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- W2045462068 abstract "Electron capture and excitation in ${mathrm{O}}^{+}$${(}^{4}$S${,}^{2}$D${,}^{2}$P)+He collisions above 100 eV are studied theoretically by using a semiclassical molecular representation and electron capture in ${mathrm{He}}^{+}$+O${(}^{3}$P) collisions; excitation and deexcitation in ${mathrm{O}}^{+}$${(}^{4}$S)+Heensuremath{leftrightarrows}${mathrm{O}}^{+}$${(}^{2}$D)+He collisions at lower energies are studied by using a fully-quantum-mechanical molecular representation. At higher energies, nonadiabatic couplings are the driving forces that cause transitions. At collision energies below 10 eV, transitions are driven by spin-orbit couplings. At kilo-electron-volt energies, the contribution from metastable ${mathrm{O}}^{+}$${(}^{2}$D${,}^{2}$P) ions to electron capture is much larger than that from the ground ${mathrm{O}}^{+}$${(}^{4}$S) ions. At energies below 1 eV, the cross section for electron capture in ${mathrm{He}}^{+}$+O collisions is very small, with a magnitude of less than ${10}^{mathrm{ensuremath{-}}20}$ ${mathrm{cm}}^{2}$. The cross sections for the excitation-deexcitation of metastable ${mathrm{O}}^{+}$ ions are larger, with values near ${10}^{mathrm{ensuremath{-}}18}$ ${mathrm{cm}}^{2}$." @default.
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- W2045462068 title "Electron capture and excitation in collisions of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant=normal>O</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mo>(</mml:mo></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math><i>S</i><mml:math …" @default.
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- W2045462068 doi "https://doi.org/10.1103/physreva.50.4854" @default.
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