Abstract
Ionization cross sections for Zn, Cd, and Te2 vapors have been measured by collection of the total positive ion currents produced from electron impact by 50-eV electrons in the specially designed ion source of a mass spectrometer. The results: σi(Zn) = 5.03±0.45×10−16 cm2, σi(Cd) = 8.54±0.33×10−16 cm2, σi(Te2) = 17.46±0.48×10−16 cm2. These results are combined with available data to set up a compilation of absolute ionization cross sections for 27 atoms. Very limited agreement is found with theoretical ionization cross sections: It is shown that ionization cross sections of molecules cannot be calculated reliably by summation of the ionization cross sections of the constituent atoms.
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Dates
Type | When |
---|---|
Created | 20 years, 7 months ago (Jan. 9, 2005, 3:17 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 8, 2024, 7:29 p.m.) |
Indexed | 1 year, 5 months ago (March 13, 2024, 4:18 a.m.) |
Issued | 59 years, 7 months ago (Feb. 1, 1966) |
Published | 59 years, 7 months ago (Feb. 1, 1966) |
Published Print | 59 years, 7 months ago (Feb. 1, 1966) |
@article{Pottie_1966, title={Cross Sections for Ionization by Electrons. I. Absolute Ionization Cross Sections of Zn, Cd, and Te2. II. Comparison of Theoretical with Experimental Values for Atoms and Molecules}, volume={44}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1726842}, DOI={10.1063/1.1726842}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Pottie, R. F.}, year={1966}, month=feb, pages={916–922} }