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Order-to-disorder transitions in the dynamics of a biharmonically-perturbed plasma double layer

D. ALEXANDROAEI1,* , C. STAN2, C. P. CRISTESCU2

Affiliation

  1. Department of Plasma Physics, “Al. I. Cuza” University of Iassy, RO-700506, Iassy, Romania
  2. Department of Physics I, “Politehnica” University of Bucharest, 313 Spl. Independentei, RO-060042, Bucharest, Romania

Abstract

In this paper we present new experimental results on the biharmonic forcing of double layers (DLs) formed in the plasma generated in the contact region of two coupled glow discharges. We analyze the effect of a biharmonic perturbation on the DL dynamics. States which result following different transitions as order-to-disorder or order-to-order due to this type of perturbation are investigated and their characteristics are studied. Appearance of low frequencies in the subharmonics domain of the spectral response, so-called ghost or vibrational resonances, is observed..

Keywords

Chaotic sates, Biharmonic forcing, Vibrational resonance, Ghost resonance, Discharge plasma double layers.

Submitted at: March 1, 2008
Accepted at: July 10, 2008

Citation

D. ALEXANDROAEI, C. STAN, C. P. CRISTESCU, Order-to-disorder transitions in the dynamics of a biharmonically-perturbed plasma double layer, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 8, pp. 1954-1957 (2008)