Near-infrared absorption spectrum of the Ar–HD complex: A theoretical study of predissociation effects

2001 ◽  
Vol 115 (7) ◽  
pp. 3155-3172 ◽  
Author(s):  
Felicja Mrugała
Keyword(s):  
Absorption Spectrum ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Theoretical Study ◽  
Infrared Absorption Spectrum

Perturbation Analysis of the υ = 6 Level in thed3Δ State of CS Based on Its Near-Infrared Absorption Spectrum

2011 ◽  
Vol 115 (14) ◽  
pp. 2978-2984 ◽  
Author(s):  
Chuanliang Li ◽  
Lunhua Deng ◽  
Yan Zhang ◽  
Ling Wu ◽  
Xiaohua Yang ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Infrared Absorption ◽  
Perturbation Analysis ◽  
Near Infrared ◽  
Infrared Absorption Spectrum

Rotational structure in the near‐infrared absorption spectrum of ozone

1993 ◽  
Vol 99 (1) ◽  
pp. 737-739 ◽  
Author(s):  
Stuart M. Anderson ◽  
Peter Hupalo ◽  
Konrad Mauersberger
Keyword(s):  
Absorption Spectrum ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Infrared Absorption Spectrum ◽  
Rotational Structure

Bent Cyclopenta-2,4-dienylideneketene: Spectroscopic and ab initio Study of Reactive Intermediate

1998 ◽  
Vol 63 (8) ◽  
pp. 1094-1106 ◽  
Author(s):  
Juliusz G. Radziszewski ◽  
Piotr Kaszynski ◽  
Anders Friderichsen ◽  
Jens Abildgaard
Keyword(s):  
Absorption Spectrum ◽  
Ab Initio ◽  
Phthalic Anhydride ◽  
Infrared Absorption ◽  
Triple Bond ◽  
Theoretical Study ◽  
Infrared Absorption Spectrum ◽  
Matrix Isolation ◽  
Reactive Intermediate ◽  
Ab Initio Study

Results of an experimental and theoretical study of cyclopenta-2,4-dienylideneketene (3), a highly unstable reactive intermediate, are reported. The ketene was prepared, under matrix isolation conditions at 4.2 or 10 K, by laser photocarbonylation of 1,2-didehydrobenzene (1) photogenerated earlier from phthalic anhydride (2). FTIR polarization measurements performed on partially photooriented samples of 3 immobilized in solid neon or argon provide infrared transition moment directions for most of the observed vibrations. Experimental results confirm that the ketene is bent, as predicted by ab initio calculations. Utilizing two isotopically modified 3, 3b and 3c, on the basis of the infrared absorption spectrum alone, we have analyzed and assigned its vibrations in a way, which leaves no doubt about the bent ketene structure. This work was motivated by a long standing confusion surrounding the assignments of the vibrations in 1,2-didehydrobenzene (1), especially of its "triple" bond stretch.

Measurement and Analysis of near Infrared Spectrum of Gasoline Vapor

2012 ◽  
Vol 571 ◽  
pp. 243-247
Author(s):  
Li Ping Yan ◽  
Shu Li ◽  
Lai Gen Luo ◽  
Min Zhang ◽  
Jing Xin Dong
Keyword(s):  
Absorption Spectrum ◽  
Infrared Spectrum ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Detection System ◽  
Infrared Absorption Spectrum ◽  
Vapor Concentration ◽  
Absorption Characteristic ◽  
Gasoline Vapor ◽  
Near Infrared Spectrum

In the fiber-sensing gas detection system, characteristic of near infrared absorption spectrum of the detected gas is greatly significant. The volatilized gasoline vapor is a mixture rich in various components, of which near infrared absorption spectrum shall be determined by means of experimental measurement. In this paper, an experimental platform is constructed by analyzing absorption characteristic of liquid composition in gasoline within the range of near infrared spectrum, which achieves measurement of the volatilized gasoline vapor with different concentration. In addition, reliability of this measurement method is inspected, a comparison between features of absorption spectrograms of liquid and gas is made, and linear relation of absorbance and concentration of gasoline vapor is verified. The result shows that the experimental data is acceptable and may be used as the basis of further analysis and for design of the online detecting system of gasoline vapor concentration in the hazardous environment.

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