Speaker
Dr
Emilio Andrea Maugeri
(PSI, Switzerland)
Description
Lead-Bismuth Eutectic has been proposed as spallation neutron target and as a coolant for Accelerator-Driven System. One of the main issues of using LBE is related to the production of Polonium and its potential release.
Tellurium was chosen as surrogate in order to designing experimental set-ups for investigating gas-phase chemical properties of Polonium and its compounds.
Carrier-free amounts of elemental Tellurium, Tellurium oxides and hydroxides formed at 950 °C in various flowing carrier gasses were studied by thermochromatography in quartz glass columns.
Partitioning of the various compounds in quartz glass column was deduced measuring the -emission from the long-lived 123mTe at 212 KeV.
Enthalpies of adsorption of Te, TeO, TeO2 and TeO3 on quartz surface were deduced from the observed deposition temperatures using a Monte Carlo method. The potential chemical reactions occurring at different temperature are discussed.
Author
Dr
Emilio Andrea Maugeri
(PSI, Switzerland)
Co-authors
Mr
Dave Piguet
(Paul Scherrer Institute, PSI,)
Dr
Jörg Neuhausen
(Paul Scherrer Institut)
Maria Dorothea Schumann
(Paul Scherrer Institut (CH))
Robert Eichler
(Paul Scherrer Institute)
