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Helium atom in intense and superintense laser fields: A new theoretical approach

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Abstract

A quantum hydrodynamical study is made of the dynamical changes of a helium atom interacting with lasers of two different intensities, but having the same frequency. Under the intense laser field, electron density oozes out of the helium atom by absorbing laser photons and getting promoted to higher excited states including the continuum. Under the superintense field, electron density partly moves away from the helium nucleus but remains in the “quasi-bound” dressed states along with the laser field, thus suppressing ionization.

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Authors and Affiliations

  1. Theoretical Chemistry Group, Department of Chemistry, Panjab University, 160 014, Chandigarh, India

    Bijoy Kr Dey & B M Deb

  2. the Jawaharlal Nehru Centre for Advanced Scientific Research, 560 064, Jakkur, Bangalore, India

    B M Deb

Authors
  1. Bijoy Kr Dey
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  2. B M Deb
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Dey, B.K., Deb, B.M. Helium atom in intense and superintense laser fields: A new theoretical approach. Pramana - J Phys 48, L849–L858 (1997). https://doi.org/10.1007/BF02845618

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  • DOI: https://doi.org/10.1007/BF02845618

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