具有工业和天体物理学意义的几条 Ti II 光谱线的实验和理论电子碰撞展宽参数

IF 1.7 Q3 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
Atoms Pub Date : 2024-07-09 DOI:10.3390/atoms12070035
L. Isidoro-García, I. de Andrés-García, Juan Porro, F. Fernández, Cristóbal Colón
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引用次数: 0

摘要

在几次激光诱导击穿实验中,将 Q 开关 Nd:YAG 激光器聚焦在铅钛合金样品上,以测量单电离钛的几条光谱线 (58) 的斯塔克参数,包括 3504.89 Å 和 3510.83 Å 线(我们在这两条线上获得了新的实验值和理论值)。激光诱导等离子体的诊断(电子密度和电子温度)是利用巴尔默 Hα 线(6562.7 Å)进行的。温度是通过波尔兹曼图技术,利用铅 I 的光谱线(对其明显的自吸收进行校正后)获得的。随后,使用 van Regemorter 提出的 Gaunt 因子和 Douglas H. Sampson 提出的 Gaunt 因子,用格里姆方法计算了几条谱线的斯塔克展宽参数。在后一种情况下,得到的数值与实验值非常接近。这使我们可以认为,在没有实验信息的情况下,使用桑普森提出的 Gaunt 因子对 Ti II 光谱线进行的计算更为精确。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental and Theoretical Electron Collision Broadening Parameters for Several Ti II Spectral Lines of Industrial and Astrophysical Interest
A Q-switched Nd:YAG laser was focused on the Pb–Ti alloy samples in several laser-induced breakdown experiments in order to measure the Stark parameters of several spectral lines (58) of singly ionized titanium, including the 3504.89 Å and 3510.83 Å lines (where we achieved new experimental and theoretical values). The diagnostics of the laser-induced plasmas (electron density and electron temperature) were performed using Balmer’s H alpha line (6562.7 Å). The temperatures were obtained by the Boltzmann plot technique with spectral lines of Pb I (after correction for its evident self-absorption). Subsequently, the calculations by the Griem approach of the Stark broadening parameters for several spectral lines were performed using the Gaunt factors proposed by van Regemorter and those proposed by Douglas H. Sampson. In the latter case, the values obtained were very close to the experimental values. This enables us to assume that the calculations performed for the spectral lines of Ti II, without experimental information, are more accurate using the Gaunt factors proposed by Sampson.
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来源期刊
Atoms
Atoms Physics and Astronomy-Nuclear and High Energy Physics
CiteScore
2.70
自引率
22.20%
发文量
128
审稿时长
8 weeks
期刊介绍: Atoms (ISSN 2218-2004) is an international and cross-disciplinary scholarly journal of scientific studies related to all aspects of the atom. It publishes reviews, regular research papers, and communications; there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles. There are, in addition, unique features of this journal: -manuscripts regarding research proposals and research ideas will be particularly welcomed. -computed data, program listings, and files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Scopes: -experimental and theoretical atomic, molecular, and nuclear physics, chemical physics -the study of atoms, molecules, nuclei and their interactions and constituents (protons, neutrons, and electrons) -quantum theory, applications and foundations -microparticles, clusters -exotic systems (muons, quarks, anti-matter) -atomic, molecular, and nuclear spectroscopy and collisions -nuclear energy (fusion and fission), radioactive decay -nuclear magnetic resonance (NMR) and electron spin resonance (ESR), hyperfine interactions -orbitals, valence and bonding behavior -atomic and molecular properties (energy levels, radiative properties, magnetic moments, collisional data) and photon interactions
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