• On optimal designing of low frequency polychromatic fields for facile photo-dissociation of model diatomic molecules

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      https://www.ias.ac.in/article/fulltext/jcsc/121/05/0757-0766

    • Keywords

       

      Photodissociation; TDFGH; genetic algorithm; time dependent Hellmann-Feynmann theorem; quantum phase space.

    • Abstract

       

      The dissociation of a diatomic molecule in low frequency polychromatic fields of moderate intensities is studied. Genetic Algorithm is invoked to search out a set of four optimal non-resonant frequencies ($\omega_1$ - $\omega_4$), intensities ($\epsilon_1$ - $\epsilon_4$) the and phase angles ($\delta_1 - \delta_4$), for achieving a facile photo dissociation. Time-dependent Hellmann-Feynman theorem is used to gain insight into the frequency resolved energy absorption pattern. The ‘quantum phase space’ structures indicate occurrence of bond breaking dynamics akin to the classical one.

    • Author Affiliations

       

      S Ghosh1 K Maji1 R Sharma1 S P Bhattacharyya1

      1. Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032
    • Dates

       
  • Journal of Chemical Sciences | News

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