Symmetry-resolved absorption spectra of vibrationally excited CO2 molecules
Liu, X. J.
- 材料学院－已发表论文 
Symmetry-resolved x-ray absorption spectroscopy has been first carried out on high-temperature molecules. From the angle-resolved ion yield spectra of CO2 both at room temperature and at 430 degrees C, symmetry-resolved absorption profiles of the C 1s(-1)2 pi(u) and O 1s(-1)2 pi(u) resonances have been extracted for the vibrational ground state molecules and bending-vibration excited ones. The profiles change dramatically between them, and the Renner-Teller effect becomes more evident for the vibrationally excited molecules. The effects of the multimode vibronic coupling are suggested for the O 1s(-1)2 pi(u) and O 1s(-1)3s sigma(g) resonances.