Isolation of tungsten and tantalum isotopes without supports from. cap alpha. -particle-irradiated hafnium targets
An extraction procedure has been developed for successive isolation of tungsten (/sup 178/W and /sup 181/W) and tantalum (/sup 179/Ta and /sup 182/Ta) isotopes without supports from ..cap alpha..particle-irradiated hafnium targets. The target, irradiated on a cyclotron, is dissolved in hydrofluoric acid. Tantalum isotopes are extracted with tributyl phosphate (TBP) from 1-5 M HF and are then reextracted with a 1:1 ammonia solution, and hydrofluoric acid is removed by heating. Tungsten isotopes are extracted with a chloroform solution or N-benzoyl-N-phenylhydroxylamine (BPHA) from 11-12 M H/sub 2/SO/sub 4/ or ..cap alpha..-benzoin oxime from 4.5-5.5 M H/sub 2/SO/sub 4/ and are then reextracted with a l:l ammonia solution. The yield of tungsten isotopes is not less than 95%, and the content of radioactive impurities of other isotopes is not more than 0.1%.
- OSTI ID:
- 6127571
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Vol. 27:2; Other Information: Translated from Radiokhimiya, Vol. 27, No. 2, pp. 236-238, March-April, 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Activation evaluation and isotopic effects in the (n, p) reaction cross section on A-180 target nuclei
EXCITATION FUNCTIONS OF (d,$alpha$)-AND (d,$alpha$n)-REACTIONS ON NATURAL TUNGSTEN
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
HAFNIUM 178 TARGET
ALPHA REACTIONS
TANTALUM 179
SOLVENT EXTRACTION
TANTALUM 182
TUNGSTEN 178
TUNGSTEN 181
ALPHA PARTICLES
AMINES
AMMONIA
CHLOROFORM
DISSOLUTION
HEATING
HYDROFLUORIC ACID
IRRADIATION
ISOTOPE RATIO
ISOTOPE SEPARATION
NUCLEAR REACTION YIELD
RADIOISOTOPE GENERATORS
TBP
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BUTYL PHOSPHATES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ESTERS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HEAVY NUCLEI
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
RADIOISOTOPES
SEPARATION PROCESSES
TANTALUM ISOTOPES
TARGETS
TUNGSTEN ISOTOPES
YEARS LIVING RADIOISOTOPES
YIELDS
070100* - Physical Isotope Separation
400703 - Radiochemistry & Nuclear Chemistry- Radioisotope Production