TY - JOUR
T1 - High-resolution observation and analysis of the I2+ A 2Π 32,u-X 2Π 32,g system
AU - Deng, Lun Hua
AU - Zhu, Yuan Yue
AU - Li, Chuan Liang
AU - Chen, Yang Qin
PY - 2012/8/7
Y1 - 2012/8/7
N2 - Rotationally resolved absorption spectra of I2+ were recorded in 12 065-13 062 cm -1 region by employing optical heterodyne velocity modulation absorption spectroscopy. In total, 4054 lines were assigned to 24 bands in the A 2Π 32,u-X 2Π 32,g system spanning the vibrational levels υ ′′ = 1-4 and υn′ = 11-19. The assigned lines were globally fitted and an error of 0.003 cm -1 was obtained. Rotational constants, B υ, were used to derive equilibrium parameters B e ′′ = 0.03977725(77) cm -1, a e ′′ = 1.1819(24)×10 -4 cm -1, r e′′ = 2.584386(25) Å of the X 2Π 32,g state, and B e ′ = 0.0305787(37) cm -1, a e ′ = 1.2353(23)×10 -4 cm -1, r e′ = 2.94758(18) Å of the A 2Π 32,u state. Vibrational energies were used to derive ω e ′′ = 239.0397(55) cm -1, ω ex e ′′ = 0.64951(87) cm -1 of the X 2Π 32,g state and ω e ′ = 138.103(11) cm -1, ω ex e ′ = 0.45027(34) cm -1 of the A 2Π 32,u state. The A 2Π 32,u (υ n = 13) state was found to be rotationally perturbed by the a 4Σ1/2,u- (υ n = 17) state through second-order spin-orbit coupling.
AB - Rotationally resolved absorption spectra of I2+ were recorded in 12 065-13 062 cm -1 region by employing optical heterodyne velocity modulation absorption spectroscopy. In total, 4054 lines were assigned to 24 bands in the A 2Π 32,u-X 2Π 32,g system spanning the vibrational levels υ ′′ = 1-4 and υn′ = 11-19. The assigned lines were globally fitted and an error of 0.003 cm -1 was obtained. Rotational constants, B υ, were used to derive equilibrium parameters B e ′′ = 0.03977725(77) cm -1, a e ′′ = 1.1819(24)×10 -4 cm -1, r e′′ = 2.584386(25) Å of the X 2Π 32,g state, and B e ′ = 0.0305787(37) cm -1, a e ′ = 1.2353(23)×10 -4 cm -1, r e′ = 2.94758(18) Å of the A 2Π 32,u state. Vibrational energies were used to derive ω e ′′ = 239.0397(55) cm -1, ω ex e ′′ = 0.64951(87) cm -1 of the X 2Π 32,g state and ω e ′ = 138.103(11) cm -1, ω ex e ′ = 0.45027(34) cm -1 of the A 2Π 32,u state. The A 2Π 32,u (υ n = 13) state was found to be rotationally perturbed by the a 4Σ1/2,u- (υ n = 17) state through second-order spin-orbit coupling.
UR - https://www.scopus.com/pages/publications/84864859827
U2 - 10.1063/1.4739466
DO - 10.1063/1.4739466
M3 - 文章
AN - SCOPUS:84864859827
SN - 0021-9606
VL - 137
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 5
M1 - 054308
ER -