SISAK—A new technique for rapid, continuous (radio)chemical separations

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.