由60MeV^(18)O^(8+)离子轰击UO_2(NO_3)_2制备稀土多重示踪剂

Preparation of a rare earth multitracer solution from UO_2(NO_3)_2 irradiated by 60 MeV/nucleon ^(18)O^(8+) ions

用 6 0 Me V的 18O8+ 离子照射 UO2 (NO3 ) 2 ,靶子物质溶于王水 .经 (φ =2 0 % TBP- C6H6萃取 ,浓盐酸沉淀 ,0 .4 mol/ L的 HDEHP- n - heptane萃取 ,8mol/ L的 HCl反萃 ,得到了含有 12种稀土元素的

UO 2(NO 3) 2 as a target was irradiated with a 60 MeV/nucleon 18O 8+ ion beam,and dissolved in aqua regia.The uranyl was removed from 6 mol/L HNO 3 by means of solvent extraction with TBP in benzene,and the barium was separated by BaCl 2 precipitation.A 0.4 mol/L solution of HDEHP in n-heptane was used for extraction of rare earth elements from 0.5 mol/L HCl,and back extraction was carried out with an equal volume of 8 mol/L HCl after the organic phase was diluted by adding the same volume of n-heptane.A carrier-free multitracer solution containing 18 radionuclides of 12 rare earth elements was prepared.