Abstract
A two-dimensional resistive magnetohydrodynamic (MHD) code is used to examine the stability of a Z pinch to m=0 perturbations under conditions of rising current. The current waveform is chosen to keep the unperturbed radius of the pinch constant in time. At low current the perturbations oscillate without growing, or grow only weakly, contrary to the predictions of ideal MHD theory. At high current, the perturbations grow at a rate consistent with ideal MHD. The point of transition can be described in terms of a critical Lundquist number; this increases with the wavelength of the perturbation, and is about 160 for ka=0.3, where k is the wavenumber and a is the pinch radius. These results may explain recent experimental observations of anomalously stable dense Z pinches.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
