科研之友
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摘要
We calculate the nonadiabatic binding energy and geometry of the weakly bound state of e(+)Na. We use the Peach model potential, which includes both the dipole and an effective quadrupole term in the polarization, to describe the interaction of the electron and positron with the ion core. The effective three-body Schrodinger equation is solved with the finite element method. Because the model potential gives rise to three spurious states, the true ground state of e(+)Na is embedded in a dense spectrum of spurious states. We develop a method for extracting the correct ground state for e(+)Na, even when the energy is nearly degenerate with a spurious level. The calculated value for the binding energy is consistent with other calculations.
- 出版日期2010-6-28
