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高电荷类镍离子亚稳态电子态发射随时间演化的高分辨率X射线光谱。

High resolution X-ray spectra of the time evolution of emission from metastable electronic states of highly charged Ni-like ions.

作者信息

Burke Timothy, Takacs Endre, Hosier Adam, O'Neil Galen, Tan Joseph, Staiger Hunter, Naing Aung, Marler Joan, Ralchenko Yuri

机构信息

Department of Physics and Astronomy, Clemson University, Clemson, SC 29634 USA.

National Institute of Standards and Technology, Gaithersburg, MD 20899 USA.

出版信息

Eur Phys J D At Mol Opt Phys. 2024;78(6):78. doi: 10.1140/epjd/s10053-024-00872-0. Epub 2024 Jun 25.

DOI:10.1140/epjd/s10053-024-00872-0
PMID:38939723
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11199303/
Abstract

ABSTRACT

Metastable levels of highly charged ions that can only decay via highly forbidden transitions can have a significant effect on the properties of high temperature plasmas. For example, the highly forbidden 3d - 3d 4 s magnetic octupole (M3) transition in nickel-like ions can result in a large metastable population of its upper level which can then be ionized by electrons of energies below the ground state ionization potential. We present a method to study metastable electronic states in highly charged ions that decay by x-ray emission in electron beam ion traps (EBIT). The time evolution of the emission intensity can be used to study the parameters of ionization balance dynamics and the lifetime of metastable states. The temporal and energy resolution of a new transition-edge sensor microcalorimeter array enables these studies at the National Institute of Standards and Technology EBIT.

GRAPHICAL ABSTRACT

NOMAD calculated time evolution of the ratio of the Ni-like and Co-like lines in Nd at varying electron densities compared with measured ratios.

摘要

摘要

只能通过高度禁戒跃迁衰变的高电荷离子的亚稳态能级会对高温等离子体的性质产生重大影响。例如，类镍离子中高度禁戒的3d - 3d 4s磁八极（M3）跃迁会导致其上能级出现大量亚稳态粒子，这些亚稳态粒子随后可被能量低于基态电离势的电子电离。我们提出了一种在电子束离子阱（EBIT）中研究通过X射线发射衰变的高电荷离子亚稳态电子态的方法。发射强度的时间演化可用于研究电离平衡动力学参数和亚稳态的寿命。一种新型的过渡边缘传感器微热量计阵列的时间和能量分辨率使得在美国国家标准与技术研究院的EBIT上能够进行这些研究。

图形摘要

NOMAD计算出的在不同电子密度下钕中类镍和类钴谱线比率的时间演化，与测量比率进行比较。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/60de141144e7/10053_2024_872_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/259118e699ea/10053_2024_872_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/29689874349b/10053_2024_872_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/97f026f2df84/10053_2024_872_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/4e8af22e63c9/10053_2024_872_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/f6d24fa2327b/10053_2024_872_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/a11bd6d4fd7a/10053_2024_872_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/60de141144e7/10053_2024_872_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/259118e699ea/10053_2024_872_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/29689874349b/10053_2024_872_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/97f026f2df84/10053_2024_872_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/4e8af22e63c9/10053_2024_872_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/f6d24fa2327b/10053_2024_872_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/a11bd6d4fd7a/10053_2024_872_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b5ce/11199303/60de141144e7/10053_2024_872_Fig7_HTML.jpg

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本文引用的文献

1
Infrared and visible laser spectroscopy for highly-charged Ni-like ions.用于高电荷类镍离子的红外和可见激光光谱学。
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A transition-edge sensor-based x-ray spectrometer for the study of highly charged ions at the National Institute of Standards and Technology electron beam ion trap.一种基于过渡边缘传感器的X射线光谱仪，用于美国国家标准与技术研究院电子束离子阱中高电荷离子的研究。
Rev Sci Instrum. 2019 Dec 1;90(12):123107. doi: 10.1063/1.5116717.
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