| Non-Born-Oppenheimer study of the muonic molecule ion 4Heμ^+ |
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| 作者姓名： | 杨航 吴孟山 张屹 史庭云 Kalman Varga 张俊义 |
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| 作者单位： | State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics;University of Chinese Academy of Sciences;Department of Physics and Astronomy |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.11704399);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB21030300);the National Key Research and Development Program of China(Grant No.2017YFA0304402)。 |
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| 摘 要： | Accurate non-Born-Oppenheimer variational calculations of all bound states of the positive muon molecular ion 4Heμ^+ have been performed using explicitly correlated Gaussian functions in conjunction with the global vectors.All the energies obtained are accurate in the order of 10-6 Hartree(1 Hartree=27.2114 eV).Compared with the binding energies obtained from calculations based on the Born-Oppenheimer potential with the mass-weighted adiabatic corrections(Chem.Phys.Lett.110487(1984)),the largest relative deviation is up to 15%.By analyzing the average interparticle distances and possibility distributions of interparticle distances of this system,it is confirmed that the Born-Oppenheimer approximation is reasonable for this system and that 4Heμ^+ can be regarded as a system of positive muon bound to a slightly distorted helium atom.
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| 关 键 词： | positive MUON VARIATIONAL calculation explicitly CORRELATED GAUSSIAN |
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