Exact solutions for shell-confined hydrogen-like atoms: polarisabilities and Shannon entropies.

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Title: Exact solutions for shell-confined hydrogen-like atoms: polarisabilities and Shannon entropies.
Authors: Burrows, B. L.1 b.l.burrows@staffs.ac.uk, Cohen, M.2
Source: Molecular Physics. 1/20/2008, Vol. 106 Issue 2-4, p267-273. 7p. 4 Charts, 3 Graphs.
Subjects: Atoms, Polarizability (Electricity), Entropy, Schrödinger equation, Physics
Abstract: An idealised model to treat the effect of spherically confining the electron in a hydrogen-like atom is studied, where the potential is infinite in all space except for a spherical shell. The exact solution of the Schrödinger equation is obtained in terms of two independent solutions of the Kummer equations. It is found that, in some cases, it is necessary to use the standard Kummer M function and a non-standard second solution. In other cases we may use the Kummer U function and in a limiting case the two standard solutions of Bessel's equation. The effect of an imposed dipole field on the shell is treated using the first-order perturbation equation from which the polarisability can be calculated. In addition, the exact wavefunction is used to calculate the Shannon entropies of both position and momentum and it is shown that these measures give insight into the form of the wavefunction. [ABSTRACT FROM AUTHOR]
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  Data: <searchLink fieldCode="JN" term="%22Molecular+Physics%22">Molecular Physics</searchLink>. 1/20/2008, Vol. 106 Issue 2-4, p267-273. 7p. 4 Charts, 3 Graphs.
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  Data: An idealised model to treat the effect of spherically confining the electron in a hydrogen-like atom is studied, where the potential is infinite in all space except for a spherical shell. The exact solution of the Schrödinger equation is obtained in terms of two independent solutions of the Kummer equations. It is found that, in some cases, it is necessary to use the standard Kummer M function and a non-standard second solution. In other cases we may use the Kummer U function and in a limiting case the two standard solutions of Bessel's equation. The effect of an imposed dipole field on the shell is treated using the first-order perturbation equation from which the polarisability can be calculated. In addition, the exact wavefunction is used to calculate the Shannon entropies of both position and momentum and it is shown that these measures give insight into the form of the wavefunction. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Molecular Physics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/00268970701787864
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        Text: English
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        PageCount: 7
        StartPage: 267
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      – SubjectFull: Atoms
        Type: general
      – SubjectFull: Polarizability (Electricity)
        Type: general
      – SubjectFull: Entropy
        Type: general
      – SubjectFull: Schrödinger equation
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      – SubjectFull: Physics
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      – TitleFull: Exact solutions for shell-confined hydrogen-like atoms: polarisabilities and Shannon entropies.
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              Text: 1/20/2008
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