Progress in activation analysis at the atomic institute Vienna

Fields in which progress has been achieved at the Atomic Institute Vienna a re discussed briefly. The use of short and medium lived nuclides for activa tion analysis (AA). Construction of out-core parts of a fast transfer syste m. Combined sample catcher sample-changer for AA allowing cyclic and pseudo cyclic AA. A system for discontinuous or continuous irradiation of liquid s amples. Counting with an anticompton shield and quantitative correction of random coincidences. Screening analyses with the fast irradiation and measu rement system. Improved peak-evaluation of gamma-spectra, Epithermal AA by a neutron converter. Following short-lived nuclide measurement, automatic s ample transfer into a well-type detector enabling sensitive counting of nuc lides with short half-lives. Use of large samples to increase the detection limits of ng to pg at activation with moderate neutron flux. Flux determin ation by liquid scintillation counting.