Diode laser spectrum and rovibrational analysis of the ν6 band of vinyl fluoride

1993 ◽  
Vol 71 (10) ◽  
pp. 1716-1727 ◽  
Author(s):  
S. Giorgianni ◽  
P. Stoppa ◽  
M. Pedrali ◽  
S. Ghersetti
Keyword(s):  
Diode Laser ◽  
Tunable Diode Laser ◽  
Laser Spectrum ◽  
Diode Laser Spectrometer ◽  
Symmetry Species ◽  
Hot Band ◽  
Vibration Rotation ◽  
Centrifugal Distortion Constants ◽  
Perturbation Effect ◽  
Rotation Spectrum

The vibration–rotation spectrum of CH2=CHF has been investigated in the ν6 band region around 1305 cm−1 at Doppler limited resolution using a tunable diode laser spectrometer. The measurements have been performed at low temperature (240 K) to decrease hot band interferences. This fundamental of symmetry species A′ gives rise to an a/b hybrid band, which was mainly composed of a-type transitions. Both J and K structures have been resolved in the QQK(J) subbranches and the rovibrational analysis in the P, Q, and R branches has led to the identification of more than 1000 lines with J ≤ 43 and Ka ≤ 14. The ν6 band is affected by first-order b-type and second-order a-type Coriolis resonances with the ν9 + νn combination, and the perturbation effect has been found stronger for the [Formula: see text]level. About 870 transitions free of major resonance contributions were fitted using Watson's A-reduction Hamiltonian in the Ir representation, and a set of effective rotational and quartic centrifugal distortion constants was determined for the ν6 = 1 state of CH2=CHF.

Diode Laser Spectrum of HCCCN near 5 pm * The Hot Band

1981 ◽  
Vol 36 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Koichi Yamada ◽  
Gisbert Winnewisser
Keyword(s):  
Diode Laser ◽  
Doppler Broadening ◽  
Laser Spectrometer ◽  
Spectral Parameters ◽  
Laser Spectrum ◽  
Rotation Band ◽  
Diode Laser Spectrometer ◽  
Hot Band ◽  
Vibration Rotation

Two hot bands associated with the vs vibration-rotation band of cyanoacetylene, HC3N, have been measured with a diode laser spectrometer in the 2060- 2100 cm-1 range. Since the width of the observed lines is essentially determined by Doppler broadening, the splitting of the hot band rovibrational transitions due to l-type doubling could be resolved and was assigned. Improved spectral parameters were obtained, including the anharmonicity parameters

Diode Laser Spectrum of HCCCN near 5 μm

1980 ◽  
Vol 35 (7) ◽  
pp. 690-693 ◽  
Author(s):  
Koichi Yamada ◽  
R. Schieder ◽  
G. Winnewisser ◽  
A. W. Mantz
Keyword(s):  
Excited State ◽  
Diode Laser ◽  
Rotational Constant ◽  
Doppler Broadening ◽  
Laser Spectrometer ◽  
Laser Spectrum ◽  
Band Center ◽  
Diode Laser Spectrometer ◽  
Vibration Rotation ◽  
Better Than

The ν3 vibration-rotation band of cyanoacetylene, HC3N, has been measured in the wavenumber range 2068 to 2095 cm-1 to an accuracy of better than ± 0.005 cm-1 using a diode laser spectrometer. The width of the observed lines is essentially limited by Doppler-broadening. The band center of the ν3 vibration is determined from the observed P- and R-branch transitions to be at 2079.30500 (58) cm-1. The rotational constant of the excited state is B′= 0.151212 (10) cm-1.

Diode laser measurements of N2-broadened line widths in the ν1 band of OCS

1985 ◽  
Vol 63 (4) ◽  
pp. 527-531 ◽  
Author(s):  
A. Mouchet ◽  
G. Blanquet ◽  
P. Herbin ◽  
J. Walrand ◽  
C. P. Courtoy ◽  
...  
Keyword(s):  
Diode Laser ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Pressure Broadening ◽  
Laser Measurements ◽  
Diode Laser Spectrometer ◽  
Impact Theory ◽  
Line Widths ◽  
Vibration Rotation

A tunable diode laser spectrometer has been used to perform measurements of pressure-broadening coefficients for 20 vibration–rotation lines in the ν1 band of 16O12C32S perturbed by N2. Calculations of these broadening coefficients have been carried out on the basis of the Anderson–Tsao–Curnutte theory and by considering an improved semiclassical impact theory.

