The C and O 1s photoelectron lines of the CO2- molecule in the gas phase have been measured with vibrational resolution in the threshold region. The vibrational fine structure on the O 1s line is completely dominated by the antisymmetric stretching mode with a frequency of 307 (+/-3) meV. This mode can be excited only via vibronic coupling, as predicted by Domcke and Cederbaum [Chem. Phys. 25, 189 (1977)], and provides a mechanism for dynamic core-hole localization. Relaxation effects are found to affect strongly the vibrational intensity distribution of the photoelectron line.
Kivimaki, A., Kempgens, B., Maier, K., Koppe, H., Piancastelli, M.n., Neeb, M., et al. (1997). Vibrationally resolved O is photoelectron spectrum of CO2: vibronic coupling and dynamic core-hole localization. PHYSICAL REVIEW LETTERS, 79(6), 998-1001.
Vibrationally resolved O is photoelectron spectrum of CO2: vibronic coupling and dynamic core-hole localization
PIANCASTELLI, MARIA NOVELLA;
1997-01-01
Abstract
The C and O 1s photoelectron lines of the CO2- molecule in the gas phase have been measured with vibrational resolution in the threshold region. The vibrational fine structure on the O 1s line is completely dominated by the antisymmetric stretching mode with a frequency of 307 (+/-3) meV. This mode can be excited only via vibronic coupling, as predicted by Domcke and Cederbaum [Chem. Phys. 25, 189 (1977)], and provides a mechanism for dynamic core-hole localization. Relaxation effects are found to affect strongly the vibrational intensity distribution of the photoelectron line.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
