共查询到20条相似文献,搜索用时 15 毫秒
1.
《Journal of Molecular Spectroscopy》1987,124(2):379-392
The v = 1 ← 0 vibration-rotation absorption bands of 32S16O, 34S16O, and 32S18O in the ground electronic state, X3Σ−, and the v = 1 ← 0 vibration-rotation band of 32S16O in the first excited electronic state, a1Δ, were measured at 0.004 cm−1 unapodized resolution with a high-resolution Fourier transform spectrometer coupled to a long path absorption cell. The v = 2 ← 0 vibration-rotation band of 32S16O in the X3Σ− state was also observed. Line positions for P- and R-branch transitions up to N = 44 for 32S16O have been measured and analyzed yielding improved molecular parameters. The present measurements are compared with previous infrared and microwave measurements. 相似文献
2.
The electronic spectrum of the gaseous gold monoxide molecule has been investigated in the range of 16000-18500?cm?1 using laser induced fluorescence spectroscopy and single vibronic level emission spectra. Five rotationally resolved vibronic bands are observed and assigned to the transitions B2Σ? (v'?=?0-4) -X2п3/2 (v''?=?0), in which the 0-0 transition is observed for the first time. The molecular constants of the excited state B2Σ? are obtained by a rotational analysis of the spectra. The spin-orbit coupling constant and the vibrational constants of the ground state X2пi are determined with the accuracy improved by one order of magnitude. The lifetimes of most observed bands are also measured for the first time. 相似文献
3.
4.
《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
5.
《Journal of Molecular Spectroscopy》1986,116(1):43-47
The emission spectrum of the B3Πg-A3Σu+ system of the 15N2 molecule was recorded between 3500 and 12 500 cm−1 with a high-resolution Fourier spectrometer. Twelve bands with 0 < v′ < 5 and 0 < v″ < 9 are analyzed. The molecular parameters of the B3Πg and A3Σu+ states are obtained by a complete fitting procedure. Derived values of equilibrium constants are deduced; the Franck-Condon factors are calculated for the B-A system of 15N2. 相似文献
6.
7.
Peter J. Domaille Timothy C. Steimle Ning Bew Wong David O. Harris 《Journal of Molecular Spectroscopy》1977,65(3):354-365
Single-mode cw dye laser excitation spectra of the (0, 0), (1, 1), and (2, 2) bands of the B2Σ+-X2Σ+ system of CaCl have been observed and assigned. Some 300 independent photo-luminescence spectra have been used in making the rotational assignment and demonstrate the power of the technique of line-by-line analysis in unraveling complex spectra. Spectroscopic constants (cm?1) obtained from a weighted least squares fit of the data are given below. Numbers in parentheses refer to 95% confidence limits in the last digit.
0 | 16856.69(2) | ||||||
369.8(10) | 366.8(10) | ||||||
1.13(20) | 1.28(20) | ||||||
0.15200(54) | 0.15448(54) | ||||||
0.00063(34) | 0.00073(35) | ||||||
1.027(16) × 10?7 | 1.097(17) × 10?7 | ||||||
(spin-rotation) | +0.003 | ?0.0630(16) |
State | |||||||
0 | 17924.335 (7) | 0.17989 (4) | 0.177 (7) | 0.03853 (7) | |||
1 | 842.574 (7) | 0.18701 (4) | 0.163 (7) | 0.01496 (9) | |||
0 | 432.566 (6) | 0.18818 (4) | 0.162 (7) | 0.01508 (9) | |||
1 | 411.289 (7) | 0.18724 (4) | 0.184 (7) | ?0.96 (6) | |||
0 | — | 0.18839 (4) | 0.160 (7) | ?0.11 (6) |
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