期刊
APPLIED PHYSICS LETTERS
卷 93, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2995983
关键词
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资金
- German Research Foundation (DFG)
- Research Training Group 1051 [SCHU 2353/1-1]
The micro atmospheric pressure plasma jet is an rf driven (13.56 MHz, similar to 20 W) capacitively coupled discharge producing a homogeneous plasma at ambient pressure when fed with a gas flow of helium (1.4 slm) containing small admixtures of oxygen (similar to 0.5%). The design provides excellent optical access to the plasma core. Ground state atomic oxygen densities up to 3 x 10(16) cm(-3) are measured spatially resolved in the discharge core by absolutely calibrated two-photon absorption laser-induced fluorescence spectroscopy. The atomic oxygen density builds up over the first 8 mm of the discharge channel before saturating at a maximum level. The absolute value increases linearly with applied power. (C) 2008 American Institute of Physics.
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