Total ionization and electron attachment cross sections of CCl2F2 by electron impact |
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Authors: | VM Pejčev MV Kurepa IM Čadež |
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Institution: | Institute of Physics, 11001 Beograd, Yugoslavia |
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Abstract: | The absolute total ionization cross sections from threshold to 250 eV and dissociative attachment cross sections from zero to 10 eV have been measured for the CCl2F2 (dichloro-difluoro-methane) molecule by using a parallel plate condenser type ionization chamber. The maximum of the ionization cross-section curve was found to be at an energy of about 90 eV with a cross section of 1.44 × 10?19 m2. The attachment cross-section curve shows three peaks, the most intense being at zero electron energy with a cross-section value of 1.80 × 10?20 m2, and the other two at energies of 0.6 eV and 3.5 eV, respectively. The maximal relative error in cross-section values is 0.08, for electron energies larger than 0.4 eV. |
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