Speakers
Dr
Adel Len
(MTA WIGNER FK)
Katalin Bajnok
(Wigner research Centre for Physics, Hungarian Academy of Sciences)
Description
Small Angle Neutron Scattering measurements on archaeological ceramic samples have been performed at the Yellow Submarine and FSANS instruments at Budapest Neutron Centre. The main objective of the present study was to deepen our knowledge about the limits and usefulness of the SANS method regarding ceramic samples, therefore a series of reference samples and also Late Roman / Early Medieval archaeological samples and from the late Roman fortification of Keszthely (Hungary) were also measured.
Tempered and non-tempered control samples with known firing temperatures were prepared, and measured by SANS. The intensity versus scattering vector curves obtained from the detector neutron counts showed power-law type scattering, what was attributed to the scattering from the crystallites, pores, voids, amorphous inclusions. The influence of the sample thickness on the power-law exponent was also checked.
A correlation between the firing temperature and the SANS curves was set up, showing that this method – as complementary measurements among e.g. X-ray and Neutron Diffraction, Scanning Electron Microprobe, X-ray Fluorescence etc. – is suitable for analysing the high temperature nanostructural behaviour of ceramics.
Primary author
Katalin Bajnok
(Wigner research Centre for Physics, Hungarian Academy of Sciences)
Co-authors
Dr
Adel Len
(MTA WIGNER FK)
Prof.
János Füzi
(Wigner Research Centre for Physics, Hungarian Academy of Sciences)
Dr
László ROSTA
(Wigner Research Centre for Physics)
