Abstract:
Experimental tests are presented of universal predictions of the circle map for the response of driven nonlinear oscillators, using a spatio-temporal instability associated with impurity impact ionization in liquid He cooled p-type Ge. Both the measured power spectrum and the spectrum of dimensions f (α) for drive at the critical amplitude for winding number equal to the golden mean are found to be in quantitative agreement with theory. © 1987.
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