Complete Partial‐Wave Treatment of Compound‐State (Rotational Excitation) Resonances in Subthreshold Scattering of an Atom by a Diatomic Molecule

1970 ◽  
Vol 52 (2) ◽  
pp. 606-616 ◽  
Author(s):  
J. T. Muckerman ◽  
R. B. Bernstein
Keyword(s):  
Partial Wave ◽  
Diatomic Molecule ◽  
Rotational Excitation ◽  
Wave Treatment ◽  
Compound State

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.

scholarly journals Theoretical study on the partial wave cross sections of vibrational and rotational excitation for the collisions of He isotope with H2

2010 ◽  
Vol 59 (3) ◽  
pp. 1689
Author(s):  
Wang Xiao-Lu ◽  
Xu Mei ◽  
Linghu Rong-Feng ◽  
Sun Ke-Bin ◽  
Yang Xiang-Dong
Keyword(s):  
Partial Wave ◽  
Cross Sections ◽  
Theoretical Study ◽  
Rotational Excitation
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