Accession Number:

AD0734721

Title:

Threshold Ionization of Acetylene by Monoenergetic Electron Impact,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF CHEMISTRY

Personal Author(s):

Report Date:

1970-08-12

Pagination or Media Count:

3.0

Abstract:

Evidence previously has been presented that in the ionization of C2H2 by electron impact the relative transition probabilities to lower vibrational states of the C2H2 ion are quite different from those found by photon impact and photoelectron spectroscopy. It was consequently proposed that ionization by electrons does not in this case obey the Franck-Condon principle, perhaps as a result of the formation of temporary negative ion states. The present results support the view that the ionization of C2H2 by electron impact near the threshold is not basically different from ionization by photon impact, and that the Franck-Condon principle is obeyed. Author

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE