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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Nonlin. Processes Geophys., 20, 581-588, 2013
https://doi.org/10.5194/npg-20-581-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
13 Aug 2013
Stable Langmuir solitons in plasma with diatomic ions
M. Dvornikov 1Institute of Physics, University of São Paulo, CP 66318, CEP 05315-970 São Paulo, SP, Brazil
2Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation (IZMIRAN), 142190 Moscow, Russia
Abstract. We study stable axially and spherically symmetric spatial solitons in plasma with diatomic ions. The stability of a soliton against collapse is provided by the interaction of induced electric dipole moments of ions with the rapidly oscillating electric field of a plasmoid. We derive the new cubic-quintic nonlinear Schrödinger equation, which governs the soliton dynamics and numerically solve it. Then we discuss the possibility of implementation of such plasmoids in realistic atmospheric plasma. In particular, we suggest that spherically symmetric Langmuir solitons, described in the present work, can be excited at the formation stage of long-lived atmospheric plasma structures. The implication of our model for the interpretation of the results of experiments for the plasmoids generation is discussed.

Citation: Dvornikov, M.: Stable Langmuir solitons in plasma with diatomic ions, Nonlin. Processes Geophys., 20, 581-588, https://doi.org/10.5194/npg-20-581-2013, 2013.
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