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- Skarnemark, Gunnar, 1948
(author)
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Short-lived Isotopes of Lanthanum, Cerium and Praseodymium Studied by SISAK-technique
- 1974
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In: Journal of Inorganic Chemistry. ; 36, s. 1689-
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Journal article (peer-reviewed)abstract
- Short-lived, neutron-rich isotopes of the rare earth elements La, Ce and Pr have been studied by the means of a continuous solvent extraction separation method (SISAK). Half-lives, energies and relative intensities are reported for γ-rays attributed to 40 ± 3 sec 144La, 20 ± 5 sec 145La, 11 ± 1 sec 146La, 58 ± 3 sec 147Ce, 45 ± 5 sec 148Ce and 9·1 ± 0·4 sec 150Pr. Indirect evidence for the isolation of 5 sec 149Ce and 5–10 sec 150Ce is also presented along with upper half-life limits of 5 sec for 147La and 148La.
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- Skarnemark, Gunnar, 1948, et al.
(author)
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SISAK - A New Technique for Rapid Continuous (Radio)chemical Separations
- 1974
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In: Journal of Inorganic Nuclear Chemistry. ; :36, s. 2397-
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Journal article (peer-reviewed)abstract
- SISAK, a new continuous technique for on-line chemical separation of short-lived species, is presented. The system features multistage two-phase liquid-liquid and liquid-solid separations completed within 3–5 sec per stage. The system is easily adaptable for selective isolation of almost all elements. The operational characteristics of the system are outlined and the delay properties briefly discussed. A two-detector delay method for half-life determinations is also presented. The application of the technique to the study of short-lived nuclides is exemplified by results from investigations of 30 sec 68gCu, 3·8 min 68mCu and 42 sec 70Cu.
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