Abstract
Collapsing wave packets (“collapsons”) found in 3D simulations of strong Langmuir turbulence contain structure in the Langmuir-wave angular-momentum density, which often displays well-defined characteristic patterns such as rings. A model collapson electrostatic potential is constructed as a superposition of approximate eigenstates of a spherically symmetric density well. A potential containing only components with angular quantum number l = 0 and l = 1 is found to reproduce many of the angular-momentum structures observed in the turbulence simulations. In addition, this model potential predicts the observed predominance of collapsons with oblate surfaces of constant field strength.
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