Vortex single-celled

Barcilon Brindley, Lessen Mobbs (24) (radius ratio 0.908, r= 65) reported the disappearance of cell boundary waves at T/t = 445, but waviness continued in the interior of the vortex cells. Haji Hassan (25) showed the corresponding spectra to contain two frequencies of high power, in addition to a complex of weak frequencies. ohe two frequencies ranained up to i/t = 2500 and then disappeared. A single frequency re-emerged in the range T/T = 6000 to 60,000, the limit of the experiments. A distinctive Taylor vortex structure remained tliroughout. 

Fig. 26. Parameters describing diffraction from vortex lattice in superconducting UPtj as a function of field H applied along a, (a) Internal field deduced from the unit cell size. The line with slope unity is expected for singly quantized vortices, (b) Crystallographic angle a defined in the inset. For a conventional hexagonal lattice, a = 30°. (c) Scattering length, in magnetic field units, for the (1,0) Bragg reflection from the vortex lattice. (From Klerman ct al. 1992.)...

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