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Summary: Experimental examination of the effect of short ray trajectories in two-port wave-chaotic
scattering systems
Jen-Hao Yeh,1
James A. Hart,1,2
Elliott Bradshaw,2
Thomas M. Antonsen,1,2
Edward Ott,1,2
and Steven M. Anlage1,2
1
Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742-3285, USA
2
Physics Department, University of Maryland, College Park, Maryland 20742-4111, USA
Received 15 June 2010; revised manuscript received 30 August 2010; published 14 October 2010
Predicting the statistics of realistic wave-chaotic scattering systems requires, in addition to random matrix
theory, introduction of system-specific information. This paper investigates experimentally one aspect of
system-specific behavior, namely, the effects of short ray trajectories in wave-chaotic systems open to outside
scattering channels. In particular, we consider ray trajectories of limited length that enter a scattering region
through a channel port and subsequently exit through a channel port . We show that a suitably averaged
value of the impedance can be computed from these trajectories and that this can improve the ability to
describe the statistical properties of the scattering systems. We illustrate and test these points through experi-
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