Effects of Synchronization and Switching off Chemical Self-Oscillations upon Periodic Exposure to Light

Abstract

The effect of synchronization of chemical concentration self-oscillations of the Briggs–Rauscher reaction under the periodic external effect of white light was studied. The change in the frequency of concentration oscillations outside the synchronization band was revealed under external exposure to light with a modulation frequency from 0.029 to 0.039 Hz before synchronization and from 0.1 to 0.14 Hz after it. The dependence of the synchronization band on the power is demonstrated, and the limiting values of the external light power at that self-oscillations are “turned off” are found. The synchronization range of concentration oscillations was revealed under external light exposure with a modulation frequency in the range of 0.04–0.1 Hz. When the light flux from a light source exceeds 5000 lm, the self-oscillation process is turned off.