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Mean excitation energies for molecular ions

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The essential material constant that determines the bulk of the stopping power of high energy projectiles, the mean excitation energy, is calculated for a range of smaller molecular ions using the RPA method. It is demonstrated that the mean excitation energy of both molecules and atoms increase with ionic charge. However, while the mean excitation energies of atoms also increase with atomic number, the opposite is the case for mean excitation energies for molecules and molecular ions. The origin of these effects is explained by considering the spectral representation of the excited state contributing to the mean excitation energy.
OriginalsprogEngelsk
TidsskriftNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Vol/bind394
Sider (fra-til)73-80
Antal sider8
ISSN0168-583X
DOI
StatusUdgivet - 2017

ID: 170148318