Relativistic and QED corrections for the beryllium atom

被引:99
作者
Pachucki, K
Komasa, J
机构
[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
[2] Adam Mickiewicz Univ, Fac Chem, Quantum Chem Grp, PL-60780 Poznan, Poland
关键词
D O I
10.1103/PhysRevLett.92.213001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Complete relativistic and quantum electrodynamics corrections of order alpha(2) Ry and alpha(3) Ry are calculated for the ground state of the beryllium atom and its positive ion. A basis set of correlated Gaussian functions is used, with exponents optimized against nonrelativistic binding energies. The results for Bethe logarithms lnk(0)(Be)=5.750 34(3) and lnk(0)(Be+)=5.751 67(3) demonstrate the availability of high precision theoretical predictions for energy levels of the beryllium atom and light ions. Our recommended value of the ionization potential 75 192.514(80) cm(-1) agrees with equally accurate available experimental values.
引用
收藏
页码:213001 / 1
页数:4
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