Experimental evidence for a torus breakdown in a glow discharge plasma.
A global bifurcation scenario for a two-frequency torus breakdown depicted by Baptista and Caldas [Physica D 132, 325 (1999)] is observed on a glow-discharge experiment. The torus is broken through a crisis with an unstable periodic orbit. The torus section before the bifurcation is a sided polygon that has a number of edges equal to the period of the unstable orbit. Since the discharge is an extended system the two-frequency torus breakdown is shown to be a possible way to space-time chaos.
Letellier
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CORIA UMR 6614, Université de Rouen, Place Emile Blondel, F-76821 Mont Saint-Aignan Cedex, France.
Dinklage
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El-Naggar
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Wilke
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Bonhomme
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