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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Controlling dissociation by trapping trajectories in highly energetic states

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Author(s):
de Almeida, Jr., A. K. [1] ; Egydio de Carvalho, R. [1] ; de Lima, E. F. [2]
Total Authors: 3
Affiliation:
[1] Univ Estadual Paulista UNESP, Rio Claro, SP - Brazil
[2] Univ Fed Sao Carlos UFSCAR, Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS; v. 449, p. 101-110, MAY 1 2016.
Web of Science Citations: 1
Abstract

We consider the non-linear dynamics of a polar diatomic molecule under the action of laser-field interactions and in the presence of a dissipation mechanism, described by the classical damped and driven one-dimensional Morse oscillator. In the absence of laser fields and dissipation, the phase space consists of a negative-energy bound region and a positive-energy dissociative region. Laser-molecule interaction changes the phase space allowing transitions from the bound to the dissociative region through chaotic routes. We show that for a spatially dependent dipole force, resonances with positive energies allow the trapping of trajectories in pseudo-bound states. We also show that, upon the introduction of dissipation, there exist non-trivial point attractors as well as chaotic attractors, which capture the trajectories in pseudo-bound states. Consequently, in addition to the parameters associated with the laser-molecule interaction, the amplitude of the dissipation acts as a control parameter of the photo-dissociation dynamics. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 10/20276-2 - Interference of robust tori in the dynamics of non-linear systems
Grantee:Ricardo Egydio de Carvalho
Support Opportunities: Regular Research Grants
FAPESP's process: 14/23648-9 - Quantum control of ultracold matter
Grantee:Emanuel Fernandes de Lima
Support Opportunities: Regular Research Grants
FAPESP's process: 14/00334-9 - The 7th Chaotic Modeling & Simulation International Conference - CHAOS-2014
Grantee:Ricardo Egydio de Carvalho
Support Opportunities: Research Grants - Meeting - Abroad