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Benchmarking calculations of excitation energies and transition properties with spectroscopic accuracy of highly charged ions used for the fusion plasma and astrophysical plasma
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作者 张春雨 王凯 +5 位作者 司然 李金晴 宋昌仙 吴思捷 严碧霜 陈重阳 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第11期179-193,共15页
Atomic radiative data such as excitation energies, transition wavelengths, radiative rates, and level lifetimes with high precision are the essential parameters for the abundance analysis, simulation, and diagnostics ... Atomic radiative data such as excitation energies, transition wavelengths, radiative rates, and level lifetimes with high precision are the essential parameters for the abundance analysis, simulation, and diagnostics in fusion and astrophysical plasmas. In this work, we mainly focus on reviewing our two projects performed in the past decade. One is about the ions with Z■30 that are generally of astrophysical interest, and the other one is about the highly charged krypton(Z = 36)and tungsten(Z = 74) ions that are relevant in research of magnetic confinement fusion. Two different and independent methods, namely, multiconfiguration Dirac–Hartree–Fock(MCDHF) and the relativistic many-body perturbation theory(RMBPT) are usually used in our studies. As a complement/extension to our previous works for highly charged tungsten ions with open M-shell and open N-shell, we also mainly focus on presenting and discussing our complete RMBPT and MCDHF calculations for the excitation energies, wavelengths, electric dipole(E1), magnetic dipole(M1), electric quadrupole(E2), and magnetic quadrupole(M2) transition properties, and level lifetimes for the lowest 148 levels belonging to the 3l3configurations in Al-like W61+. We also summarize the uncertainties of our systematical theoretical calculations, by cross-checking/validating our datasets from our RMBPT and MCDHF calculations, and by detailed comparisons with available accurate observations and other theoretical calculations. The data are openly available in Science Data Bank at https://doi.org/10.57760/sciencedb.10569. 展开更多
关键词 energy levels transition rates highly charged ions relativistic many-body perturbation theory(RMBPT) multi-configuration Dirac-Hartree-Fock(MCDHF) benchmarking calculations exci-tation energies spectroscopic accuracy
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囚禁单离子的量子阻尼运动
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作者 李金晴 罗云荣 海文华 《物理学报》 SCIE EI CAS CSCD 北大核心 2017年第23期112-120,共9页
用包含偶极和四极虚势能项的非厄米哈密顿算符来描述Paul阱中囚禁阻尼单离子在静电场下的量子运动.通过导出和分析系统的精确解,得到在PT对称和不对称情形下的不同实能谱与稳定量子态,以及PT不对称情形的虚能谱和衰减量子态,同时给出相... 用包含偶极和四极虚势能项的非厄米哈密顿算符来描述Paul阱中囚禁阻尼单离子在静电场下的量子运动.通过导出和分析系统的精确解,得到在PT对称和不对称情形下的不同实能谱与稳定量子态,以及PT不对称情形的虚能谱和衰减量子态,同时给出相应于不同态的参数区域和存活概率.结果发现该非厄米系统外场参数能惟一确定量子稳定态并导致波函数形态变化,据此提出非相干操控相应量子跃迁的方法.让量子态衰减导致的离子位置期待值的衰减与经典阻尼谐振子的衰减一致,得到虚势能参数与经典阻尼参数的对应关系.所得结果将进一步丰富具有广泛应用背景的囚禁离子动力学. 展开更多
关键词 囚禁离子 阻尼运动 非厄米哈密顿 存活概率
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“@马鞍山发布”运营与传播策略分析
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作者 李金晴 周正昂 《新闻研究导刊》 2021年第14期115-117,共3页
在人民网舆情监测中心发布的《2020年度政务微博影响力报告》中,“@马鞍山发布”政务微博作为真诚服务市民、充分体现官微矩阵协同作用的市县级政务微博典范被提出。本文运用网络数据采集与内容分析、访谈等方法,重点探讨“@马鞍山发布... 在人民网舆情监测中心发布的《2020年度政务微博影响力报告》中,“@马鞍山发布”政务微博作为真诚服务市民、充分体现官微矩阵协同作用的市县级政务微博典范被提出。本文运用网络数据采集与内容分析、访谈等方法,重点探讨“@马鞍山发布”的组织运营模式、内容特征、传播策略及发展方向。本研究对当下市县级政务微博进一步提升政务服务能力、引导舆论健康有序进行等问题给予了解答,具有一定的现实意义和参考价值。 展开更多
关键词 政务微博 “@马鞍山发布” 运营 传播策略 政务新媒体
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