Experimental absolute electron impact ionization cross-sections of Cl2

Details Experimental absolute electron impact ionization cross-sections of Cl2 Experimental absolute electron impact ionization cross-sections of Cl2

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004njph....6..118b&link_type=abstract

New Journal of Physics, Volume 6, Issue 1, pp. 118 (2004).

Physics

9

Scientific paper

We measured absolute partial cross-sections for the formation of Cl2+, Cl22+, Cl+ and Cl2+ ions following electron impact on molecular chlorine (Cl2) from threshold to 900 eV using a time-of-flight mass spectrometer. The ion spectrum at all impact energies is dominated by the singly charged ions with maximum cross-section values of 4.6 × 10-16 cm2 for Cl2+ at 32 eV and 4.0 × 10-16 cm2 for Cl+ at 70 eV. The cross-sections for the formation of the doubly charged ions are more than one order of magnitude lower. Double ionization processes account for about 6% of the total ion yield at 70 eV. The absolute total ionization cross-section of Cl2 was obtained as the sum of all measured partial ionization cross-sections. To the extent possible, a comparison of our results with other available measured and calculated data is made.

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