摘要
建立了一套高分辨的离子速度影像装置。在这套装置中,离子透镜的设计是利用Simion7.0 应用程序对电场中离子的空间分布进行模拟“聚焦”得到的,达到了将离子源空间分布中速度相同而位置不同的离子聚焦在同一点上的效果。利用这套装置研究了CCl3Br在267nm附近的光解反应产物Br(2P3/2)和Br*(2P1/2)的速度和角度的分布,得到了β(Br)=-0.48, β(Br*)=1.44。
A high-resolution two-dimensional ion imaging apparatus is built. The ion lens optics is designed by using of Simion7.0 to simulate the ions act in the field, Arriving the focus effects that all particles with the same initial velocity vector are mapped onto the same point on the detector. Through Studying the photodissociation dynamics of the CCl3Br at laser wavelength 267nm, the three-dimensional velocity and angular distributions of the two photoframents Br(2P3/2) and Br*(2P1/2) are obtained, and the anisotropy parameter β(Br)=-0.48, β(Br*)=1.44 are determined respectively.
出处
《光学与光电技术》
2004年第2期1-5,共5页
Optics & Optoelectronic Technology
