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.

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.

Determination of integral intensity of the ν6 band of CF235Cl2 (freon-12) according to the data of diode laser spectroscopy

1987 ◽  
Vol 124 (1) ◽  
pp. 13-20 ◽  
Author(s):  
O.K Voitsekhovskaya ◽  
Yu.V Kosichkin ◽  
Yu.S Makushkin ◽  
A.I Nadezhdinskii ◽  
E.V Stepanov ◽  
...  
Keyword(s):  
Diode Laser ◽  
Laser Spectroscopy ◽  
Integral Intensity ◽  
Diode Laser Spectroscopy

scholarly journals Determination of the Born–Oppenheimer potential function of CCl+ by velocity modulation diode laser spectroscopy

1986 ◽  
Vol 85 (11) ◽  
pp. 6276-6281 ◽  
Author(s):  
Martin Gruebele ◽  
Mark Polak ◽  
Geoffrey A. Blake ◽  
Richard J. Saykally
Keyword(s):  
Diode Laser ◽  
Potential Function ◽  
Laser Spectroscopy ◽  
Velocity Modulation ◽  
Diode Laser Spectroscopy

Gaseous Contaminant Measurement for Semiconductor Processing by Diode Laser Spectroscopy

1995 ◽  
Vol 38 (5) ◽  
pp. 22-29
Author(s):  
James McAndrew ◽  
Ronald Inman ◽  
Benjamin Jurcik
Keyword(s):  
Diode Laser ◽  
Fluid Dynamic ◽  
Air Separation ◽  
Tunable Diode Laser ◽  
Laser Absorption ◽  
Diode Laser Spectroscopy ◽  
Diode Laser Absorption ◽  
Gaseous Contaminant

Tunable diode laser absorption spectroscopy (TDLAS) is a novel tool for purity measurement in microelectronic process gases and environments. It is compatible with any matrix gas and extremely sensitive. This paper describes the application of a laboratory TDLAS instrument to measurement of CO, CO2, and H2O with sub-ppb sensitivity, including determination of a CO level of 0.35± 0.2 ppb in nitrogen samples from an air separation plant. Fluid dynamic simulation was used to optimize the design of the cell used for H20 measurements. TDLAS lends itself to the study of contamination sources in situ. As examples, measurements of CO generation in sampling vessels and of CO2 outgassing in an electropolished stainless steel chamber are briefly discussed.

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 Spectroscopy of NaD, KD, RbD, and CsD: Determination of the Mass Independent Parameters and Mass Scaling Coefficients of the Alkali Metal Hydrides

1993 ◽  
Vol 48 (11) ◽  
pp. 1111-1114 ◽  
Author(s):  
Kay Essig ◽  
Rolf-Dieter Urban ◽  
Helmut Birk ◽  
Harold Jones
Keyword(s):  
Diode Laser ◽  
Alkali Metals ◽  
Spectral Lines ◽  
Published Data ◽  
Mass Scaling ◽  
Diode Laser Spectrometer ◽  
Diode Laser Spectroscopy ◽  
Hot Band ◽  
Independent Parameters

Abstract The infrared spectrum of the monodeuterides of the alkali metals, sodium, potassium, rubidium, and cesium have been measured with a nominal accuracy of ±0.001 cm-1 using a diode laser spectrometer. Spectral lines of both the fundamental and the first hot band were observed for all the deuterides except RbD where only the fundamental was measured. The accuracy of previously published data on KH was also improved. Combination of these new data with similar results obtained previously for the equivalent monohydrides allowed the determination of a set of mass-independent parameters and mass-scaling coefficients for the hydrides of all of the alkali metals. This has allowed the relative magnitudes of the parameters to be compared for the first time. The results indicate that non-adiabatic effects are most prevalent in CsH.

Infrared diode laser spectroscopy of CaH and CaD(X 2Σ+). Determination of mass‐independent parameters

1989 ◽  
Vol 91 (8) ◽  
pp. 4462-4467 ◽  
Author(s):  
D. Petitprez ◽  
B. Lemoine ◽  
C. Demuynck ◽  
J. L. Destombes ◽  
B. Macke
Keyword(s):  
Diode Laser ◽  
Laser Spectroscopy ◽  
Diode Laser Spectroscopy ◽  
Independent Parameters
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