Detection of the Infrared Spectrum of Cyanobutadiyne, HC5N

1981 ◽  
Vol 36 (10) ◽  
pp. 1052-1056 ◽  
Author(s):  
Koichi Yamada ◽  
Gisbert Winnewisser
Keyword(s):  
Infrared Spectrum ◽  
Diode Laser ◽  
Vibrational State ◽  
Tunable Diode Laser ◽  
Centrifugal Distortion ◽  
Laser Spectrometer ◽  
Excited Vibrational State ◽  
Diode Laser Spectrometer ◽  
Band Origin ◽  
Centrifugal Distortion Constants

The CN stretching band, ν2, of cyanobutadiyne has been detected by a tunable diode laser spectrometer in the wavenumber range from 2250 to 2260 cm-1. The P-and R-branch transitions, up to P(77) and R(75), of the fundamental band were identified and measured with the accuracy of 0.001 cm-1. The band origin was obtained to be 2256.12406(13) cm-1. The rotational and centrifugal distortion constants in the excited vibrational state, B′ and D′, were also determined.

Kalman filtering of tunable diode laser spectrometer absorbance measurements

1994 ◽  
Vol 33 (24) ◽  
pp. 5506 ◽  
Author(s):  
Haris Riris ◽  
Clinton B. Carlisle ◽  
Russell E. Warren
Keyword(s):  
Diode Laser ◽  
Kalman Filtering ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer

HHigh Resolution Spectroscopy Using a Stabilized Diode Laser: the 2υ9 Band of HNO3

1988 ◽  
Vol 43 (5) ◽  
pp. 402-406 ◽  
Author(s):  
Thomas Giesen ◽  
M. Harter ◽  
R. Schieder ◽  
G. Winnewisser ◽  
K.M.T. Yamada
Keyword(s):  
High Resolution ◽  
Spectral Data ◽  
Internal Rotation ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Fermi Resonance ◽  
High Resolution Spectrum ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Stabilization Technique

The high resolution spectrum of the 2 υ9 band of HNO3 has been recorded by a tunable diode laser spectrometer with a newly developed frequency stabilization technique. The spectral data were digitally stored and processed by a dedicated micro-computer in order to improve the sensitivity and the precision of the measurements. In addition to the anomalies due to the Fermi resonance with the υ5 = 1 state, we have observed the line doubling caused by the internal rotation of the OH group.

Diode Laser Spectrum of HCCCN: CN Stretching Band

1983 ◽  
Vol 38 (12) ◽  
pp. 1296-1308 ◽  
Author(s):  
Koichi Yamada ◽  
Regina Best ◽  
G. Winnewisser
Keyword(s):  
Diode Laser ◽  
Accurate Determination ◽  
Rotational Constant ◽  
Centrifugal Distortion ◽  
Laser Spectrum ◽  
Diode Laser Spectroscopy ◽  
Vibration Rotation ◽  
Wavenumber Region ◽  
Estimated Error

Abstract The ν2 vibration-rotation band of cyanoacetylene. HCCCN, has been studied by diode laser spectroscopy in the wavenumber region from 2240 cm-1 to 2290 cm-1. In addition to the fundamental band we have assigned hot bands arising from v7 = 1. 2. and 3 states and from v6 = 1 state. In these hot bands splittings due to l-type doubling and l-type resonance were clearly observed. The transition wavenumbers were measured precisely, with an estimated error of 0.001 cm-1. Their analysis simultaneously with the microwave data allowed an accurate determination of the band origin v0 = 2273.99539(11) cm-1, the rotational constant B′ = 4527.4861 (28) MHz. and the centrifugal distortion constant D′ = 0.53547(43) kHz.

Improved Spectroscopic Constants for 14C16O2 Obtained from the ν3 Band

1989 ◽  
Vol 44 (7) ◽  
pp. 633-639 ◽  
Author(s):  
S. Dobos ◽  
G . Winnewisser ◽  
F. Kling ◽  
J. Mink
Keyword(s):  
High Resolution ◽  
Diode Laser ◽  
Spectral Region ◽  
Tunable Diode Laser ◽  
Spectroscopic Constants ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Medium Resolution ◽  
Carrier Free ◽  
Ftir Spectrometer

The absorption spectra of carrier free 14C16O2 in the spectral range of 2290-2150 cm−1 by a medium resolution FTIR spectrometer, and the spectral region of 2258 − 2229 cm−1 with a high resolution tunable diode laser spectrometer have been recorded. Spectroscopic constants were calculated from the 0001 − 0000 and 0111 −0110 transitions.

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