Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 111, Issue -, Pages 4707-4710Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1312536110
Keywords
topological defects; turbulence; cascade
Categories
Funding
- National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1407472] Funding Source: National Science Foundation
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Quantized vortices are key features of quantum fluids such as superfluid helium and Bose-Einstein condensates. The reconnection of quantized vortices and subsequent emission of Kelvin waves along the vortices are thought to be central to dissipation in such systems. By visualizing the motion of submicron particles dispersed in superfluid He-4, we have directly observed the emission of Kelvin waves from quantized vortex reconnection. We characterize one event in detail, using dimensionless similarity coordinates, and compare it with several theories. Finally, we give evidence for other examples of wavelike behavior in our system.
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