학술논문
Formation of a Double Layer in Electronegative ${\rm O}_{2}$ Plasma
Document Type
Periodical
Author
Source
IEEE Transactions on Plasma Science IEEE Trans. Plasma Sci. Plasma Science, IEEE Transactions on. 42(10):2798-2799 Oct, 2014
Subject
Language
ISSN
0093-3813
1939-9375
1939-9375
Abstract
A double layer (DL) was observed at the boundary between the source region and expansion region of an inductively coupled, radio frequency, plasma reactor when an oxygen discharge was ignited at low pressure. A DL is a narrow localized region with relatively large potential difference and electric field, which can be formed in electropositive as well as electronegative plasmas. In an inductively coupled plasma reactor of this type, it seems to be formed at the interface between the smaller source region and the larger expansion chamber and acts as an internal boundary separating two plasma regions of significantly different compositions, density, and plasma potentials.