高电荷态类硼离子^(2)P_(3/2)—^(2)P_(1/2)跃迁的实验和理论研究进展  

Experimental and theoretical research progress of^(2)P_(1/2)–^(2)P_(3/2)transitions of highly charged boron-like ions

作　　者：刘鑫 汶伟强[2] 李冀光 魏宝仁[1] 肖君 Liu Xin;Wen Wei-Qiang;Li Ji-Guang;Wei Bao-Ren;Xiao Jun(Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE)Institute of Modern Physics,Fudan University,Shanghai 200433,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Institute of Applied Physics and Computational Mathematics,Beijing 100088,China)

机构地区：[1]复旦大学现代物理研究所,核物理与离子束应用教育部重点实验室,上海200433 [2]中国科学院近代物理研究所,兰州730000 [3]北京应用物理与计算数学研究所,北京100088

出　　处：《物理学报》2024年第20期22-35,共14页Acta Physica Sinica

基　　金：国家重点研发计划(批准号:2022YFA1602504);国家自然科学基金(批准号:12374228,12393824,12474250)资助的课题.

摘　　要：高电荷态离子(highly charged ion,HCI)的精细结构及辐射跃迁性质的精确测量不仅可以检验基本物理模型,包括:强场量子电动力学(quantum electrodynamics,QED)效应、电子关联效应、相对论效应、原子核效应等,而且能够为天体物理和聚变等离子体物理提供关键原子物理参数.相对于研究较多的类氢和类锂离子体系,类硼离子的精细结构禁戒跃迁的相对论效应和QED效应的贡献很大,高精度实验测量与理论计算为进一步检验多电子体系的基本物理模型提供了重要途径.此外,类硼离子也被认为是最佳的高电荷态离子光钟候选体系.本文主要介绍了类硼离子基态^(2)P_(3/2)—^(2)P_(1/2)跃迁的实验和理论研究最新进展,概述了其精细结构和超精细结构的研究现状,并讨论了使用电子束离子阱结合高分辨光谱学实验技术开展类硼离子超精细分裂实验测量的方案,为未来开展类硼离子超精细分裂实验研究并在更高精度上检验QED效应,提取原子核磁化分布半径,检验相关的核结构模型等研究提供了参考.The precise measurement of the fine structure and radiative transition properties of highly charged ions(HCI)is essential for testing fundamental physical models,including strong-field quantum electrodynamics(QED)effects,electron correlation effects,relativistic effects,and nuclear effects.These measurements also provide critical atomic physics parameters for astrophysics and fusion plasma physics.Compared with the extensively studied hydrogen-like and lithium-like ion systems,boron-like ions exhibit significant contributions in terms of relativistic and QED effects in their fine structure forbidden transitions.High-precision experimental measurements and theoretical calculations of these systems provide important avenues for further testing fundamental physical models in multi-electron systems.Additionally,boron-like ions are considered promising candidates for HCI optical clocks.This paper presents the latest advancements in experimental and theoretical research on the ground state^(2)P_(3/2)—^(2)P_(1/2)transition in boron-like ions,and summarizes the current understanding of their fine and hyperfine structures.It also discusses a proposed experimental setup for measuring the hyperfine splitting of boron-like ions by using an electron beam ion trap combined with highresolution spectroscopy.This proposal aims to provide a reference for future experimental research on the hyperfine splitting of boron-like ions,to test the QED effects with higher precision,extract the radius of nuclear magnetization distribution,and validate relevant nuclear structure models.

关 键 词：高电荷态离子 超精细结构 量子电动力学 高电荷态离子光钟 

分 类 号：O56[理学—原子与分子物理]