NUKLEONIKA 2007, 52(Supplement 1):S13-S16

SIMULTANEOUS TRANSMISSION AND SCATTERING MÖSSBAUER MEASUREMENTS OF POWDER SAMPLES

Piotr Fornal1, Jan Stanek2

1 Institute of Physics, Cracow University of Technology, 1 Podchorążych Str., 30-084 Kraków, Poland
2 The Marian Smoluchowski Institute of Physics, Jagiellonian University, 4 Reymonta Str., 30-059 Kraków, Poland


A vertical experimental set-up for simultaneous recording transmission and scattering Mössbauer spectra is described. Application of the apparatus for the study of model powder mixture of two components with different grain sizes shows differences in the relative intensity ratio of these fractions in absorption and conversion electron Mössbauer spectroscopy (CEMS) spectra. This effect, explained as a result of the size selectivity of CEMS technique, is parameterized by the grain radius ratio of components. The possible application for investigation of isolated surface nano- and microobjects is discussed.