arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0904.2107physics.atom-ph
收藏

~(88)Sr ~+离子光频标的黑体辐射位移

Blackbody-radiation shift in a 88Sr+ ion optical frequency standard

Dansha Jiang, Bindiya Arora, M. S. Safronova, Charles W. Clark

摘要:

本文用相对论全阶方法计算了室温下~(88)Sr ~+5s ~(-4)d_{5/2}钟跃迁的黑体辐射(BBR)位移为0.250(9)Hz。BBR漂移是基于~(88)Sr ~+俘获离子的光频标不确定度预算的主要组成部分。给出了5 s和4 d_{5/2}能级的标量极化率以及4 d_{5/2}能级的张量极化率,并对它们的不确定度进行了评估。计算了4个d_{3/2}、4个d_{5/2}、5个p_{1/2}和5个p_{3/2}态的寿命,并与实验值进行了比较。

英文摘要:

The blackbody radiation (BBR) shift of the 5s - 4d_{5/2} clock transition in 88Sr+ is calculated to be 0.250(9) Hz at room temperature, T=300K, using the relativistic all-order method where all single and double excitations of the Dirac-Fock wave function are included to all orders of perturbation theory. The BBR shift is a major component in the uncertainty budget of the optical frequency standard based on the 88Sr+ trapped ion. The scalar polarizabilities of the 5s and 4d_{5/2} levels, as well as the tensor polarizability of the 4d_{5/2} level, are presented together with the evaluation of their uncertainties. The lifetimes of the 4d_{3/2}, 4d_{5/2}, 5p_{1/2}, and 5p_{3/2} states are calculated and compared with experimental values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