Complete 2 relativistic corrections to the pure vibrational non-Born-Oppenheimer energies of HeH+
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Date
2008
Authors
Stanke, Monika
KeĀødziera, Dariusz
Bubin, Sergiy
Adamowicz, Ludwik
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Journal ISSN
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Abstract
We report the implementation of the complete set of the lowest-order relativistic corrections of the order of
2 where is the fine structure constant for calculating vibrational states of diatomic molecular systems
within the framework that does not assume the Born-Oppenheimer approximation. To test the accuracy of the
approach we have performed calculations for all rotationless vibrational states also called pure vibrational
states or S states of the HeH+ ion in the ground electronic state. For the lowest transitions, where very precise
experimental results are available, an excellent agreement with the experimental values has been achieved
Description
Keywords
Research Subject Categories::NATURAL SCIENCES::Physics, non-Born-Oppenheimer energies of HeH+, Born-Oppenheimer approximation
Citation
Monika Stanke, Dariusz KJdziera, Sergiy Bubin, Ludwik Adamowicz; 2008; Complete 2 relativistic corrections to the pure vibrational non-Born-Oppenheimer energies of HeH+; PHYSICAL REVIEW A