| Autor: |
Kilcoyne, A. L. D., Schmidbauer, M., Koch, A., Randall, K. J., Feldhaus, J. |
| Předmět: |
|
| Zdroj: |
Journal of Chemical Physics; 5/1/1993, Vol. 98 Issue 9, p6735, 7p |
| Abstrakt: |
We have measured partial photoionization cross sections σ and asymmetry parameters β of the C 1s main line and the π→π* shake-up satellites of the isoelectronic molecules formaldehyde and ethylene in the near threshold region. In all channels we observe a strong cross section enhancement and a decrease in the β parameter due to a shape resonance in the continuum. For each molecule the variation of σ and β with photoelectron kinetic energy is nearly identical for main line and satellites indicating only relatively small modifications of the effective molecular potential induced by the additional π→π* excitation. There are no indications of conjugate shake-up processes in either molecule. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
