Classical study of the rovibrational dynamics of a polar diatomic molecule in static electric fields

  1. Iñarrea, M. 1
  2. Salas, J.P. 1
  3. González-Férez, R. 22
  4. Schmelcher, P. 34
  1. 1 Universidad de La Rioja
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    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Granada
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    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  3. 3 Heidelberg University
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    Heidelberg University

    Heidelberg, Alemania

    ROR https://ror.org/038t36y30

  4. 4 Heidelberg Institute for Theoretical Studies
    info

    Heidelberg Institute for Theoretical Studies

    Heidelberg, Alemania

    ROR https://ror.org/01f7bcy98

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Revista:
Physics Letters, Section A: General, Atomic and Solid State Physics

ISSN: 0375-9601

Año de publicación: 2010

Volumen: 374

Número: 3

Páginas: 457-465

Tipo: Artículo

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DOI: 10.1016/J.PHYSLETA.2009.11.015 SCOPUS: 2-s2.0-72049129670 WoS: WOS:000273871600012 GOOGLE SCHOLAR

Otras publicaciones en: Physics Letters, Section A: General, Atomic and Solid State Physics

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Resumen

We study the classical dynamics of a polar diatomic molecule in the presence of a strong static homogeneous electric field. Our full rovibrational investigation includes the interaction with the field due to the permanent electric dipole moment and the polarizability of the molecule. Using the LiCs molecule as a prototype, we explore the stability of the equilibrium points and their bifurcations as the field strength is increased. The phase space structure and its dependence on the energy and field strength are analyzed in detail. We demonstrate that depending on the field strength and on the energy, the phase space is characterized either by regular features or by small stochastic layers of chaotic motion. © 2009 Elsevier B.V. All rights reserved.