Infinite order sudden

Let us consider first quantum J-diffusion. It is carried out by purely non-adiabatic collisions realized for anc is the average rotational frequency. A semiclassical analogue of the infinite-order sudden... 

Snider R. F., Coombe D. A. Kinetic cross sections in the infinite order sudden approximation, J. Phys. Chem. 86, 1164-74 (1982). 

Goldflam R., Green S., Kouri D. J. Infinite order sudden approximation for rotational energy transfer in gaseous mixtures, J. Chem. Phys. 67, 4149-61, (1977). 

Maxwellian distribution 129 infinite-order sudden (IOS) approximation 155-6 semi-classical calculation 136-7 Sack s model rotational relaxation 19 strong collision model 219 scattering see isotropic scattering spectra ... 

Infinite-order sudden approximation (IOSA), electron nuclear dynamics (END), molecular systems, 345-349 Initial relaxation direction (IRD), direct molecular dynamics, theoretical background, 359-361 Inorganic compounds, loop construction, photochemical reactions, 481-482 In-phase states ... 

By using this approach, it is possible to calculate vibrational state-selected cross-sections from minimal END trajectories obtained with a classical description of the nuclei. We have studied vibrationally excited H2(v) molecules produced in collisions with 30-eV protons [42,43]. The relevant experiments were performed by Toennies et al. [46] with comparisons to theoretical studies using the trajectory surface hopping model [11,47] (TSHM). This system has also stimulated a quantum mechanical study [48] using diatomics-in-molecule (DIM) surfaces [49] and invoking the infinite-order sudden approximation (IOSA). 

Atabek, O., Beswick, J.A., and Delgado-Barrio, G. (1985). A test of the rotational infinite order sudden approximation in molecular fragmentation, J. Chem. Phys. 83, 2954-58. 

Delgado-Barrio, G., Mareca, P., Villarreal, P., Cortina, A.M., and Miret-Artes, S. (1986). A close-coupling infinite order sudden approximation (IOSA) to study vibrational predissociation of the Hel2 van der Waals molecule, J. Chem. Phys. 84, 4268-4271. 

Grinberg, H., Freed, K.F., and Williams, C.J. (1987). Three-dimensional analytical quantum mechanical theory for triatomic photodissociation Role of angle dependent dissociative surfaces on rotational and angular distributions in the rotational infinite order sudden limit, J. Chem. Phys. 86, 5456-5478. 

Kulander, K.C. and Light, J.C. (1986). Theory of polyatomic photodissociation in the reactive infinite order sudden approximation Application to the Rydberg states of H3, J. Chem. Phys. 85, 1938-1949. 

A. Lagana, A. Aguilar, X. Gimenez, and J. M. Lucas,/. Chem. Phys., 95, 2218 (1991). About the Convergence of Reactive Infinite Order Sudden Calculations on Parallel Computers. 

Resonance Phenomena in Quantal Reactive Infinite-Order Sudden Calculations... 

Z. H. Zhang, N. Abusalbi, M. Baer, D. J. Kouri, and J. Jellinek, Resonance phenomena in quantal reactive infinite-order sudden calculations, ACS Symp. Ser. 263 457 (1984). 

Semiclassical Perturbation—Infinite Order Sudden Approximation. 

Going beyond statistical approximations to more dynamically based treatments opens the door to a wide variety of possibilities, from simple approximate models to more accurate treatments that are capable (with sufficient effort) of arbitrary accuracy. Here I note one particularly simple approximate model that has been developed and applied to a variety of different dynamical phenomena, namely the semiclassical perturbation-infinite order sudden (SCP-IOS) model. ... 

Such an approximation, which is a derivative of the exact formalism presented by Kuppermann Schatz and Baer (KSB) [3] is described in this paper. Use is made of the Infinite order sudden approximation (lOSA) as applied in the inelastic case but contains significant changes whereas in the inelastic case one has to treat one arrangement channel at a time, in the case of exchange at least two channels are... 

While only exact ID calculations are feasible for the present time, approximate 3D quantum treatments can be used. The Infinite Order Sudden Approximation (lOSA) appears particularly well suited to study the dissociation of a heavy diatomic molecule collided by a light atom ... 

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