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Your search keyword '"Manson, S"' showing total 14 results
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14 results on '"Manson, S"'

1. Spectral Properties of Confined Atoms.

Author

Dolmatov, V. K., Connerade, J. P., Lakshmi, A. P., and Manson, S. T.

Subjects
ATOMS, PHOTOIONIZATION, SPECTRUM analysis
Abstract

The changes in energy and photoionization spectra of atoms upon confinement by a spherical environment are explored theoretically. Two kinds of confinement are considered: an endohedral confinement, such as inside the bucky-ball C[sub 60], and an impenetrable spherical confinement of adjustable radius. We demonstrate modifications in the energy spectrum and electron correlation effects in confined atoms, the appearance, nature and origin of "confinement" resonances in photoionization spectra of such atoms, as well as new regularities in the periodic table for "compressed" atoms. These findings are of importance for basic and applied physics and chemistry of atoms, molecules, surfaces, etc. [ABSTRACT FROM AUTHOR]

Published
2002
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2. Photoionization of endohedrai atoms using R-matrix methods: Application to Xe@C6o.

Author

Gorczyca, T. W., Hasoglu, M. F., and Manson, S. T.

Subjects
*PHOTOIONIZATION, *ATOMS, *POTENTIAL theory (Physics), *R-matrices, *FULLERENES, *HAMILTONIAN systems, *PHASE shift (Nuclear physics)
Abstract

It is demonstrated that the effect of a static cage potential on the photoionization of endohedrally enclosed atoms can be incorporated into standard /¿-matrix calculations using one of two independent methods. For photoionization processes occurring entirely within the fullerene, the outer-region solutions can be modified by the additional cage potential to yield phase-shifted Coulomb functions that are matched to the inner-region R matrix. Alternatively, if the cage potential is contained within the /¿-matrix “box,” it can be directly incorporated into the formalism via simple one-electron integral contributions to the Hamiltonian, yielding a modified R matrix. Both methods are applied to the photoionization of Xe@C6o in the vicinity of the giant 4d → ∊f shape resonance and are found to be in excellent agreement with each other [ABSTRACT FROM AUTHOR]

Published
2012
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