题名: 光纤阵列太阳光学望远镜偏振分析器设计
作者: 敦广涛
学位类别: 硕士
答辩日期: 2011-06-03
授予单位: 中国科学院研究生院(云南天文台)
授予地点: 北京
导师: 屈中权
关键词: 太阳磁场 ; 偏振分析器 ; 测量效率 ; 光纤阵列太阳光学望远镜 ; 光学开关
其他题名: The design of FASOT polarimeter
学位专业: 天体物理
中文摘要: 无论在形成太阳大气结构还是在太阳活动现象中,磁场发挥了至关重要的作用。特别是太阳大气中各种剧烈的活动现象都和太阳磁场有关,对其机制的研究成为太阳物理学前沿之一。高空间分辨率、高时间分辨率和高精度的太阳观测研究一直是太阳物理学研究的重要课题之一,这一切有赖于高精度的偏振测量。 本文第一章主要介绍太阳磁场的测量原理和测量方法,着重说明由Zeeman效应等产生的太阳光谱的偏振特性,以及如何利用这一特性进行磁场测量。第二章介绍偏振测量的主要仪器——偏振分析器。在详细介绍偏振光测量原理、偏振分析器的工作原理和偏振分析器测量效率之后,着重指出如何对偏振分析器进行优化。在介绍世界上已应用的十几种偏振分析器的设计方案和特性之后,我们在第三章中针对新一代光纤阵列太阳光学望远镜FASOT的特点和科学目标给出其偏振分析器的设计方案。我们的设计对若干条依照FASOT科学目标选定的谱线都具有很高的偏振测量效率,拥有优良的消色差性能,特别是光学开关技术的应用将大大担高偏振分析器的测量精度。
英文摘要: Magnetic field plays a crucial role in determining solar structure and triggering solar activities. It is believed that all kinds of the solar activities are associated with solar magnetic field, and the research for the mechanisms hidden becomes one of the frontiers in solar physics. High spatial resolution, high temporal resolution and high precision of the solar magnetic field observations has been always one of the important tasks, and this depends on suitable and precise spectrum polarimetry. In the first chapter of this thesis, the measurement principle and methods of the solar magnetic field are introduced, especially the Zeeman effect which produces the dominant polarization properties of solar spectrum. Analyzing the polarization characteristics produced by it becomes a main tool for diagnostic of the magnetic field. The second chapter is allocated to a variety of polarimeters used or to be used and their polarimetric e ciencies as well as optimization are emphasized. In the third chapter, we present the polarimeter design according to the scientic goals and characteristics of Fibre Arrayed Solar Optical Telescope(FASOT). It shows that the design has high polarimetric effi ciency at the selected lines, and excellent performance in dealing with errors. The application of optical switching technology greatly enhances the ccuracy of polarization measurement.
语种: 中文
学科主题: 天文学
内容类型: 学位论文
URI标识: [http://ir.ynao.ac.cn/handle/114a53/5121]  
Appears in Collections:云南天文台_光纤阵列太阳光学望远镜研究组

Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[敦广涛]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[敦广涛]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
版权所有@2019 - 中国科学院  运行维护:兰州文献情报中心
Powered by CSpace