Belonging to Centro de Ciências e Tecnologias Nucleares (C2TN)

  Laboratories for Instrumental Neutron Activation Analysis

Thirty four elements commonly found in environmental and biological samples -  Al, Ca, Cu, Mn, Ti, V, As, Ba, Br, K, La, Na, U, Ag, Cd, Ce, Co, Cr, Cs, Eu, Fe, Hf, Hg, Rb, Sb, Sc, Se, Sm, Sr, Ta, Tb, Th, Yb and Zn are determined by Instrumental Neutron Activation Analysis using the k0 method (k0-INAA) that was established at the Portuguese Research Reactor (RPI).

Pneumatic Sample Transfer System The elements from Al to V that produce short-lived nuclides are analyzed by a short irradiation on SIPRA - a Fast Pneumatic Sample Transfer System - and then counted on a coupled Ge detector.
Sampler Changers The elements from As to Zn that produce medium and long lived nuclides are analyzed by a long time irradiation at Cell55 or Cell56 of the RPI and then measured on Ge detectors associated with automatic sample changers.
Compton Suppression System A Compton Suppression System (CSS) is available to improve the detection limits of specific elements.


  • 4 Germanium detectors
  • 3 DSPEC Jr 2.0
  • 2 Automatic Sample Changers
  • Compton Suppression System
  • Fast Pneumatic Transfer System

Researcher responsible for the laboratories: Marta Almeida (

Equipment partially funded by
Managing Authority and Funding
FCT – Fundação para a Ciência e a Tecnologia
National Plan for Scientific Re-equipment

Project reference: REEQ/1075/FIS/2005