Xenon poisoning method for the determination of the average thermal neutron flux, macroscopic fission and total absorption cross sections

Durmayaz A., Sisman A., Sisman F., Yavuz H.

KERNTECHNIK, vol.62, no.5-6, pp.245-248, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62 Issue: 5-6
  • Publication Date: 1997
  • Journal Name: KERNTECHNIK
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.245-248
  • Istanbul Technical University Affiliated: Yes

Abstract

The paper presents the xenon poisoning method as an experimental way to determine the average thermal neutron Slur (<(phi)over bar>), the average macroscopic fission cross section (<(Sigma)over bar (f)>) and the average total macroscopic absorption cross section (<(Sigma)over bar (a)>) together with the reactivity change due to the Xe-135 poisoning. The predictions for the reactivity change doe to the Xe-135 poisoning are in good agreement with the results of the experiments. The results of <(phi)over bar>, <(Sigma)over bar (f)> and <(Sigma)over bar (a)> obtained by using the xenon poisoning method are also in satisfactorily agreement with the predictions of TRICAP and WIMS-D/4 computer codes. The temperature coefficients of the reactivity for the fuel and tank water have also been determined experimentally during this study.