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1.
《Journal of Molecular Spectroscopy》1986,120(2):381-402
The A3Π-X3Σ− transition of NH has been observed using a high-resolution Fourier transform spectrometer. The first three vibrational levels in each state were observed and the vibrational, fine structure, and rotational constants obtained. 相似文献
2.
利用以前我们得到的双原分子的振转波函数,计算了BN分子A3Π-X3Π带系的Franck-Condon因子。计算中转动量子数的值由J=0取至J=180,结果适用于低温、高温和强激波条件。 相似文献
3.
The dipole moment function of the a 3Π state of CO is calculated using the multi-configuration self-consistent-field method of Wahl and Das. Only the dominant valence charge-transfer correlation configurations are mixed with the Hartree-Fock configuration since only the region between the classical turning points of the v = 1 vibrational level is considered. The calculated function does not agree with the shape of the fitted dipole moment function of Wicke et al. Configurations chosen on the basis of the model of optimized valence configurations do not determine an accurate dipole moment function for an open shell system. 相似文献
4.
《Journal of Molecular Spectroscopy》1987,122(2):417-427
A new method of producing strong and clean emission spectra of the gallium hydride/deuteride molecule has been developed. Five bands belonging to the gallium deuteride molecule (GaD) have been photographed under high resolution. The rotational analyses of the bands lying at 5669.14 Å (0-0) and 5675.10 Å (1-1) in the a3Π1-X1Σ+ transition, 5761.0 Å (0-0) and 5766.20 Å (1-1) in the a3Π0+-X1Σ+ transition, and 5760.85 Å (0-0) in the a3Π0−-X1Σ+ transition have been performed. Accurate rotational constants (B, D) have been determined for the X1Σ+, a3Π0± and a3Π1± states. The Λ doubling in the a3Π0 (v = 0) and a3Π1 (v = 0 and 1) states are obtained. 相似文献
5.
6.
The hf pulse excited Ar + N2 mixtures and early afterglow are investigated at total pressures from 266 to 1995 Pa using nitrogen of 0·05–0·5% concentration. The time-resolved intensity of Ar I atomic lines and N2 (2nd pos., 1st pos. and 1st neg.) band systems exhibit an intense early afterglow (0·3 ms). Both the decay of electron densityn
e and that of molecular Ar
2
+
ions and enhancement of coefficient of dissociative recombination due to electron temperature decrease after the pulse lead to the formation of characteristic secondary maximum of Ar I spectral line and N2 molecular band intensities in the momentt
m after cut-off the pulse. The values oft
m(B3g)>t
m(C3u)>t
m(Ar I) decrease with increasing total pressure and increase with growing concentration of N2 in Ar. In the afterglow period the Ar
2
+
dissociatively recombine in 5p and 4p Ar states. As a result of radiative transitions the metastable Ar (3P2,0) atoms are formed which consequently due to collisions with N2 molecules create electronically excited N2. With increasing nitrogen concentration this effect becomes less pronounced and at concentration of N2 greater than 0·5% it is negligible. 相似文献
7.
A new weak emission band system of the SeO molecule consisting of 34 band heads degraded to shorter wavelengths has been observed for the first time in the spectral region 6730–8570 Å. The vibrational analysis of the system suggests that it arises from the transition A3Πreg-X0+, 1. All the five subsystems allowed by the selection rule , ±1 have been identified. The constants in cm?1 derived for the A3Π state are
16 758 | |||
16 442 | 996 | 7.0 | |
16 131 | 994 | 6.5 |