scholarly journals The rotational excitation of HCN and HNC by He: temperature dependence of the collisional rate coefficients

2010 ◽  
Vol 406 (4) ◽  
pp. 2488-2492 ◽  
Author(s):  
F. Dumouchel ◽  
A. Faure ◽  
F. Lique
Keyword(s):  
Temperature Dependence ◽  
Rate Coefficients ◽  
Rotational Excitation ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

Calculations of fine-structure resolved collisional rate coefficients for the NH(X3Σ−)-He system

2011 ◽  
Vol 134 (2) ◽  
pp. 024305 ◽  
Author(s):  
Robert Toboła ◽  
Fabien Dumouchel ◽  
Jacek Kłos ◽  
François Lique
Keyword(s):  
Fine Structure ◽  
Rate Coefficients ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

Collisional-Rate Coefficients for Sodiumlike Ar viii Ions

1972 ◽  
Vol 6 (1) ◽  
pp. 38-44 ◽  
Author(s):  
R. U. Datla ◽  
H. -J. Kunze ◽  
D. Petrini
Keyword(s):  
Rate Coefficients ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

Collisional excitation of H2S by molecular hydrogen

2020 ◽  
Vol 494 (4) ◽  
pp. 5239-5243
Author(s):  
Paul J Dagdigian
Keyword(s):  
Energy Surface ◽  
Rate Coefficients ◽  
Cluster Method ◽  
Quantum Scattering ◽  
Collisional Excitation ◽  
Close Coupling ◽  
Accurate Knowledge ◽  
Explicitly Correlated ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

ABSTRACT Accurate estimates of the abundance of H2S, and inferences about the unmeasured H2 density, require accurate knowledge of radiative and collisional rate coefficients. Time-independent close-coupling quantum scattering calculations have been employed to compute rate coefficients for (de-)excitation of para- and ortho-H2S in collisions with para- and ortho-H2. These calculations utilized a potential energy surface for the interaction of H2S with H2 recently computed by the explicitly correlated CCSD(T)-F12a coupled-cluster method. Rate coefficients for temperatures ranging from 5 to 500 K were calculated for all transitions among the first 19 rotational levels of H2S, whose energies are less than or equal to 405 K. These rate coefficients are compared with previous estimates of these quantities.

Rotational (de)-excitation of C5 by collision with He at low temperature

2021 ◽  
Author(s):  
A. Chefai ◽  
M. Ben Khalifa ◽  
F. Khadri ◽  
K. Hammami
Keyword(s):  
Low Temperature ◽  
Interstellar Medium ◽  
Rate Coefficients ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

An appropriate estimation of the abundance of the observed C5 radical in the interstellar medium requires accurate radiative and collisional rate coefficients.

scholarly journals Measurements of Collisional Rate Coefficients in Laboratory Plasmas

1972 ◽  
Vol 14 ◽  
pp. 565-583 ◽  
Author(s):  
H.-J. Kunze
Keyword(s):  
Theoretical Calculations ◽  
Experimental Results ◽  
Experimental Techniques ◽  
Rate Coefficients ◽  
Line Radiation ◽  
Laboratory Plasmas ◽  
Plasma Device ◽  
Collisional Rate Coefficients ◽  
Collisional Rate

AbstractLine radiation emitted by highly ionized atoms embedded in hot laboratory plasmas can be utilized to obtain collisional rate coefficients for excitation and ionization. After a discussion of the principles underlying these measurements, the plasma device mostly used is explained briefly as are the various experimental techniques. All experimental results obtained so far are finally discussed and compared with theoretical calculations where possible.

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