Dielectronic Recombination of Very Heavy Lithiumlike Ions
Dielectronic Recombination of Very Heavy Lithiumlike Ions
复制标题
极重锂离子的双电子复合
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Z. Stachura
中科院分区：
文献类型：
--
作者：
C. Brandau;T. Bartsch;S. Böhm;C. Böhme;A. Hoffknecht;S. Kieslich;H. Knopp;S. Schippers;W. Shi;A. Müller;N. Grün;W. Scheid;T. Steih;F. Bosch;B. Franzke;C. Kozhuharov;A. Krämer;P. Mokler;F. Nolden;M. Steck;T. Stöhlker;Z. Stachura
综述了最重类锂离子双电子复合（DR）的测量方法。实验在GSI重离子储存环ESR上进行，利用电子冷却器作为电子靶。特别是讨论了Au ~（76）+和U ~（89）+低能双电子复合的结果。在0 ~ 400 eV能量范围内，我们发现了与Δn=0的2s 1/2→ 2 p 1/2，3/2核激发有关的双电子共振，实验结果只能在完全相对论处理下得到解释，并且对α2阶QED贡献以及原子核的有限尺寸敏感.
An overview of measurements of dielectronic recombination (DR) with the heaviest lithiumlike ions is presented. The experiments have been carried out at the heavy ion storage ring ESR at GSI utilizing the electron cooler as an electron target. In particular, results for low energy dielectronic recombination of Au76+ and U89+ are discussed. In the energy range of 0 to 400 eV which can be covered with our present set-up dielectronic resonances associated with Δn=0 core excitations from 2s1/2→2p1/2,3/2 were found. The experimental results can only be explained within a fully relativistic treatment and are sensitive to QED contributions of the order α2 as well as to the finite size of the atomic nucleus.