Puchalski M, Moro A M, Pachucki K
Institute of Theoretical Physics, Warsaw University, Hoza 69, 00-681 Warsaw, Poland.
Phys Rev Lett. 2006 Sep 29;97(13):133001. doi: 10.1103/PhysRevLett.97.133001. Epub 2006 Sep 25.
High precision calculation of the isotope shift of the 3(2)S(1/2)-2(2)S(1/2) transition in lithium is presented. The wave function and matrix elements of relativistic operators are obtained by using recursion relations. Apart from the relativistic contribution, we obtain the nuclear polarizability correction for 11Li. The resulting difference of the squared charge radii 11Li-7Li based on the measurements of Sánchez et al. [Phys. Rev. Lett. 96, 033002 (2006)10.1103/PhysRevLett.96.033002] is deltar(ch)(2)=0.157(81) fm(2), which significantly differs from the previous evaluation.
本文给出了锂中3(2)S(1/2)-2(2)S(1/2)跃迁同位素位移的高精度计算。通过使用递推关系得到了相对论算符的波函数和矩阵元。除相对论贡献外，我们还得到了11Li的核极化率修正。基于桑切斯等人的测量结果[《物理评论快报》96, 033002 (2006)10.1103/PhysRevLett.96.033002]，得出的11Li - 7Li电荷半径平方差为δr(ch)(2)=0.157(81) fm(2)，这与先前的评估结果有显著差异。
