CN101650308A - 一种测量激光等离子体光谱的方法 - Google Patents

一种测量激光等离子体光谱的方法 Download PDF

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CN101650308A
CN101650308A CN200810220038A CN200810220038A CN101650308A CN 101650308 A CN101650308 A CN 101650308A CN 200810220038 A CN200810220038 A CN 200810220038A CN 200810220038 A CN200810220038 A CN 200810220038A CN 101650308 A CN101650308 A CN 101650308A
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laser
monochromator
target
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plasma
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黄庆举
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MAOMING COLLEGE
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MAOMING COLLEGE
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Abstract

本发明是一种测量激光等离子体光谱的方法,其测量仪器包括激光器、透镜、烧蚀室、靶、透镜组、单色仪、Boxcar平均器、光信号触发器构成。其特征是测量激光与材料作用时产生的激光等离子体光谱,使光信号与电信号同步。发射光谱强度的时间分辨测定是通过某些特定波长的发射谱线,此时单色仪固定在某一波长上,沿着靶的法线方向移动单色仪,每一特定位置上的光强又用瞬态记录仪进行时间分辨测定。用F900eV数据采集板记录,它能够直接储存与多次平均所采集的信号,解决了测量等离子体的发光光谱问题。具有使用范围广、精缺度高的优点,具有广阔地应用前景。

Description

一种测量激光等离子体光谱的方法
技术领域
本发明涉及一种测量激光等离子体光谱的方法,主要用于对激光与材料作用产生的等离子体光谱进行测量、分析处理。
背景技术
自从脉冲激光器诞生以来,脉冲激光与固体的作用一直被许多学者所研究。激光烧蚀溅射技术在薄膜沉积、材料微区分析、表面刻蚀和改性等方面具有广泛的应用前景。强激光脉冲辐照固体材料将引起材料烧蚀,诱导产生等离子体,从靶面溅射出大量电子、原子、分子、原子分子簇以及它们的正负离子。从动力学来分析等离子体的形成、传播到消失,经历了一个电子、原子、离子、分子和粒团之间相互剧烈碰撞作用的过程。激光烧蚀诱导发光的机理非常复杂,烧蚀过程在激光脉冲内,激光对溅射碎片的再解离激发。等离子体的原子辐射来自激光烧蚀溅射出的物质团簇或颗粒在等离子体中被电子汽化并激发。原子和离子辐射强度随时间和空间的变化反映了激光烧蚀诱导等离子体的形成、增强以及随激光脉冲终止以后的膨胀、减弱到消失的过程。采用时间分辨光谱测试技术,发明一种测量激光等离子体光谱的方法,具有广阔地应用前景。
发明内容
本发明的目的是设计一种测量激光等离子体光谱的方法,其方法填补国内外空白。
测量激光等离子体光谱的实验装置包括激光器(1)、透镜(2)、烧蚀室(3)、靶(4)、透镜组(5)、单色仪(6)、Boxcar平均器(7)、光信号触发器(8)。激光器(1)发出的激光通过一个透镜(2),经过石英窗进入烧蚀室,垂直聚焦到烧蚀室(3)内一个可旋转的靶(4),激光辐照靶的表面时,形成一个绿色为主的等离子体羽状发光体。在垂直于靶面的法线方向上,通过一对透镜(5)将等离子体羽状发光体放大3倍后,成像在单色仪(6)的狭缝上。输入Boxcar平均器(7),通过光信号触发器(8)使光信号与电信号同步,输出由计算机数据采集板记录,发射光谱强度的时间分辨测定是通过某些特定波长的发射谱线,此时单色仪固定在某一波长上,沿着靶的法线方向移动单色仪,每一特定位置上的光强又用瞬态记录仪进行时间分辨测定。用F900eV数据采集板记录,它能够直接储存与多次平均所采集的信号,解决了测量等离子体的发光光谱问题。具有使用范围广、精缺度高的优点,具有广阔地应用前景。
附图说明
图1是实现发明的激光等离子体光谱仪的装置示意图。
上述图中,1激光器,2是透镜,3是烧蚀室,4是靶,5是透镜组,6是单色仪,7是Boxcar平均器,8是光信号触发器。

Claims (3)

1.一种测量激光等离子体光谱的方法,其测量仪器含有机械构件、光学元件和电子元件;主要包括激光器(1)、透镜(2)、烧蚀室(3)、靶(4)、透镜组(5)、单色仪(6)、Boxcar平均器(7)、光信号触发器(8);激光器(1)发出的激光通过一个透镜(2),经过石英窗进入烧蚀室,垂直聚焦到烧蚀室(3)内的一个可旋转的靶(4),激光辐照靶的表面时,形成一个绿色为主的等离子体羽状发光体;在垂直于靶面的法线方向上,通过一对透镜(5)将等离子体羽状发光体放大3倍后,成像在单色仪(6)的狭缝上;输入Boxcar平均器(7),通过光信号触发器(8)使光信号与电信号同步;发射光谱强度的时间分辨测定是通过某些特定波长的发射谱线,此时单色仪固定在某一波长上,沿着靶的法线方向移动单色仪,每一特定位置上的光强又用瞬态记录仪进行时间分辨测定;用F900eV数据采集板记录,它能够直接储存与多次平均所采集的信号。
2.根据权利要求1所述的一种测量激光等离子体光谱的方法,其特征是测量激光与材料作用时产生的激光等离子体光谱。
3.根据权利要求1所述的一种测量激光等离子体光谱的方法,使光信号与电信号同步。
CN200810220038A 2008-12-15 2008-12-15 一种测量激光等离子体光谱的方法 Pending CN101650308A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107003239A (zh) * 2014-12-10 2017-08-01 赛拓生物科技公司 自触发流式细胞计数仪

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107003239A (zh) * 2014-12-10 2017-08-01 赛拓生物科技公司 自触发流式细胞计数仪
CN107003239B (zh) * 2014-12-10 2022-03-29 赛拓生物科技公司 自触发流式细胞计数仪

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