A. V. Reshetnikov, V. I. Sannikov, V. N. Skokov, V. P. Koverda, “Arc current fluctuation power spectra in the system of a solid metal electrode and carbonate melt”, Prikl. Mekh. Tekh. Fiz., 2007, Volume 48, Issue 1,Pages <nobr>11

Arc current fluctuation power spectra in the system of a solid metal electrode and carbonate melt

A. V. Reshetnikov^a, V. I. Sannikov^b, V. N. Skokov^a, V. P. Koverda^a

^a Institute of Thermal Physics, Ural Division, Russian Academy of Sciences, Ekaterinburg, 620016
^b Bitek Company, Ekaterinburg, 620137

Abstract: Arc current fluctuations between a solid metal electrode and a liquid melt of alkaline carbonates at atmospheric pressure are measured. Arc current fluctuation power spectra are determined from the measurement data. It is shown that the fluctuation power is inversely proportional to the frequency ($1/f$-fluctuations). The fluctuations have a normal Gaussian distribution. The observed $1/f$ fluctuations exhibit scale invariance.

Keywords: electric arc discharge, power spectrum, $1/f$ noise, liquid electrode, nonequilibrium phase transitions.

UDC: 537.5; 544.6

Received: 30.03.2006