Preliminary application of maximum likelihood method in HL-2A Thomson scattering system

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2010, Vol. 30 ›› Issue (3): 203-207.

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Preliminary application of maximum likelihood method in HL-2A Thomson scattering system

YAO Ke, HUANG Yuan, FENG Zhen, LIU Chun-hua, NIE Lin, LI En-ping

(1. Southwestern Institute of Physics, Chengdu 610041； 2. University of Science and Technology of China, Hefei 230026)

Received:2009-12-16 Revised:2010-04-26 Online:2010-09-15 Published:2011-08-18

最大似然法在HL-2A汤姆逊散射中的初步应用

姚可, 黄渊, 冯震, 刘春华, 聂林, 李恩平

(1．核工业西南物理研究院，成都 60041；2．中国科学技术大学，合肥 230026)

作者简介:姚可(1983-)，男，重庆市人，在读硕士研究生，从事高温等离子体激光诊断工作。
基金资助:
国家ITER计划专项(2009GB107002)

Abstract

Abstract: Maximum likelihood method to process the data of HL-2A Thomson scattering system is presented. Using mathematical statistics, this method maximizes the possibility of the likeness between the theoretical data and the observed data, so that we could get more accurate result. It has been proved to be applicable in comparison with that of the ratios method, and some of the drawbacks in ratios method do not exist in this new one.

Key words: font-family: "Times New Roman", mso-fareast-font-family: 方正宋三简体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">Maximum likelihood method, Data processing, Thomson scattering

摘要：

介绍了一种处理HL-2A汤姆逊散射原始实验数据的新方法——最大似然法。该方法用数理统计的手段，通过使理论推导出的数据与实际采集到的散射数据最大可能的一致，得到了较准确的等离子体电子温度T_e和密度n_e。将计算所得的结果与现在汤姆逊散射系统所用的比值法得到的结果相比较，验证了该方法的可适用性，并能够克服比值法的一些缺陷。

关键词: 最大似然法, 数据处理, 汤姆逊散射

CLC Number:

YAO Ke, HUANG Yuan, FENG Zhen, LIU Chun-hua, NIE Lin, LI En-ping. Preliminary application of maximum likelihood method in HL-2A Thomson scattering system[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2010, 30(3): 203-207.

姚可, 黄渊, 冯震, 刘春华, 聂林, 李恩平. 最大似然法在HL-2A汤姆逊散射中的初步应用[J]. 核聚变与等离子体物理, 2010, 30(3): 203-207.

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Preliminary application of maximum likelihood method in HL-2A Thomson scattering system

最大似然法在HL-2A汤姆逊散射中的初步应用

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