超声喷流Ar团簇生长演化过程及团簇尺寸轴向分布的实验研究  

Evolution and axial distribution of Ar clusters in supersonic jets

作　　者：刘猛[1] 陆建峰[1] 韩纪峰[1] 李佳[1] 罗小兵[1] 缪竞威[1] 师勉恭[1] 杨朝文[1] 

机构地区：[1]四川大学物理科学与技术学院,辐射物理及技术教育部重点实验室,成都610064

出　　处：《物理学报》2009年第10期6951-6955,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10535030,10574095)资助的课题~~

摘　　要：针对特定形式的喷嘴产生的Ar气体团簇,利用瑞利散射法研究了团簇的生长演化过程,测量了不同背压下空间轴向上的团簇尺度,得到了团簇尺寸随轴向距离与背压的关系.实验发现,在20—60atm(1atm=101.3kPa)背压范围内,距离喷嘴出口5mm处,Ar团簇尺度最大.For Ar clusters produced by specifical jet,the Rayleigh scattering was employed to investigate the cluster formation process and to measure the cluster size along nozzle axis under different background gas pressures.The developing process of cluster and the axial distribution of cluster size were observed at pressures from 20 to 60 atm experimentally.The relationship between the cluster size and the pressure and axial distance from the jet nozzle was obtained.It was found that the largest clusters were formed at distance 5 mm from the nozzle.

关 键 词：超声喷流 Ar团簇 瑞利散射 团簇尺度 

分 类 号：O561[理学—原子与分子物理]