期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 43, 期 36, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/43/36/365201
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Electron swarm parameters (the drift velocity and the longitudinal diffusion coefficient) were measured in pure C2H2 and also in C2H2-Ar mixtures containing 0.517% and 5.06% acetylene over wide E/N ranges. These swarm parameters were analysed using a Boltzmann equation analysis and a set of electron collision cross sections for the C2H2 molecule was derived so that it was consistent with the present swarm data and published ionization coefficient. The present result suggested the presence of a Ramsauer-Townsend minimum in the elastic momentum transfer cross section at 0.08 eV and prominent threshold and resonance peaks in the nu(4)/nu(5) vibrational excitation cross section. The present cross section set was also confirmed to be consistent with the published experimental total cross section of C2H2.
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