Ionization potential of 9Be calculated including nuclear motion and relativistic corrections
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Date
2007
Authors
Stanke, Monika
KeĀødziera, Dariusz
Bubin, Sergiy
Adamowicz, Ludwik
Journal Title
Journal ISSN
Volume Title
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Abstract
Variational calculations employing explicitly correlated Gaussian functions have been performed for the
ground states of 9Be and 9Be+ including the nuclear motion i.e., without assuming the Born-Oppenheimer
BO approximation . An approach based on the analytical energy gradient calculated with respect to the
Gaussian exponential parameters was employed, leading to energies of the two systems noticeably improved
over those found in the recent paper of Pachucki and Komasa Phys. Rev. A 73, 052502 2006 . The non-BO
wave functions were used to calculate the 2 relativistic corrections =e2 / c . With those corrections and the
3 and 4 corrections taken from Pachucki and Komasa, a new value of the ionization potential IP of 9Be was
determined. It agrees very well with the most recent experimental IP
Description
Keywords
Research Subject Categories::NATURAL SCIENCES::Physics, Variational calculations
Citation
Monika Stanke, Dariusz KeĀødziera, Sergiy Bubin, Ludwik Adamowicz; 2007; Ionization potential of 9Be calculated including nuclear motion and relativistic corrections; PHYSICAL REVIEW A