Intensités des raies d'absorption dans la bande chaude ν8 + ν11 − ν11 de l'aliène 12C3H4

1986 ◽  
Vol 64 (3) ◽  
pp. 289-296 ◽  
Author(s):  
M. Dang-Nhu ◽  
A. S. Pine
Keyword(s):  
High Resolution ◽  
Difference Frequency ◽  
Laser Spectrometer ◽  
Intensity Parameters ◽  
Hot Band ◽  
Frequency Laser ◽  
Group D

Strengths of individual lines of the hot band ν8 + ν11 − ν11 of 12C3H4 at 3 μm have been measured with a high-resolution difference-frequency laser spectrometer. Finally, two intensity parameters have been determined using a general formulation written for hot bands E′ × E ← E of group D2d.

Les intensités dans la pentade ν11, ν2 + ν12, 2ν10 + νl2, ν9 et ν3 + ν8 + ν10 de 12C2H4

1983 ◽  
Vol 61 (3) ◽  
pp. 514-521 ◽  
Author(s):  
M. Dang-Nhu ◽  
A. S. Pine ◽  
A. Fayt ◽  
M. De Vleeschouwer ◽  
C. Lambeau
Keyword(s):  
Basis Function ◽  
Iterative Procedure ◽  
Statistical Significance ◽  
Difference Frequency ◽  
Laser Spectrometer ◽  
Line Intensities ◽  
Intensity Parameters ◽  
Frequency Laser

Analysis of the intensities of an interacting polyad of bands is complicated by basis function mixing. Fortunately it is usually possible to find lines belonging principally to one band or to subsets of the polyad to begin an iterative procedure to derive intensity parameters. Five bands of ethylene in the 3 μm region have been investigated for line intensities by this method, using 148 selected measurements of about 6800 Doppler-limited transitions recorded with a difference-frequency laser spectrometer. Finally two band strengths and two Herman–Wallis parameters have been determined with statistical significance, permitting the observed intensities of the pentad to be calculated with 1%.

Optimization of a midinfrared high-resolution difference-frequency laser spectrometer

1992 ◽  
Vol 9 (11) ◽  
pp. 1962 ◽  
Author(s):  
A. H. Hielscher ◽  
C. E. Miller ◽  
D. C. Bayard ◽  
U. Simon ◽  
K. P. Smolka ◽  
...  
Keyword(s):  
High Resolution ◽  
Difference Frequency ◽  
Laser Spectrometer ◽  
Frequency Laser

Les intensités dans les bandes ν5, ν7 et ν8 + ν11 de l'éthane 12C2H6

1984 ◽  
Vol 62 (5) ◽  
pp. 512-519 ◽  
Author(s):  
M. Dang-Nhu ◽  
A. S. Pine ◽  
W. J. Lafferty
Keyword(s):  
Difference Frequency ◽  
Laser Spectrometer ◽  
Experimental Line ◽  
Intensity Parameters ◽  
Frequency Laser ◽  
Line Strengths

The intensity parameters of the ν5, ν7, and ν8 + ν11(A2u) bands of 12C2H4 have been determined from the experimental line strengths recorded in the 3 μm region with an infrared difference-frequency laser spectrometer.

Compact gas sensor using a pulsed difference-frequency laser spectrometer

1999 ◽  
Vol 24 (2) ◽  
pp. 110 ◽  
Author(s):  
Michael Seiter ◽  
Markus W. Sigrist
Keyword(s):  
Gas Sensor ◽  
Difference Frequency ◽  
Laser Spectrometer ◽  
Frequency Laser

High-resolution infrared difference frequency laser spectroscopic characterization of methane discharge plasmas

1994 ◽  
Author(s):  
Dionisio Bermejo ◽  
P. Cancio ◽  
Concepcion M. Domingo ◽  
Rafael T. Escribano ◽  
Juan M. Santos Santos ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectroscopic Characterization ◽  
Difference Frequency ◽  
Discharge Plasmas ◽  
Frequency Laser ◽  
Laser Spectroscopic
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