The crossed-beam scattering method in studies of ion-molecule reaction dynamics

2001 ◽  
Vol 212 (1-3) ◽  
pp. 413-443 ◽  
Author(s):  
Zdenek Herman
Keyword(s):  
Reaction Dynamics ◽  
Scattering Method ◽  
Molecule Reaction ◽  
Beam Scattering

Charge Transfer Between CO22+ and Ar or Ne at Collision Energies 3-10 eV

2003 ◽  
Vol 68 (1) ◽  
pp. 178-188 ◽  
Author(s):  
Libor Mrázek ◽  
Ján Žabka ◽  
Zdeněk Dolejšek ◽  
Zdeněk Herman
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Ground State ◽  
Scattering Method ◽  
Translational Energy ◽  
Centre Of Mass ◽  
Energy Distributions ◽  
Zener Model ◽  
Beam Scattering ◽  
Product Ions

The beam scattering method was used to investigate non-dissociative single-electron charge transfer between the molecular dication CO22+ and Ar or Ne at several collision energies between 3-10 eV (centre-of-mass, c.m.). Relative translational energy distributions of the product ions showed that in the reaction with Ar the CO2+ product was mainly formed in reactions of the ground state of the dication, CO22+(X3Σg-), leading to the excited states of the product CO2+(A2Πu) and CO2+(B2Σu+). In the reaction with Ne, the largest probability had the process from the reactant dication excited state CO22+(1Σg+) leading to the product ion ground state CO2+(X2Πg). Less probable were processes between the other excited states of the dication CO22+, (1∆g), (1Σu-), (3∆u), also leading to the product ion ground state CO2+(X2Πg). Using the Landau-Zener model of the reaction window, relative populations of the ground and excited states of the dication CO22+ in the reactant beam were roughly estimated as (X3Σg):(1∆g):(1Σg+):(1Σu-):(3∆u) = 1.0:0.6:0.5:0.25:0.25.

Dynamics of the ion-molecule reaction D2O+ (NH3, NH2) HD2O+ from crossed-beam scattering experiments

1988 ◽  
Vol 53 (10) ◽  
pp. 2168-2174 ◽  
Author(s):  
Jan Vančura ◽  
Zdeněk Herman
Keyword(s):  
Collision Energy ◽  
Intermediate Complex ◽  
Atom Transfer ◽  
Molecule Reaction ◽  
Scattering Experiment ◽  
Critical Configuration ◽  
Beam Scattering

Dynamics of the HD2O+ formation in the reaction of D2O+ and NH3 was investigated in a crossed-beam scattering experiment. At T = 1·5 eV (c.m.) the product is formed simultaneously by two different collision mechanisms, by a direct H-atom transfer and by the decomposition of an intermediate complex (D2O.NH3)+; the probabilities of the two mechanisms are about equal at this collision energy. The scattering makes it possible to suggest that in the critical configuration the intermediate complex is a prolate, near-linear species D2OH+.NH2.

An important step towards single-molecule reaction dynamics

2018 ◽  
Vol 61 (7) ◽  
pp. 761-762
Author(s):  
Yang Yang ◽  
Wenjing Hong
Keyword(s):  
Single Molecule ◽  
Reaction Dynamics ◽  
Molecule Reaction
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