| NUKLEONIKA 1998, 43(4):499-504
ETHER EXTRACTION OF CARRIER-FREE 139Ce AS A METHOD
OF SEPARATION OF CERIUM FROM LANTHANUM TARGET
E. Ochab, R. Misiak
Institute of Nuclear Physics, 152 Radzikowskiego Str., 31-342 Krakow, Poland
The radionuclide 139Ce is widely used as a component of calibration multisources. In our laboratory preparation of high purity carrier-free 139Ce was worked out. The thick target yield of 139Ce produced bombardment of 139La with 13 MeV deuterons was found to be 159 kBq/mAh. The product 139Ce was separated from macroquantities of lanthanum by extraction with diethyl ether (DEE) in the system DEE-HNO3. The optimum conditions of 139Ce isolation were determined.
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