On the influence of magnetic fields on level populations
文献类型：期刊论文
| 作者 | Qu ZQ(屈中权)1,2 ; Xu CL(胥成林)1,3; Zhang XY(张霄宇)1; Yan XL(闫晓理)1,3; Jin CL(金春兰)1,3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2006-08-21 |
| 卷号 | 370期号:4页码:1790-1796 |
| 关键词 | atomic processes line : formation polarization radiation mechanisms : non-thermal radiative transfer Sun : magnetic fields |
| ISSN号 | 0035-8711 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qu, ZQ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | The influence of magnetic fields on the energy level populations of atoms is firstly studied by analysing the Stokes profiles of Fe I 6302.5 forming in the solar magnetized atmosphere, with the aid of a departure factor defined to evaluate the deviation from the normal Boltzmann distribution without a magnetic field. This factor is directly related to the ratio of line-source function to the continuum one. The relationship between the departure and the magnetic field reveals an effect that the magnetic field induces an exponential increase in the level population of the lower level of Fe I 6302.5 (Lande factor g = 2.5) with the field strength. This indicates that the magnetic field can cause the redistribution of populations of those levels whose Land e factors are non-zero. Therefore, this effect should be included in the calculation of the statistical equilibrium. Secondly, an experiment utilizing the Hg5461 line in the laboratory on the Earth is carried out to reveal that the exponential relation is independent of variations in temperature, and the excitation is completely magneto-induced. Finally, the exponential relation is explained by taking account of the magnetic energy in the Boltzmann distribution. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STOKES PROFILE ANALYSIS ; OPTICAL TOMOGRAPHY ; WILSON DEPRESSION ; INVERSION ; SUNSPOT ; LINES ; STRATIFICATION |
| 收录类别 | SCI |
| 原文出处 | http://mnras.oxfordjournals.org/content/370/4/1790 |
| 语种 | 英语 |
| WOS记录号 | WOS:000239517300017 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6088]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.Yunnan Astronomical Observatory/National Astronomical Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.Max-Planck-Institute for Solar System Research (MPS), Max-Planck Street 2, D-37191 Katlenburg-Lindau, Germany 3.Graduate School of the Chinese Academy of Sciences, Zhongguancun, Beijing 100036, China |
| 推荐引用方式 GB/T 7714 | Qu ZQ,Xu CL,Zhang XY,et al. On the influence of magnetic fields on level populations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,370(4):1790-1796. |
| APA | Qu ZQ,Xu CL,Zhang XY,Yan XL,&Jin CL.(2006).On the influence of magnetic fields on level populations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,370(4),1790-1796. |
| MLA | Qu ZQ,et al."On the influence of magnetic fields on level populations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 370.4(2006):1790-1796. |
入库方式： OAI收割
来源：云南天文台
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