Experimental observation of the transition from nonlocal to local electron kinetics in inductively coupled plasmas
- Authors
- Lee, Hyo-Chang; Lee, Min-Hyong; Chung, Chin-Wook
- Issue Date
- Jan-2010
- Publisher
- AMER INST PHYSICS
- Keywords
- plasma diagnostics; plasma temperature
- Citation
- APPLIED PHYSICS LETTERS, v.96, no.4, pp.1 - 3
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 96
- Number
- 4
- Start Page
- 1
- End Page
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175609
- DOI
- 10.1063/1.3291038
- ISSN
- 0003-6951
- Abstract
- The transition from nonlocal to local kinetics was observed through the spatially resolved measurements of electron energy distribution functions in inductively coupled plasmas. As gas pressures increase, the spatial profiles of the effective electron temperatures (T-eff) from the electron energy distribution functions changed dramatically from hollow shapes to flat shapes. With further increases in gas pressures, the T-eff had saddle-shaped profiles with the highest T-eff in the vicinity of an antenna coil. These changes in the radial profiles of the T-eff show a transition of the electron kinetics from nonlocal to local regimes. This transition occurred when the electron energy relaxation lengths became smaller than the antenna half size.
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