Optical Diagnostics of a Pulsed Inductively Coupled Nitrogen Plasma

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Abstract

Temporal variation of electron energy distribution through a pulsed inductively coupled nitrogen plasma is discussed by the temporally resolved measurements of optical emission spectroscopy and laser-induced fluorescence. The intense intensity peak of the first negative band emission (N2+) immediately after RF power application to the plasma is likely to be caused by the rapid increase and subsequent decrease in a ≈ 3-eV electron population because the electron impact excitation of ground state N2+ ions is assumed to cause the first negative band emission. The intensity peak for the second positive band emission (N2), the threshold energy of which is ≈11 eV, is also observed but even smaller than the first negative band emission, indicating the smaller enhancement of an electron population at ≈11 eV than that at ≈3 eV during electron heating after the RF power application. © 2005, The Institute of Electrical Engineers of Japan. All rights reserved.

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Nakano, T., Takaira, S., Kitajima, T., & Samukawa, S. (2005). Optical Diagnostics of a Pulsed Inductively Coupled Nitrogen Plasma. The Transactions of the Institute of Electrical Engineers of Japan.A, 125(1), 30–38. https://doi.org/10.1541/ieejfms.125.30

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