Researches on Laser Isotope Separation of Gadolinium and Boron

Abstract

Laser isotope separation experiments of Gd and B by atomic and molecular methods, respectively, have been performed. Gadolinium-157 was selectively photoionized by means of three linearly polarized dye lasers, the excitation process of which is based on the polarization selection rules. The effect of magnetic field on isotopic selectivity was discussed. ¹⁰BCl₃ was selectively photodissociated through IR multiphoton dissociation by the irradiation of TEA CO₂ laser or free electron laser (FEL). Selectivity was improved by two-color laser irradiation.

KEYWORDS:

• laser isotope separation
• gadolinium
• boron
• three-step photoionization
• polarization selection rule
• IR multiphoton dissociation