Neutron imaging of Zr–1%Nb fuel cladding material containing hydrogen

Autor: Gy. Mészáros, Erzsébet Sváb, M. Balaskó, Zoltán Somogyvári, F. Körösi
Rok vydání: 2004
Předmět:
Zdroj: Applied Radiation and Isotopes. 61:471-477
ISSN: 0969-8043
DOI: 10.1016/j.apradiso.2004.03.072
Popis: Hydrogen distribution and hydride phases were analyzed in reactor fuel cladding pressure tube Zr–1%Nb material up to 13,300 ppm. From neutron diffraction measurements, formation of cubic δ -ZrH 2 and a small amount of tetragonal γ -ZrH was established. Texture effects were analyzed by imaging plate technique. From neutron radiography images a linear model was set up that adequately described the relationship between gray levels and nominal H-concentrations. The H-distribution was unveiled by 3D intensity histograms and fractal analysis of multilevel-segmented neutron radiography images.
Databáze: OpenAIRE