超短脉冲激光同位素分离

同位素的分离极为重要。传统的分离方法是气相分离法。文章详细介绍了有别于该方法的两种激光同位素分离方法。其基本原理是利用离心分离作用产生同位素的分离。具体说来就是，一个旋转等离子体柱在一定条件下达到流体力学平衡时，其中的同位素离子沿径向将形成高斯密度分布。质量数越高的离子，密度分布的高斯半径越大，从而在径向形成具有不同丰度的同位素分布。理论和实验表明，该方法能产生较高丰度的同位素，具有良好的实用化前景。

ISOTOPE SEPARATION WITH ULTRA-SHORT PULSE LASERS

Isotope separation is of great value and traditio nally it is achieved by dissipation,which is very complicated and inconvenient.I sotope separation with lasers is quite different from the traditional method,an d is expected to give richer isotope yields.The principle of isotope separation with lasers is based on centrifugal force.Generally,when the rotating plasma col umn is in hydrodynamic equilibrium,the density distribution of different isotope ions is Gaussian along the radial direction,with a larger Gaussian width for io ns with larger mass.Consequently,the enrichment along the radial direction radiu s is different for ions with different mass,thus isotopes with different mass ca n be separated.