Stochastic resonance effects in the scattering of neutrons by modulated two-state systems

Recent work indicates that the stochastic resonance phenomenon (SR) can hav e a strong signature in the neutron scattering cross section. Here we consi der neutron scattering by a sample containing a random distribution of bist able scattering centres. The robustness of the stochastic resonance signal is tested by performing suitable configurational averages over the potentia l parameters. By showing that the resonant line is not significantly weaken ed by the randomness, our results suggest that SR should be observable in a real glass. (C) 2000 Elsevier Science B.V. All rights reserved.