Cross sections for production of the CO(A 1Π−X 1Σ) Fourth Positive band system and O(3S) by photodissociation of CO2

1973 ◽  
Vol 58 (11) ◽  
pp. 4803-4815 ◽  
Author(s):  
E. P. Gentieu ◽  
J. E. Mentall
Keyword(s):  
Cross Sections ◽  
Band System ◽  
Positive Band

scholarly journals UV Study of the Fourth Positive Band System of CO and Oi135.6 nm From Electron Impact on CO and CO2

2019 ◽  
Author(s):  
J. M. Ajello ◽  
C. P. Malone ◽  
J. S. Evans ◽  
G. M. Holsclaw ◽  
A. C. Hoskins ◽  
...  
Keyword(s):  
Electron Impact ◽  
Band System ◽  
Positive Band

HgCl B2Σ+1/2 formation by low-energy electron impact dissociation of HgCl2 and(or) CH3HgCl molecules: applications to HgCl (B → X) laser

1990 ◽  
Vol 68 (2) ◽  
pp. 166-169 ◽  
Author(s):  
Mohammad F. Mahmood
Keyword(s):  
Energy Range ◽  
Electron Energy ◽  
Cross Sections ◽  
Band System ◽  
Low Energy ◽  
Dissociative Excitation ◽  
Intense Band ◽  
Electron Impact Dissociation ◽  
Low Energy Electrons ◽  
Low Energy Electron

An investigation was made of the process of dissociative excitation of a HgCl radical in the B2Σ+1/2 state due to collisions of low-energy electrons with HgCl2 and CH3HgCl molecules. Using the most intense band of the B2Σ+1/2 – X2Σ+1/2 system of the HgCl radical at 557 nm that corresponds to the ν′ = 0 to ν″ = 22 transition, emission cross sections were measured in the electron energy range 1–100 eV. The threshold electron energy for the observation of the B2Σ+1/2 – X2Σ+1/2 band system has been determined to be 7.0 and 8.0 eV for HgCl2 and CH3HgCl molecules, respectively.

Mechanism for production of the Fourth Positive Band System of CO by electron impact on CO2

1971 ◽  
Vol 76 (16) ◽  
pp. 3733-3737 ◽  
Author(s):  
M. Krauss ◽  
S. R. Mielczarek ◽  
D. Neumann ◽  
C. E. Kuyatt
Keyword(s):  
Electron Impact ◽  
Band System ◽  
Positive Band

Absolute absorption cross sections at high resolution in the A2Πi – X2Πi band system of ClO

1984 ◽  
Vol 62 (5) ◽  
pp. 473-486 ◽  
Author(s):  
S. A. Barton ◽  
J. A. Coxon ◽  
U. K. Roychowdhury
Keyword(s):  
Cross Sections ◽  
Column Density ◽  
Flow System ◽  
Band System ◽  
Nonlinear Least Squares ◽  
Synthetic Spectrum ◽  
Electronic Transition Moment ◽  
Chlorine Monoxide ◽  
Fast Flow ◽  
Least Squares Techniques

Chlorine monoxide (ClO) has been produced at temperatures near 315 K in a fast-flow system at total pressures (of argon diluent) in the range 1.0–2.0 mm Hg. The transmittance of ultraviolet radiation has been determined with a spectral resolution of 0.0054 nm for all 35ClO ν′–0 A2Π3/2 – X2Π3/2 sub-bands in the range 3 ≤ ν′ ≤ 12 (305.9–274.9 nm). The ClO column density obtained with 8 or 12 traversals of the radiation along an 80 cm cell was in the range 1.0–2.0 × 1017 cm−2.The experimental transmittance profiles for each sub-band have been reproduced closely by synthetic spectrum calculations. The parameters required as input to the programs were optimized by nonlinear least-squares techniques. The fitted (Lorentzian) linewidths are on average more than double those previously reported from visual estimates of linewidths on photographic plates. The fitted band strengths lead to a well-defined electronic transition moment variation for the A – X system of ClO, which is in excellent agreement with an earlier determination by Mandelman and Nicholls from spectra at lower resolution (0.22 nm) with unresolved rotational structure.

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