Moment coupling in the interaction of atoms and their ions with a 3<Emphasis Type="Italic">d</Emphasis>-electron shell |
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Authors: | A V Kosarim B M Smirnov M Capitelli A Laricchiuta |
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Institution: | 1.Joint Institute for High Temperatures,Russian Academy of Sciences,Moscow,Russia;2.Department of Chemistry,University of Bari,Bari,Italy;3.IMIP-CNR,Bari,Italy |
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Abstract: | The moment coupling of an interacting ion and an atom with a 3d-electron shell is analyzed for the ground state of identical atoms and ions where resonant charge exchange proceeds with
transition of a 4s-electron. The interaction of the ion charge with the atom quadrupole moment is important for this system along with the exchange
interactions and spin-orbit interactions inside an isolated atom and an ion. The quadrupole moment for 3d-atoms in the ground states is evaluated. The hierarchy of interactions in a molecular ion is analyzed depending on ion-atom
distances and is compared with the standard Hund scheme. The resonant charge exchange proceeds effectively at separations
corresponding to an intermediate case between cases “a” and “c” of the Hund coupling scheme. |
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