Sa. Moshkalyov et al., Role of low-energy electrons in Ar emission from low-pressure radio frequency discharge plasma, APPL PHYS L, 75(3), 1999, pp. 328-330
Optical emission spectra from a low-pressure Ar plasma were studied with hi
gh spatial resolution. It has been shown that the intensity ratios of Ar li
nes excited through metastable levels to those excited directly from the gr
ound state are sensitive to the shape of electron energy distribution funct
ion. From these measurements, important information on the spatial variatio
n of plasma parameters can be obtained. (C) 1999 American Institute of Phys
ics. [S0003-6951(99)01629-0].