Abstract
Very accurate quantum mechanical calculations of the first five vibrational states of the He4 He+3 molecular ion are reported. The calculations have been performed explicitly including the coupling of the electronic and nuclear motions [i.e., without assuming the Born-Oppenheimer (BO) approximation]. The nonrelativistic non-BO wave functions were used to calculate the α2 relativistic mass velocity, Darwin, and spin-spin interaction corrections. For the lowest vibrational transition, whose experimental energy is established with high precision, the calculated and the experimental results differ by only 0.16 cm-1.
Original language | English (US) |
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Article number | 052506 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 76 |
Issue number | 5 |
DOIs | |
State | Published - Nov 14 2007 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics