The spatial distribution of argon clusters in gas jet
The spatial distribution of argon clusters in gas jet
复制标题
气体射流中氩团簇的空间分布
DOI：
10.1140/epjd/e2009-00317-0
复制
发表时间：
2010-02-01
影响因子：
1.8
通讯作者：
Shi, M. G.
中科院分区：
文献类型：
--
作者：
Han, J. F.;Yang, C. W.;Shi, M. G.
用瑞利散射法测量了气体射流中氩团簇的空间分布。利用脉冲激光获得了一个事件中团簇的整体演化。在轴向固定位置上的测量结果表明，氩原子团簇在喷嘴开启后不到1 ms的时间内就开始长大，在整个20 ms的开启时间内团簇尺寸基本保持不变。进一步的测量结果表明，散射信号沿径向沿着近似高斯分布，半高宽（FWHM）随喷嘴距离的增加近似线性增加。散射信号沿轴向沿着呈朗道分布，喷嘴附近区域对激光团簇相互作用最有效。
The spatial distribution of argon clusters in gas jet is tested using the Rayleigh scattering method. A pulsed laser is used to acquire the whole evolution of the cluster inside one event. The measured results at a fixed axial position show that the argon clusters grow in less than one millisecond after the nozzle is opened and the cluster size keeps constant during the whole open period of 20 ms. Further results show that the scattering signal along the radial direction is almost Gaussian-distributed and the full width half maximum (FWHM) increases almost linearly when the distance from nozzle increases. The scattering signal along the axial direction is Landau-distributed and the area near the nozzle is most effective for laser cluster interaction.