Nonlinear response of radon and its progeny in spring emission

Temporal fluctuations of Rn-222 and Po-218 emanated from a thermal spring have been investigated. Nonlinear statistical approach has been employed to the time sequences as to bring out the ingrained structure of the experimental data and the underlying mechanism therein. It is observed that the irregular time series are nonrandom and consistent with the nonlinear process. In addition, our findings reveal that the experimental time dependent data bears the signature of chaotic traits.