Spectroscopic study during the extinction of an electric arc

Abstract

The decay of the electron density is measured during extinction of an arc discharge at atmospheric pressure. Measurements are made by spectroscopic methods. Complete local thermodynamic equilibrium is not attained for an electron density lower than 3*1016 cm-3. The apparent recombination coefficient for electrons and ions is studied as a function of temperature between 10000 and 13000K.

Spectroscopic characterization of a neon surface-wave sustained (2.45 GHz) discharge at atmospheric pressure

“…(1), and the other at the bottom, where elementary balances are controlled by improper balances [27,28] and the levels are underpopulated (pLSE recombining) or overpopulated (pLSE ionizing) with respect to the Saha equilibrium. These deviations might result from the existence of gradients in the plasma leading to diffusive processes that alter the balance (2) [31].…”