CALCULATION OF HO2 DENSITY OF STATES ON THREE POTENTIAL ENERGY SURFACES

2010 ◽  
Vol 09 (03) ◽  
pp. 653-665 ◽  
Author(s):  
H. ZHANG ◽  
S. C. SMITH
Keyword(s):  
Potential Energy ◽  
Ab Initio ◽  
Density Of States ◽  
Potential Energy Surfaces ◽  
Chem Phys ◽  
Many Body ◽  
Filter Diagonalization ◽  
Harmonic Density ◽  
Energy Surfaces ◽  
Semi Empirical

Density of states (DOS) in both bound and unimolecular dissociation regime for HO2 system have been calculated quantum mechanically by Lanczos homogeneous filter diagonalization (LHFD) method. Three potential energy surfaces are explored and the results are contrasted for the total angular momentum J = 0 density of states. While two ab initio potential energy surfaces (PESs) (TU PES, J Chem Phys, 115:3621 and XXZLG PES, J Chem Phys122:244) produce the DOSs which are in fairly good agreement, the semi-empirical double many-body expansion (DMBE) IV PES (J Phys Chem94:8073) generates the much higher DOSs in higher energy range. The quantum mechanical DOSs are also compared with Troe et al.'s results from harmonic density, semiclassical density and their early density of states on the same TU ab initio surface.

Erratum: “Ab initio computed diabatic potential energy surfaces of OH–HCl” [J. Chem. Phys. 122, 244325 (2005)]

2007 ◽  
Vol 126 (7) ◽  
pp. 079902 ◽  
Author(s):  
Paul E. S. Wormer ◽  
Jacek A. Kłos ◽  
Gerrit C. Groenenboom ◽  
Ad van der Avoird
Keyword(s):  
Potential Energy ◽  
Ab Initio ◽  
Potential Energy Surfaces ◽  
Chem Phys ◽  
Energy Surfaces

scholarly journals Dynamics of chemical reactions of astrophysical interest

1997 ◽  
Vol 178 ◽  
pp. 271-280 ◽  
Author(s):  
M. Alagia ◽  
N. Balucani ◽  
L. Cartechini ◽  
P. Casavecchia ◽  
G.G. Volpi
Keyword(s):  
Potential Energy ◽  
Ab Initio ◽  
Chemical Reactions ◽  
Potential Energy Surfaces ◽  
Experimental Results ◽  
Empirical Potential ◽  
Beam Scattering ◽  
Scattering Technique ◽  
Energy Surfaces ◽  
Semi Empirical

The dynamics of the astrophysically relevant reactions OH + H2,OH+CO,N(2D)+C2H2 and O(1D)+H2 are studied using the crossed beam scattering technique. Comparisons of the experimental results with those of dynamics calculations on ab initio and semi-empirical potential energy surfaces are discussed.

scholarly journals Publisher’s Note: “Ab initio potential energy surfaces for NH(Σ3−)−NH(Σ3−) with analytical long range” [J. Chem. Phys. 131, 224314 (2009)]

2010 ◽  
Vol 132 (2) ◽  
pp. 029902
Author(s):  
Liesbeth M. C. Janssen ◽  
Gerrit C. Groenenboom ◽  
Ad van der Avoird ◽  
Piotr S. Żuchowski ◽  
Rafał Podeszwa
Keyword(s):  
Potential Energy ◽  
Ab Initio ◽  
Long Range ◽  
Potential Energy Surfaces ◽  
Chem Phys ◽  
Energy Surfaces
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