基于激光等离子体实验数据重建三维温度场的方法研究  

An Method Study on Reconstruction of 3-D Temperature Fields Based on Experimental Data of Laser Plasma

作　　者：张杨[1] 金星[2] 王广宇[3] 叶继飞[3] 

机构地区：[1]装备指挥技术学院研究生管理大队,北京101416 [2]装备指挥技术学院航天装备系,北京101416 [3]装备指挥技术学院基础部,北京101416

出　　处：《装备指挥技术学院学报》2010年第1期105-109,共5页Journal of the Academy of Equipment Command & Technology

基　　金：国家自然科学基金资助项目(1014071)

摘　　要：利用加载窄带滤光片的高速相机拍摄激光等离子体灰度照片，基于Radon逆变换将等离子体面辐射强度图像重建为体辐射强度图像。在局部热力学平衡近似下，利用相对谱线强度法对激光等离子体温度进行了计算，得到激光等离子体三维温度场，采用文献报道光谱法实测等离子体局部温度，与等离子体三维温度场可视化结果进行比较，并对温度空间分布特性进行了解释，结果表明：激光等离子体温度场三维重建是合理的。The gray-scale images of laser plasma are shot by the high-speed camera with narrowband filters, and the 3-D temperature fields are reconstructed using Radon inverse transformation. The plasma temperature is calculated by the model of local thermodynamic equilibrium（LTE）. The basic features of 3-D temperature fields for laser plasma are also given, the relations between these features and the characteristics of the laser plasma are briefly discussed. The experimental results by spectrometer and the reconstructing ones are compared. The method of reconstructing the 3-D laser plasma temperature fields is confirmed reasonably.

关 键 词：激光等离子体 三维温度场 温度测量 

分 类 号：TN246[电子电信—物理电子学]