Mills, RuthHole, MatthewDewar, Robert2015-12-070022-3778http://hdl.handle.net/1885/24768A unified energy principle approach is presented for analysing the magnetohydrodynamic (MHD) stability of plasmas consisting of multiple ideal and relaxed regions. The gauge a = ξ×B for the vector potential, a, of linearized perturbations is used, withKeywords: Beltrami equation; Beltrami fields; Cylindrical geometry; Energy principles; Euler-Lagrange equations; Even-parity; Field profile; Large solutions; Limit problem; Magnetic surfaces; Magnetohydrodynamic stability; Neighbourhood; Odd-parity; Phase-space plo200910.1017/S00223778090080952016-02-24