Periodic and turbulent behavior of solitary structures in distributed active media

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Abstract
In a dc gas-discharge system we observe experimentally periodic and turbulent behavior of solitary structures, the latter having the form of filaments. It can be shown that turbulence develops due to four kinds of fundamental interactions between the solitary structures: creation, annihilation, elastic reflection, and clustering. It is believed that the experimental results are of general importance for pattern formation in distributive active media.