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Spontaneous splitting of a quadruply charged vortex
T Isoshima1, M Okano, H Yasuda
1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Physical Review Letters
|February 1, 2008
Summary
We observed a quadruply charged vortex splitting into four singly charged vortices. This spontaneous splitting occurs due to the vortex core
Area of Science:
- Physics
- Fluid Dynamics
- Vortex Dynamics
Background:
- Vortices are fundamental in fluid dynamics.
- Understanding vortex instability is key to predicting fluid behavior.
- Quadruply charged vortices present complex dynamic behaviors.
Purpose of the Study:
- Investigate the splitting instability of a quadruply charged vortex.
- Analyze the transition from a single defect to multiple vortices.
- Examine the dynamics of the resulting vortex array.
Main Methods:
- Experimental observation of vortex core deformation.
- Theoretical modeling of vortex splitting.
- Analysis of vortex rotation and precession.
Main Results:
- The quadruply charged vortex core's density defect deformed into a linear shape.
- Experimentally observed deformation was theoretically confirmed as an array of four singly charged vortices.
- The vortex array exhibited simultaneous rotation and precession at different angular velocities.
Conclusions:
- The study elucidates the splitting mechanism of a quadruply charged vortex.
- Non-symmetric initial states can trigger spontaneous vortex splitting.
- The resulting array of vortices displays complex, coupled rotational and precessional motion.
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