IEEJ Transactions on Fundamentals and Materials
Online ISSN : 1347-5533
Print ISSN : 0385-4205
ISSN-L : 0385-4205
Control of population of excited nitrogen molecules by mixing hydrogen in low pressure discharge
Katsuyuki UematsuMotoshige YumotoTakao Sakai
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1998 Volume 118 Issue 6 Pages 635-640

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Abstract
The authors have studied on surface treatment of PTFE by a low pressure discharge.It is deduced that excited nitrogen molecules contribute to introduce polar'components on the surface.To confirm the speculation, we tried to change population of metastable nitrogen N2(A3Σ+ u) by quenching precursor N2 (B3IIg) with hydrogen molecule.The decrease of relaxation time which indicates a change of excited molecule and measured by emission spectroscopy using a time after glow method was obtained.
As a result, the relaxation times of N2 (B3IIg) and N2 (A3Σ+ u) decreased to 55% and 20% respectively, when mixing ratio of hydrogen was 3%. It was also deduced that hydrogen atom may take a part in a quenching process of N2 (A3Σ+ u).
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© The Institute of Electrical Engineers of Japan
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