测试强场量子电动力学：通过电子-离子复合光谱在铯类 Pb78+ 原子系统中验证至二阶
原子物理
2025-09-11 v2
摘要
一种低能储存环与超冷电子制冷器已与重离子加速器耦合，实现了对最重稀有电子离子进行高分辨率电子-离子碰撞光谱。本文测量了铯类 Pb78+ 离子的共振电子-离子复合，碰撞能范围为 9.3-16.5 eV，得出 Pb78+(2s^2 1S_0 - 2s 2p 3P_1) 激发能为 244.937(30) eV。该结果与最新（不够准确）的理论值 244.942(52) eV [Malyshev 等，Physical Review A 110, 062824 (2024)] 一致，该理论值通过严格应用强场量子电动力学至二阶计算得出。本次调查表明，进一步的技术改进可能将实验精度提高一个数量级。
引用
@article{arxiv.2502.15433,
title = {Testing strong-field QED to second-order in the highly correlated atomic system berylliumlike Pb78+ by electron-ion recombination spectroscopy},
author = {S. Schippers and C. Brandau and S. Fuchs and M. Lestinsky and S. X. Wang and C. Y. Zhang and N. R. Badnell and A. Borovik and M. Fogle and V. Hannen and Z. Harman and P. -M. Hillenbrand and E. B. Menz and Y. Zhang and Z. Andelkovic and F. Herfurth and R. Heß and A. Kalinin and C. Kozhuharov and C. Krantz and S. Litvinov and B. Lorentz and U. Spillmann and M. Steck and G. Vorobyev and D. Banaś and S. Fritzsche and E. Lindroth and X. Ma and A. Müller and R. Schuch and A. Surzhykov and M. Trassinelli and K. Ueberholz and C. Weinheimer and Th. Stöhlker},
journal= {arXiv preprint arXiv:2502.15433},
year = {2025}
}
备注
8 pages, 3 figures