Experimental evidence for magnetorotational instability in a helical magnetic field

Details Experimental evidence for magnetorotational instability in a helical magnetic field Experimental evidence for magnetorotational instability in a helical magnetic field

2006-06-20

arxiv.org/abs/astro-ph/0606473v1

Phys.Rev.Lett. 97 (2006) 184502

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.184502

A recent paper [R. Hollerbach and G. Rudiger, Phys. Rev. Lett. 95, 124501 (2005)] has shown that the threshold for the onset of the magnetorotational instability (MRI) in a Taylor-Couette flow is dramatically reduced if both axial and azimuthal magnetic fields are imposed. In agreement with this prediction, we present results of a Taylor-Couette experiment with the liquid metal alloy GaInSn, showing evidence for the existence of the MRI at Reynolds numbers of order 1000 and Hartmann numbers of order 10.

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