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  • 1 “V. Vlahovic” University Institute for Mathematics and Physics Cetinjski put bb Yu-81000 Titograd Yugoslavia
  • | 2 “E. Kardelj” University “J. Stefan” Institute Jamova 39 Yu-61000 Ljubljana Yugoslavia
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Neutron-flux behaviour during irradiation should be known when applying the ko-method of neutron activation analysis /NAA/. During two 100-hour operating periods of the TRIGA MARK II reactor, Ljubljana, the flux was measured by means of a197Au/n,/198Au monitor /E=411.8 keV/. Cadmium-covered irradiations were also performed to obtain the epithermal flux and thermal-to-epithermal flux ratio variations. Consistency was found between these results and the reactor operators' logbook record.