| 用等离子体粒子能谱拟合温度的新方法 |
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| 引用本文： | 秦运文. 用等离子体粒子能谱拟合温度的新方法[J]. 核聚变与等离子体物理, 2001, 21(1): 49-52 |
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| 作者姓名： | 秦运文 |
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| 作者单位： | 核工业西南物理研究院, |
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| 摘 要： | 用最小二乘法拟合等离子体粒子能谱实验数据时，通常使拟合函数与实验能谱数据之间的误差平方和极小化。如果将能谱实验数据的对数拟合成直线以求得粒子温度，则最好对温度误差的平方和极小化。给出了这种拟合方法的计算公式，并对两种不同方法得到的结果进行了比较。
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| 关 键 词： | 粒子能谱 粒子温度 最小二乘法 误差平方和 极小化 等离子体 托马卡克等离子体诊断 |
| 文章编号： | 0254-6086(2001)01-0049-04 |
| 修稿时间： | 1999-08-02 |
NEW FITTING METHOD FOR TEMPERATURE FROM PLASMA PARTICLE ENERGY SPECTRA |
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| QIN Yun-wen. NEW FITTING METHOD FOR TEMPERATURE FROM PLASMA PARTICLE ENERGY SPECTRA[J]. Nuclear Fusion and Plasma Physics, 2001, 21(1): 49-52 |
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| Authors: | QIN Yun-wen |
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| Abstract: | Fitting a curve for an experimental energy spectrum of plasma particles with the least square method, a square error sum between the fitted curve and experimental spectrum data is usually minimized. However, if a straight line is fitted for logarithmic spectrum data to give the particle temperature, it is better to minimize the temperature square error sum. Formulas of such fitting are given and results obtained by minimizing different square error sums are compared. |
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| Keywords: | Particle energy spectrum Particle temperature Fitting method with minimum of square error sum |
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