scholarly journals Photodissociation of carbon dioxide in singlet valence electronic states. II. Five state absorption spectrum and vibronic assignment

2013 ◽  
Vol 138 (22) ◽  
pp. 224107 ◽  
Author(s):  
Sergy Yu. Grebenshchikov
Keyword(s):  
Carbon Dioxide ◽  
Absorption Spectrum ◽  
Electronic States

THE ABSORPTION SPECTRUM OF CF2

1967 ◽  
Vol 45 (7) ◽  
pp. 2355-2374 ◽  
Author(s):  
C. Weldon Mathews
Keyword(s):  
Absorption Spectrum ◽  
Electronic State ◽  
Ground State ◽  
Band System ◽  
Electronic States ◽  
Vibrational Structure ◽  
Rotational Structure ◽  
Transition Moment ◽  
High Dispersion ◽  
Parallel Type

The absorption spectrum of CF2 in the 2 500 Å region has been photographed at high dispersion, and the rotational structure of a number of bands has been analyzed. The analysis of the well-resolved subbands establishes that these are perpendicular- rather than parallel-type bands, as previously assigned. Further analysis shows that the upper and lower electronic states are of 1B1 and 1A1symmetries respectively, corresponding to a transition moment that is perpendicular to the plane of the molecule. In the upper electronic state, r0(CF) = 1.32 Å and [Formula: see text], while in the ground state, r0(CF) = 1.300 Å and [Formula: see text]. An investigation of the vibrational structure of the band system has shown that the vibrational numbering in ν2′ must be increased by one unit from earlier assignments, thus placing the 000–000 band near 2 687 Å (37 220 cm−1). A search between 1 300 and 8 500 Å showed two new band systems near 1 350 and 1 500 Å which have been assigned tentatively to the CF2 molecule.

scholarly journals Isoquinoline gas-phase absorption spectrum in the vacuum ultraviolet between 3.7 and 10.7 eV. New valence and Rydberg electronic states

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 5121-5141 ◽  
Author(s):  
Sydney Leach ◽  
Nykola C. Jones ◽  
Søren V. Hoffmann ◽  
Sun Un
Keyword(s):  
Absorption Spectrum ◽  
Gas Phase ◽  
Vacuum Ultraviolet ◽  
Electronic States ◽  
Synchrotron Source

VUV photons from a synchrotron source were used to record the gas-phase absorption spectrum of isoquinoline over the range 3.5 to 10.7 eV.

scholarly journals Absorption Spectrum of As2 Further Analysis of the A→X System and Observation of New Electronic States

1974 ◽  
Vol 29 (3) ◽  
pp. 429-435 ◽  
Author(s):  
Abdel Mooti Sibaï ◽  
Pierre Perdigon ◽  
Ari Topouzkhanian
Keyword(s):  
Absorption Spectrum ◽  
High Resolution ◽  
Energy Range ◽  
Electronic States ◽  
Absorption Bands ◽  
High Resolution Analysis ◽  
Resolution Analysis

Within the study of the interaction between A and B states of As2 molecule, a high resolution analysis of 16 absorption bands with 11 ≦ υ ≦ 17 in the A ← X system has been performed. The following constants are proposed for the A state: T00 = 40145.9 cm-1, ωe = 262.7 cm-1, ωe xe = 0.48 cm-1, Be = 0.0797 cm-1, De ≅ 3 X 10-8 cm-1 , αe = 0.00031 cm-1 , re = 2.374 Å. Three new vibronic levels have been discovered in the 42 400 -44 500 cm-1 energy range, either directly or by the perturbations they induce in A levels

The ultraviolet absorption spectrum of hot carbon dioxide

1997 ◽  
Vol 277 (4) ◽  
pp. 356-360 ◽  
Author(s):  
Reed J. Jensen ◽  
Robert D. Guettler ◽  
John L. Lyman
Keyword(s):  
Carbon Dioxide ◽  
Absorption Spectrum ◽  
Ultraviolet Absorption ◽  
Ultraviolet Absorption Spectrum

The absorption spectrum of liquid bromine

1937 ◽  
Vol 162 (910) ◽  
pp. 414-419 ◽  
Author(s):  
D. Porret ◽  
Frederick George Donnan
Keyword(s):  
Absorption Spectrum ◽  
Absorption Spectra ◽  
Ground State ◽  
Wave Length ◽  
Electronic States ◽  
Excited Electronic States ◽  
Long Wave ◽  
Liquid Bromine ◽  
Continuous Absorption ◽  
The Continuum

The continuous absorption spectra of gaseous bromine (Peskow 1917; Ribaud 1919; Gray and Style 1929; Acton, Aikin and Bayliss 1936) and of dissolved bromine (Bovis 1929; Gillam and Morton 1929) have been studied many times. They present a wide continuum (from about 30, 000 to 17, 000 cm. -1 .) with a maximum at 24, 000 cm. -1 . For the gas the continuum is preceded by two band systems on the long wave-length side. These systems converge at 19, 585 and 15, 896 cm. -1 . respectively. Acton, Aikin and Bayliss (1936) have shown that the continuum is not simple, and Mulliken (1936) and Darbyshire (1937) have pointed out that there are three overlapping continua corresponding to transitions from the ground state to three different excited electronic states. There are 3 II 0 + ← 1 Σ g , 3 II 1 ← 1 Σ g and 1 II ← 1 Σ g . The absorption spectrum of liquid bromine has been studied by Bovis (1929) form 18, 525 to 31, 750c cm. -1 . and by Camichel (1893) for two frequencies only (16, 978 and 18, 691 cm. -1 ).

Research of fiber carbon dioxide sensing system based laser absorption spectrum

2012 ◽  
Author(s):  
Yubin Wei ◽  
Tingting Zhang ◽  
Yanfang Li ◽  
Yanjie Zhao ◽  
Chang Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Absorption Spectrum ◽  
Laser Absorption ◽  
Sensing System

The absorption spectrum of gaseous hydrogen bromide in the schumann region I. Rotational analysis

1961 ◽  
Vol 263 (1313) ◽  
pp. 259-276 ◽  
Keyword(s):  
Absorption Spectrum ◽  
Hydrogen Bromide ◽  
Electronic States ◽  
Gaseous Hydrogen ◽  
Rotational Structure ◽  
Resolving Power ◽  
Rotational Analysis ◽  
Region I

The absorption spectrum of gaseous hydrogen bromide has been photographed in the region 1180 to 1500 Å, using fourth and fifth orders of a 3 m grating. About forty bands have been observed. The resolving power sufficed for the study of most of the discrete rotational structure. The analysis reveals that few of the bands are related in vibrational progressions and shows rather that they are to be associated with atleast thirty new electronic states.

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