Laboratory observation of multiple double layer resembling space plasma double layer

Perceptible double layer consisting of more than one layers were produced in laboratory using a double discharge plasma setup. The confinement of oppositely charged particles in each layer with sharply defined luminous boarder is attributed to the self-organization scenario. This structure is generated in front of a positively biased electrode when the electron drift velocity ($\nu_{\mathrm{d}})$ exceeds 1.3 times the electron thermal velocity ($\nu_{\mathrm{te}})$. Stable multiple double layer structures were observed only between 1.3 $\nu_{\mathrm{te}} \quad \le \quad \nu _{\mathrm{d}} \quad \le $ 3 $\nu_{\mathrm{te}}$. At $\nu _{\mathrm{d}}=$1.3 $\nu_{\mathrm{te}}$, oscillations were excited in the form of large amplitude burst followed by a high frequency stable oscillation. Beyond $\nu_{\mathrm{d}}=$3 $\nu_{\mathrm{te}}$, multiple double layer begins to collapse which is characterized by an emergence in turbulence. Long range dependence in the corresponding electrostatic potential fluctuations indicates the role of self-organized criticality in the emergence of turbulence. The algebraic decaying tale of the autocorrelation function and power law behavior in the power spectrum are consistent with the observation.