31. oktoobril 2013 kell 16.15 TÜ FI saalis, Riia 142, ruum 108
Prof. Sheldon Landsberger
Nuclear and Radiation Engineering Program,
The University of Texas at Austin, USA
Compton Suppression Gamma-Ray Spectrometry in Environmental Radioactivity and Neutron Activation Analysis
Low level gamma ray spectrometry has been in existence for many years to characterize environmental radioactivity and follow contamination of the biosphere from such events such as Chernobyl and Fukushima as well as the legacy of Cold-War atmospheric weapons testing. In the field of neutron activation analysis the use of Compton suppression gamma-ray spectroscopy has increased dramatically in the last decade. This seminar will focus on the basic physics concepts of Compton scattering and the electronics used in the suppression off the background in gamma ray spectrometry. Examples will be also given in the determination of naturally occurring radioactivity and neutron activation products in geological and environmental samples.