Abstract
Abstract
Vibrationally excited N2 molecules are suggested to be one of the possible key species responsible for the observed synergistic effects in plasma catalysis for NH3 synthesis. To assess the impact of vibrationally excited species in plasma-catalysis, quantitative measurements near interfaces are required, which remains challenging. In this letter, we report spatially resolved measurements of vibrationally excited N2 in the effluent of an atmospheric pressure plasma jet by molecular beam mass spectrometry (MBMS). The mass spectrometry signals as a function of electron energy of the ionizer were fitted with the effective electron-impact ionization cross section of N2(v) considering the vibrational distribution function as determined by a detailed vibrational level resolved plasma kinetic calculation. The reported method presented in this letter shows the capability of MBMS to measure vibrationally excited species of N2 near interfaces when the vibrational distribution function is known or assumed and shows excellent agreement with state-to-state kinetic models of N2(v).
Funder
the US Department of Energy, Office of Science, Office of Fusion Energy Sciences
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献