University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 10 3 1999 09 01 A MODEL STUDY OF LASER ISOTOPE SEPARATION BY PHOTOIONIZATION OR PHOTODISSOCIATION PROCESS - 31437 EN Journal Article In this study, the selective photoexication of isotopic mixtures by laser light is investigated. Atomic and molecular methods are examined and rate equations are derived for both cases. Two and three step photoionization techniques are considered and rate equations are solved for ion yields. The molecular photodissociation process is also studied and the dependence of the dissociation product on the laser fluence is reported. The results of the developed model for SF molecule is compared with the other results and the agreement found in this comparison indicates the validity of the developed model https://jsciences.ut.ac.ir/article_31437_3632435cf99eec2a53ee7e4d8eeab451.pdf