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Critical stability and structural properties of screened two-electron system in Feshbach resonance state

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Abstract

The position (Er) and width (Γ) of the first S-symmetry Feshbach resonance state (FRS) of a two-electron Zee system bound via screened Coulomb interaction have been studied by adopting the soft wall strategy of the Stabilization method. Explicitly correlated Hylleraas type basis has been adopted under the variational framework to find the energy eigenstates. Critical nuclear charge (Zc) of the Zee system in FRS has been reported for different screening parameters (λ). Moreover different structural properties i.e. expectation values of radial functions and the inter-particle angles of the system have been estimated for different λ and Z.

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Authors and Affiliations

  1. Department of Physics, Aliah University, Newtown, Kolkata, 700 156, India

    Anjan Sadhukhan & Jayanta K. Saha

  2. Department of Physics, Adamas University, Barasat, Kolkata, 700 126, India

    Anjan Sadhukhan

  3. Belgharia Texmaco Estate School, Belgharia, Kolkata, 700 056, India

    Sayantan Dutta

Authors
  1. Anjan Sadhukhan
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  2. Sayantan Dutta
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  3. Jayanta K. Saha
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All the authors were involved in the preparation of the manuscript. All the authors have read and approved the final manuscript.

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Correspondence to Jayanta K. Saha.

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Sadhukhan, A., Dutta, S. & Saha, J.K. Critical stability and structural properties of screened two-electron system in Feshbach resonance state. Eur. Phys. J. D 73, 250 (2019). https://doi.org/10.1140/epjd/e2019-100400-5

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