Symmetry-resolved absorption spectra of vibrationally excited CO2 molecules.
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) 2pi(u) and O 1s(-1) 2pi(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) 2pi(u) and O 1s(-1) 3s sigma(g) resonances.
Tanaka
T
T
Department of Physics, Sophia University, Tokyo 102-8554, Japan.
Makochekanwa
C
C
Tanaka
H
H
Kitajima
M
M
Hoshino
M
M
Tamenori
Y
Y
Kukk
E
E
Liu
X J
XJ
Prümper
G
G
Ueda
K
K