Stationary Vortex Arrays
DOI: 10.1063/1.3268839
Take a good look at these photographs; eventually they will probably be in many textbooks. These photographs represent visual evidence for macroscopic quantization in rotating supertluid helium and are the latest in a series of experiments by Richard Packard and his collaborators at the University of California, Berkeley. E. J. Yarmchuk, M. J. V. Gordon and Packard recently published these pictures in Phys. Rev. Lett. 43, 214 (1979). These patterns display the model structure of the stationary states of a single macroscopic wave function describing superfluidity.