Inelastic collisions between an atom and a diatomic molecule. II. H+H2 rotational excitation

1975 ◽  
Vol 63 (5) ◽  
pp. 1783-1796 ◽  
Author(s):  
B. H. Choi ◽  
K. T. Tang
Keyword(s):  
Diatomic Molecule ◽  
Inelastic Collisions ◽  
Rotational Excitation

Comparative experimental and theoretical study of the rotational excitation of CO by collision with ortho- and para-D2 molecules

2017 ◽  
Vol 19 (1) ◽  
pp. 189-195 ◽  
Author(s):  
T. Stoecklin ◽  
A. Faure ◽  
P. Jankowski ◽  
S. Chefdeville ◽  
A. Bergeat ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Inelastic Collisions ◽  
Quantum Mechanical ◽  
Rotational Excitation ◽  
Mechanical Investigation

A joint crossed beam and quantum mechanical investigation of the rotationally inelastic collisions of CO with ortho- and para-D2 molecules is reported.

Observation of Partial Wave Resonances in Low-Energy O2–H2 Inelastic Collisions

Science ◽  
2013 ◽  
Vol 341 (6150) ◽  
pp. 1094-1096 ◽  
Author(s):  
Simon Chefdeville ◽  
Yulia Kalugina ◽  
Sebastiaan Y. T. van de Meerakker ◽  
Christian Naulin ◽  
François Lique ◽  
...  
Keyword(s):  
Partial Wave ◽  
Cross Sections ◽  
Ground State ◽  
Total Angular Momentum ◽  
Inelastic Collisions ◽  
Quantum Mechanical ◽  
Quantum Scattering ◽  
Rotational Excitation ◽  
Collision Processes ◽  
Theoretical Results

Partial wave resonances predicted to occur in bimolecular collision processes have proven challenging to observe experimentally. Here, we report crossed-beam experiments and quantum-scattering calculations on inelastic collisions between ground-state O2 and H2 molecules that provide state-to-state cross sections for rotational excitation of O2 (rotational state N = 1, j = 0) to O2 (N = 1, j = 1) in the vicinity of the thermodynamic threshold at 3.96 centimeter−1. The close agreement between experimental and theoretical results confirms the classically forbidden character of this collision-induced transition, which occurs exclusively in a purely quantum mechanical regime via shape and Feshbach resonances arising from partial waves with total angular momentum (J) = 2 to 4.

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