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Mostrando ítems 11-20 de 126
Artículo
Scattering of low-energy electrons by polar molecules: An analytic approach
(American Physical Society, 1998)
The scattering of low-energy electrons by polar molecules is considered. The excitation to the rotational states in the sudden approximation and the effect of the Coulomb dipole force to all orders are taken into account. ...
Artículo
Residual properties of a two-level system
(American Institute of Physics Publising LLC, 1991)
The residual properties, after cooling from a high temperature to T=0 K, of a system of identical and independent two-level systems are analyzed. A general criterion to know whether a given cooling law will lead to a ...
Artículo
Relativistic Quantum Scattering of High Energy Fermions in the Presence of Phase Transition
(Elsevier, 1996)
We study the high energy behaviour of fermions hitting a general wall caused by a first-order phase transition. The wall profile is introduced through a general analytic function. The reflection coefficient is computed in ...
Tesis Doctoral
El transporte de carga en sólidos moleculares amorfos: un estudio mediante simulación de Monte-Carlo
(1993)
La invención de las técnicas electrográficas, que han dado lugar a lo que se conoce comercialmente como xerografía, ha supuesto una verdadera revolución en el campo del procesado de documentos puesto que es dicha técnica ...
Artículo
Brownian motion in a granular gas
(American Physical Society, 1999)
The dynamics of a heavy particle in a gas of much lighter particles is studied via the Boltzmann-Lorentz equation with inelastic collisions among all particles. A formal expansion in the ratio of gas to tagged particle ...
Tesis Doctoral
Simulación por ordenador de un modelo de cristal líquido dipolar
(1999-07-02)
En esta memoria abordamos el estudio, utilizando simulación en ordenador de la influencia de las interacciones dipolares en la formación y estabilización de fases de cristal líquido. Se ha utilizado el modelo de Gay-Berne, ...
Artículo
On the relation between algebraic and configuration space calculations of molecular vibrations
(Elsevier, 1996-03)
The relation between algebraic and traditional calculations of molecular vibrations is investigated. An explicit connection between interactions in configuration space and the corresponding algebraic interactions is established.
Artículo
Reorientation and coupling effects in polarized heavy ion fusion
(Elsevier, 1992)
A simple model to understand the reaction mechanisms in the fusion of polarized heavy ions based on tidal symmetry, the sudden approximation and barrier penetration is presented. The model is applied to 23Na+208Pb. The ...
Artículo
Relativistic current densities for bound spin-orbit partners and the longitudinal-transverse response in (e,ép) processes
(Elsevier, 1998-11-23)
Scalar, baryon and vector-current densities in coordinate and momentum space are calculated within a relativistic mean-field model. The role of the low components of the bound nucleon wave function is investigated in detail ...
Artículo
Signature inversion in semi-decoupled bands: Residual interaction between h9/2 protons and i13/2 neutrons
(Elsevier, 1997)
Semi-decoupled bands based on the πh9/2 ⊗ vi13/2 configuration are observed in 162Tm,164Tm and 174Ta. Spins assigned to these bands imply an inversion of the expected signature splitting, which is interpreted as being the ...