Dynamics of a double layer formed in the transition region between two negative plasma glows

Modelling of the Temporal Behaviour of the Inter-Anode Current in a System of Two Coupled Electrical Discharges

“…Simultaneously with the current oscillations, changes of patterns of the luminous structures can be observed at the contact region between the two discharges [10].…”

“…We interpret this as reflecting a new oscillatory phenomenon connected to the onset of a moving phase of the SCC. It is experimentally demonstrated that the moving phase appears when the potential drop over the DL equals the ionisation potential of the working gas [12], [13]. The frequency of the additional oscillations is very close to the first harmonic of the fundamental frequency of the DL.…”

“…Experimental investigations of the current-voltage characteristics, I 12 versus U 12 , correlated with plasma potential and light intensity distributions, which reveal the formation of DL's, are extensively presented in [11], [13]. It is also shown that for values of the DL potential drop larger than the ionisation potential of the working gas, the structure becomes unstable and the current I 12 (from now on simply denoted I) has periodical oscillations.…”

“…In the last few years, the dynamical features of SCC's have been studied mainly in terms of self-organisation scenarios [9], [10], [11]. The discharge current, considered as a global parameter, reflects the periodic formation and disruption of two or more SCC's, the processes during the first disruption stage serving as a triggering mechanism for the dynamics of the next [12], [13], [14].…”

“…The discharge current, considered as a global parameter, reflects the periodic formation and disruption of two or more SCC's, the processes during the first disruption stage serving as a triggering mechanism for the dynamics of the next [12], [13], [14].…”