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文摘
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分析多普勒展宽和多普勒频移的区别，讨论了弦积分的线形分布和高斯分布的差异，利用光谱多道分析仪测量了碳227．1 nm谱线的线形分布，通过选点拟合得出辐射粒子的离子温度和旋转速度径向分布。 |
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其他语种文摘
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The distinction between Doppler broadening and Doppler shift is analyzed, Doppler broadening locally results from the distribution of velocities of the emitting particles, the line width gives the information on temperature of emitting particles. Doppler shift results when the emitting particles have a bulk non random flow velocity in a particular direction, the drift of central wavelength gives the information on flow velocity of emitting particles, and the Doppler shift only drifts the profile of line without changing the width. The differences between Gaussian fitting and the distribution of chord-integral line shape have also been discussed. The distribution of CV227.1 nm spectral line shape has been derived with optical spectroscopic multichannel analyzer (OSMA), ion temperature and rotation velocity have been obtained from Doppler broadening and Doppler shift by Gaussian fitting. |
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来源
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光学学报
,2003,23(9):1115-1118 【核心库】
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关键词
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光谱学
;
等离子体
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多普勒展宽
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多普勒频移
;
高斯拟合
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地址
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1.
广州大学物理系, 广州, 510405
2.
中国科学院等离子体物理研究所, 合肥, 230031
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-2239 |
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学科
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物理学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1308495
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