Chaotic scattering in the regime of weakly overlapping resonances.
We measure the transmission and reflection amplitudes of microwaves in a resonator coupled to two antennas at room temperature in the regime of weakly overlapping resonances and in a frequency range of 3-16GHz . Below 10.1GHz the resonator simulates a chaotic quantum system. The distribution of the elements of the scattering matrix S is not Gaussian. The Fourier coefficients of S are used for a best fit of the autocorrelation function of S to a theoretical expression based on random-matrix theory. We find very good agreement below but not above 10.1GHz .
Dietz
B
B
Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.
Friedrich
T
T
Harney
H L
HL
Miski-Oglu
M
M
Richter
A
A
Schäfer
F
F
Weidenmüller
H A
HA