Eu同位素浓缩的实验研究  

Experimental Study on the Eu Isotopic Enrichment

作　　者：黄学人[1] 钟达[1] 梅刚华[1] 朱熙文[1] 

机构地区：[1]中科院武汉物理与数学研究所,波谱与原子分子物理国家重点实验室,湖北武汉430071

出　　处：《光谱学与光谱分析》2002年第5期738-740,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金 (1 96740 65)资助

摘　　要：极化原子束有许多重要的应用 ,如用来研究原子散射过程、制备极化核、检验宇称守恒性、研究表面特性以及应用于同位素的浓缩过程。本文主要描述通过磁偏转极化原子束的方法对Eu元素进行同位素浓缩实验[1] ,结合Eu原子特有的能级结构 ,分析了原子束的极化原理。描述了原子束极化和同位素浓缩的实验装置。用具有特定频率和偏振的激光对153 Eu进行选择性光抽运 ,分别得到正、负极化原子束 ,正、负极化后的原子束穿过六极偏转磁铁后分别被聚焦和发散 ,最后用热丝探测器探测 ,得到了清晰的Eu原子的浓缩信号。当各参数为最佳状态时 ,仅用一台激光器对153 Eu进行抽运极化 ,其浓缩效率可达 4%。The polarized atomic beam has found many applications, such as in studying atomic scattering processes, producing polarized nucleus, verifying the parity principle, measuring surface parmeters and enriching isotopes. In this paper, we mainly described the experiment of Eu isotope enrichment by means of magnetic. deflection. According to the special inner energy level structure of Eu atom, we analyzed the theory of the polarized atomic beam and described the main experimental set-up. Using one coherent laser with the wavelength of 601.9 nm and sigma polarization, Eu-153 atoms have been selectively optical pumped and polarized, so positive and negative polarized atomic beams could be produced. The, polarized atomic beams have been focused and defocused after passing through the deflection by hex-magnet. Finally, some clear enrichmental signal has been obtained in way of hot-wire detection. During the process of the experiment, we carefully selected the optimized conditions, the Eu-153 enrichment, effect of 4 % can be achieved using only on coherent laser.

关 键 词：Eu同位素 浓缩 实验研究 原子束极化 磁偏转 铕 稀土 

分 类 号：TL922[核科学技术—核燃料循环与材料] O614.338[理学—无机化学]