Theoretical Research On Photochemical Technique Of Laser Isotope Separation

Isotope products are widely used as science and technology advances fast nowadays. These products are produced by isotope separation techniques. In order to supply different kinds of isotope products, several isotope separation techniques are developed during the past century. Traditional isotope separation techniques include gas-diffusion, gas-centrifuge, etc., while laser isotope separation(LIS) method offers us a separation technique with higher selectivity and lower energy consumption. This thesis starts with some brief introduction to the application of different isotope products, and some compare of isotope separation techniques.Russian scientist P.A.Bokhan has developed a new photochemical isotope separation technique to solve the difficulties during the separation of certain elements using the traditional LIS techniques. They have brought out some experiments, and achieved good results. They have also completed some theoretical research with a mathematical model established on basis of rate equations. This thesis gives a description about the theory of this new separation technique and mathematical model developed by Bokhan. It is pointed out that some calculation methods in this model are not reasonable especially when duration of an exciting light pulse is short. Hence we obtain our new model by giving some modification to the previous one. This approach is then applied to research the process of this new separation technique and the impact of the separation parameters on the separation process and results.