TOWARD 2-PARAMETER STOCHASTIC RESONANCE - NUMERICAL STUDY OF THE PHOTOSENSITIVE BELOUSOV-ZHABOTINSKY REACTION IN A FLOW SYSTEM

A concept of two-parameter stochastic resonance (SR) is shown by using a model of the photosensitive Belousov-Zhabotinsky reaction in a flow system. Computational studies of a modified Oregonator model, which h as two experimentally controllable parameters (light intensity and flo w rate), indicate that a periodic signal in the flow rate is detected by noise in the light intensity or vice versa by the process of SR. Th is phenomenon, referred to as two-parameter SR, suggests that a period ic signal may be detected by noise from a different source instead of the same source which has been considered up to now in the framework o f SR.