Cross-sections and rate coefficients calculations for rotational excitation of cyanoethynylide ions (${{\rm{C}}}_{3}{{\rm{N}}}^{-}$) induced by collision with He atoms at low temperature

2018 ◽  
Vol 51 (4) ◽  
pp. 045202
Author(s):  
T Tchakoua ◽  
O Motapon ◽  
M Nsangou
Keyword(s):  
Low Temperature ◽  
Cross Sections ◽  
Rate Coefficients ◽  
Rotational Excitation

Rotational cross sections and rate coefficients of CP ( X 2 Σ + ) $\mathrm{CP}(\mathrm{X}^{2}\varSigma ^{+})$ induced by its collision with He ( 1 S ) $\mathrm{He}(^{1}S)$ at low temperature

2018 ◽  
Vol 363 (3) ◽  
Author(s):  
Théophile Tchakoua ◽  
Mama Pamboundom ◽  
Berthelot Said Duvalier Ramlina Vamhindi ◽  
Serge Guy Nana Engo ◽  
Ousmanou Motapon ◽  
...  
Keyword(s):  
Low Temperature ◽  
Cross Sections ◽  
Rate Coefficients

Cross sections and low temperature rate coefficients for the H + CH+reaction: a quasiclassical trajectory study

2007 ◽  
Vol 9 (5) ◽  
pp. 582-590 ◽  
Author(s):  
Philippe Halvick ◽  
Thierry Stoecklin ◽  
Pascal Larrégaray ◽  
Laurent Bonnet
Keyword(s):  
Low Temperature ◽  
Cross Sections ◽  
Rate Coefficients ◽  
Temperature Rate

Rotational excitation of HNCO by He: potential energy surface, collisional cross-sections and rate coefficients

2017 ◽  
Vol 471 (1) ◽  
pp. 80-88 ◽  
Author(s):  
E. Sahnoun ◽  
Y. Ajili ◽  
K. Hammami ◽  
N.-E. Jaidane ◽  
M. Mogren Al Mogren ◽  
...  
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Cross Sections ◽  
Energy Surface ◽  
Rate Coefficients ◽  
Rotational Excitation

The rotational excitation of carbon monoxide by hydrogen atom impact

1975 ◽  
Vol 342 (1629) ◽  
pp. 191-207 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Cross Sections ◽  
Rate Coefficients ◽  
Rotational Degree ◽  
Rotational Excitation ◽  
Body Frame ◽  
Hydrogen Atoms ◽  
Close Coupling ◽  
Coupling Methods ◽  
Low Energies

A quantal study is carried out of the rotational excitation of carbon monoxide in collision with hydrogen atoms. The interaction potential at short range is constructed semi-empirically and joined to the Buckingham potential at long range. The close-coupling formulation is used to assess the reliability of the fixed-nuclei approximation, which is developed in terms of the adiabatic theory of electron-molecule scattering. The applicability of two simplified close-coupling formulations, introduced by Rabitz and by McGuire & Kouri, is examined. We found that the fixed nuclei method is unpromising at low energies and time-consuming at high energies. The two simplified close-coupling methods are capable of providing results of useful accuracy. The similarity in formulation of the fixed-nuclei and one of the close-coupling methods, both of which are body-frame treatments, and the differences in their results show that the rotational degree of freedom must be treated rigorously. The method of Rabitz is economical, and we adopted it to calculate the energy dependent rotation excitation cross sections for the scattering of H + CO. The results are presented in the form of Maxwellian-averaged rate coefficients in the temperature range of 5-150 K.

scholarly journals Diffusion, Attachment and Attachment Cooling of Thermal Electrons in Oxygen and Oxygen Mixtures

1983 ◽  
Vol 36 (6) ◽  
pp. 831 ◽  
Author(s):  
R Hegerberg ◽  
RW Crompton
Keyword(s):  
Diffusion Coefficient ◽  
Cross Sections ◽  
Rate Coefficient ◽  
Resonance Energy ◽  
Sampling Technique ◽  
Rate Coefficients ◽  
Rotational Excitation ◽  
Attachment Rate ◽  
Excitation Cross Sections ◽  
Three Body

The Cavalieri electron density sampling technique has been used to measure the diffusion and attachment rate coefficients for thermal electrons in O2, and in O2–N2 and O2–C02 mixtures. The observed pressure dependence of the three-body attachment rate coefficient va/N2 is shown to be caused by the selective removal of electrons from the distribution at the attachment resonance energy, and the magnitude of this effect (so-called 'attachment cooling') is shown to be a measure of the magnitude of the rotational excitation cross sections in O2 and N2. Three-body rate coefficients for the formation of O2 involving O2, N2 and CO¯2 as third bodies have been found to be 2.2,011 and 3.5 X 10¯30 cm6 S¯l respectively. The value of the diffusion coefficient ND for thermal electrons in O2 is found to be (37 � 3) x 1021 cm¯1s¯1.

Rotational cross sections and rate coefficients of aluminium monoxide AlO(X2Σ+) induced by its collision with He(1S) at low temperature

2018 ◽  
Vol 701 ◽  
pp. 15-21
Author(s):  
Théophile Tchakoua ◽  
Pierre René Nkot Nkot ◽  
Jean Jules Fifen ◽  
Mama Nsangou ◽  
Ousmanou Motapon
Keyword(s):  
Low Temperature ◽  
Cross Sections ◽  
Rate Coefficients

scholarly journals Cross-sections and rate coefficients for rotational excitation of aluminium hydroxide by helium

2018 ◽  
Vol 480 (4) ◽  
pp. 5412-5418 ◽  
Author(s):  
Manel Naouai ◽  
Faouzi Najar ◽  
Cheikh Tidiane Bop ◽  
Kamel Hammami
Keyword(s):  
Cross Sections ◽  
Aluminium Hydroxide ◽  
Rate Coefficients ◽  
Rotational Excitation
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