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

He interchange (Mercier) stability of toroidal reversed field pinch plasmas with non-circular cross-section has been evaluated numerically. Marginally stable pressure profiles and beta values have been produced. Most shapes, such as indented or vertically elongated, reduce the stability by making the net magnetic curvature of the poloidal field dominated plasmas yet worse than that of circular configurations. The stability of horizontally elongated plasmas is slightly enhanced compared with that of circular plasmas as a result of increased shear produced by toroidicity. This shear enhancement by toroidal shift of magnetic surfaces might be exploited in future, more comprehensive studies.

Original language	English (US)
Pages (from-to)	306-311
Number of pages	6
Journal	Nuclear Fusion
Volume	28
Issue number	2
DOIs	https://doi.org/10.1088/0029-5515/28/2/012
State	Published - Feb 1988

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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title = "Interchange stability of non-circular reversed field pinches",

abstract = "He interchange (Mercier) stability of toroidal reversed field pinch plasmas with non-circular cross-section has been evaluated numerically. Marginally stable pressure profiles and beta values have been produced. Most shapes, such as indented or vertically elongated, reduce the stability by making the net magnetic curvature of the poloidal field dominated plasmas yet worse than that of circular configurations. The stability of horizontally elongated plasmas is slightly enhanced compared with that of circular plasmas as a result of increased shear produced by toroidicity. This shear enhancement by toroidal shift of magnetic surfaces might be exploited in future, more comprehensive studies.",

author = "Skinner, {D. A.} and Prager, {S. C.} and Todd, {A. M.M.}",

year = "1988",

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pages = "306--311",

journal = "Nuclear Fusion",

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T1 - Interchange stability of non-circular reversed field pinches

AU - Skinner, D. A.

AU - Prager, S. C.

AU - Todd, A. M.M.

PY - 1988/2

Y1 - 1988/2

N2 - He interchange (Mercier) stability of toroidal reversed field pinch plasmas with non-circular cross-section has been evaluated numerically. Marginally stable pressure profiles and beta values have been produced. Most shapes, such as indented or vertically elongated, reduce the stability by making the net magnetic curvature of the poloidal field dominated plasmas yet worse than that of circular configurations. The stability of horizontally elongated plasmas is slightly enhanced compared with that of circular plasmas as a result of increased shear produced by toroidicity. This shear enhancement by toroidal shift of magnetic surfaces might be exploited in future, more comprehensive studies.

AB - He interchange (Mercier) stability of toroidal reversed field pinch plasmas with non-circular cross-section has been evaluated numerically. Marginally stable pressure profiles and beta values have been produced. Most shapes, such as indented or vertically elongated, reduce the stability by making the net magnetic curvature of the poloidal field dominated plasmas yet worse than that of circular configurations. The stability of horizontally elongated plasmas is slightly enhanced compared with that of circular plasmas as a result of increased shear produced by toroidicity. This shear enhancement by toroidal shift of magnetic surfaces might be exploited in future, more comprehensive studies.

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VL - 28

SP - 306

EP - 311

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 2

ER -

Interchange stability of non-circular reversed field pinches

Abstract

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