Crisis-induced intermittency in a third-order electrical circuit

We study the transition from a spiral to a double-scroll attractor in a canonical circuit realization of a third-order electrical circuit (Chua circuit) family as a control parameter ${\mathit{p}}_{\mathit{c}}$ (capacitance, ${\mathit{C}}_2$) is varied. A sudden widening of the chaotic attractor is observed during this transition, meaning a crisis-induced intermittency. The dependence of the characteristic time τ on the system control parameter has the well-known exponential form τ∼‖p-${\mathit{p}}_{\mathit{c}}$ ${\mathrm{\Vert }}^{\mathrm{-}\gamma }$ for p close to the critical value ${\mathit{p}}_{\mathit{c}}$, the critical exponent γ having a value of 0.5016.