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  • 1 State University Institute for Nuclear Sciences Proeftuinstraat 86 B-9000 Gent Belgium
  • 2 Central Research Institute for Physiçs P. O. Box 49 H-1525 Budapest 114 Hungary
  • 3 National Fund for Scientific Research Belgium
  • 4 Univ. V. Vlahovic Institute for Mathematics and Physics Cetinjski put bb Yu-81000 Titograd Yugoslavia
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Abstract  

The practical applicability of the 1/E1+α epithermal spectrum representation and of the effective resonance energy

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in NAA is investigated. Attention is paid to fundamental considerations such as definitions and approximations, error propagation functions, uncertainty statements, reliability of nuclear data and formal dimensioning problems. As to the latter, it is concluded that the applicability of the
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-concept is not dependent on the choice of a reference energy. The usefulness of the parameters
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in NAA is demonstrated by new experimental evidence obtained from and Q0 determinations in three different reactors: the WWR-M reactor (Budapest, Hungary), the THETIS reactor (Gent, Belgium) and the DR-3 reactor (Risø, Denmark).