Ion-exchange chromatographic separation of einsteinium from irradiated californium targets

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5845191

Elesin, A A; Nikolaev, V M; Shalimov, V V; Popov, Yu S; Kovantsev, V N; Tselishchev, I V; Filimonov, V T; Mishenev, V B; Yadovin, A A; Golosovskii, L S; Chetverikov, A P

Einsteinium was obtained by preparing two experimental californium targets and subjecting them to neutron irradiation in a high-flux reactor. The einsteinium was separated from the bombarded targets on a column packed with KU-2U sulfonated cation-exchange resin (20-50 ..mu..m) and eluted at room temperature with an ammonium ..cap alpha..-hydroxyisobutyrate solution. Three successive separation cycles removed californium to produce einsteinium in 68% yield with a decontamination factor of 5.3 x 10/sup 6/. About 20% of the einsteinium was used up by analysis and 11% remained in intermediate fractions. The method developed yielded pure einsteinium with little fission products present. The contribution of the fission products to the total einsteinium gamma-irradiation dose rate was no greater than 81%, due primarily to the radioisotope terbium-160.

• OSTI ID: 5845191
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:6; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
400703 -- Radiochemistry & Nuclear Chemistry-- Radioisotope Production
652020 -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARIUM 140
BARIUM ISOTOPES
BARYON REACTIONS
BERKELIUM 250
BERKELIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM 252 TARGET
CALIFORNIUM COMPOUNDS
CALIFORNIUM ISOTOPES
CALIFORNIUM OXIDES
CERIUM 144
CERIUM ISOTOPES
CHALCOGENIDES
CHROMATOGRAPHY
CURIUM 244
CURIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
EINSTEINIUM 253
EINSTEINIUM 254
EINSTEINIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELUTRIATION
EUROPIUM 156
EUROPIUM 158
EUROPIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
FISSION PRODUCTS
GAMMA SPECTRA
HADRON REACTIONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
IMPURITIES
INTERMEDIATE MASS NUCLEI
ION EXCHANGE CHROMATOGRAPHY
ISOMERIC TRANSITION ISOTOPES
ISOTOPE PRODUCTION
ISOTOPE SEPARATION
ISOTOPES
LANTHANUM 140
LANTHANUM ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NEUTRON REACTIONS
NIOBIUM 95
NIOBIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM 238
PLUTONIUM ISOTOPES
PRASEODYMIUM 144
PRASEODYMIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RHODIUM 106
RHODIUM ISOTOPES
RUTHENIUM 103
RUTHENIUM 106
RUTHENIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SEPARATION PROCESSES
SPECTRA
TARGETS
TERBIUM 160
TERBIUM ISOTOPES
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS
YEARS LIVING RADIOISOTOPES
ZIRCONIUM 95
ZIRCONIUM ISOTOPES