METHOD OF PRODUCING ISOTOPES OF NEODYMIUM Russian patent published in 2017 - IPC B01D59/00 B01D59/20 

FIELD: physics.

SUBSTANCE: method is the use of centrifugation method, in which the separation effect is defined by the difference of molecular masses of the isotopes, thus as a working gas neodymium-containing gaseous compound is selected from the class of compounds of high volatility, obtained by treating beta-diketonates of neodymium by polyfluorinated esters of ethylene glycol, and polyfluorinated esters of diethylene glycol or a polyfluorinated formals, the technological parameters of the working gas are defined: the dependence of the saturated vapour pressure substance selected from the corresponding temperature and the temperature of decomposition, the operating temperature of the separation plant is selected, which provides the saturated vapour pressure, of the selected substance not less than 4 mm Hg.St. but not above 0.8 from the decomposition temperature and heating and maintaining the selected temperature of operation of the separation plant are carried out, including communication, control and regulating devices and gas centrifuges. Isotope ¹⁵⁰Nd is obtained with a concentration of more than 99.3%, isotope ¹⁴²Nd with a concentration of more than 99.9%, isotope ¹⁴⁶Nd with a concentration of more than 88.4%.

EFFECT: production of highly enriched isotopes of neodymium.

4 cl, 2 dwg, 2 tbl