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

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 21期

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

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页码：213001 / 1

页数：4

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