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arXiv · 0910.4516

Full two-electron calculations of antiproton collisions with molecular hydrogen

Armin Lühr·Alejandro Saenz
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Abstract

Total cross sections for single ionization and excitation of molecular hydrogen by antiproton impact are presented over a wide range of impact energy from 1 keV to 6.5 MeV. A nonpertubative time-dependent close-coupling method is applied to fully treat the correlated dynamics of the electrons. Good agreement is obtained between the present calculations and experimental measurements of single-ionization cross sections at high energies, whereas some discrepancies with the experiment are found around the maximum. The importance of the molecular geometry and a full two-electron description is demonstrated. The present findings provide benchmark results which might be useful for the development of molecular models.

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Armin Lühr, Alejandro Saenz. 2009-10-23. Full two-electron calculations of antiproton collisions with molecular hydrogen. https://doi.org/10.1103/physreva.81.010701

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