H. Deutsch et al., MEASURED AND CALCULATED ABSOLUTE TOTAL CROSS-SECTIONS FOR THE SINGLE IONIZATION OF CFX AND NFX BY ELECTRON-IMPACT, International journal of mass spectrometry and ion processes, 137, 1994, pp. 77-91
Citations number
34
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
Various additivity rules and the Deutsch-Mark (DM) formalism have been
used to calculate total absolute electron-impact cross-sections for s
ingle ionization of the CFx (x = 1-3) free radicals, the NFx (x = 1, 2
) free radicals and the NF3 molecule. A comparison is made with experi
mentally determined total single ionization cross-sections which have
been obtained from recently measured absolute partial ionization cross
-sections for the parent and dissociative ionization of these species.
The overall best agreement between the measured and the calculated cr
oss-sections in terms of the absolute values, the shapes and the cross
-section ordering was obtained using a recently proposed ''new'' addit
ivity rule. Common trends and tendencies in the ionization cross-secti
ons within each class of targets, CFx and NFx, and between the two tar
get families CFx and NFx are highlighted and a comparison will be made
with the previously measured and calculated ionization cross-sections
for the SiFx (x = 1-3) free radicals.