权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of novel refining method for ultra-purified materials

超纯材料新型精制方法的开发

基本信息

批准号：
06452338
负责人：
SATO Shunichi
金额：
$ 4.61万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452338/
关键词：
LASER PURIFICATION 精製超高純度

项目摘要

In this research, we tried to develop a momentum control method based on the interaction between the laser light and the atomic beam to establish a base of novel ultra-purification method of a wide variety of materials. To achieve this purpose, we made experimental equipment. This contains a laser source and a ultravacuum system. As a result, the pressure of 10^<-11> Torr was obtained. However, this value is the limitation of our measurement equipment and we believe that the pressure may be lower than this.As a laser source, a compact and inexpensive semiconductor laser is suitable and desirable features for our experiments are as follows. 1. a spectral width as narrow as 100 kHz, 2. higher stability and 3. fast frequency scanning. As a first step, the output from the semiconductor laser is feedbacked by confocal Fabry-Perot interferometer to stabilize the laser frequency and to reduce its width. The laser frequency was widely scanned but not smooth due to the mode-hopping. By using a grating, smooth and wide range of scanning was achieved.Moreover, we studied on a novel isotope separation on the basis of a light induced drift effect. In this research, the light induced drift was clearly observed in a larger reaction cell than those ever reported. It is thought that a highly efficient isotope separation is possible by our method.

在本研究中，我们试图开发一种基于激光与原子束相互作用的动量控制方法，为多种材料的新型超净化方法奠定基础。为了达到这个目的，我们制作了实验设备。它包括一个激光光源和一个超真空系统。结果得到了10^&lt；-11；Torr的压力。然而，这个值是我们测量设备的限制，我们相信压力可能会低于这个值。作为激光光源，紧凑而廉价的半导体激光器是合适的，我们的实验所需的特征如下。1.光谱宽度窄至100 kHz；2.更高的稳定性；3.快速扫频。作为第一步，半导体激光器的输出由共焦法布里-珀罗涉仪反馈，以稳定激光频率并减小其宽度。激光频率被广泛扫描，但由于跳模，激光频率并不平滑。利用光栅法实现了大范围、光滑的扫描，并研究了一种基于光致漂移效应的同位素分离方法。在这项研究中，在一个比以往报道的更大的反应池中清楚地观察到了光诱导漂移。人们认为用我们的方法进行高效的同位素分离是可能的。