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Predicting the statistics of realistic wave-chaotic scattering systemsrequires, in addition to random matrix theory, introduction of system-specificinformation. This paper investigates experimentally one aspect ofsystem-specific behavior, namely the effects of short ray trajectories inwave-chaotic systems open to outside scattering channels. In particular, weconsider ray trajectories of limited length that enter a scattering regionthrough a channel (port) and subsequently exit through a channel (port). Weshow that a suitably averaged value of the impedance can be computed from thesetrajectories and that this can improve the ability to describe the statisticalproperties of the scattering systems. We illustrate and test these pointsthrough experiments on a realistic two-port microwave scattering billiard.

Experimental Examination of the Effect of Short Ray Trajectories in Two-port Wave-Chaotic Scattering Systems