It is shown that point dipoles in a superfluid obeying the Landau dispersion relation for rotons can form stable bound states. Structure is added to the roton model by adding the octupole moment appropriate to a vortex ring. The binding energy is then computed to be 0.337°K. Scattering appears to be satisfactorily accounted for by the dipole approximation. © 1973.
CITATION STYLE
Mahrenholtz, O., & Hendricks, S. L. (1986). Dynamics of Rotors—Stability and System Identification. Journal of Applied Mechanics, 53(2), 477–478. https://doi.org/10.1115/1.3171794
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