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Gregory Kennedy Cornelia Chilian Radojko Jaćimović Gašper Žerovnik Luka Snoj Andrej Trkov 《Journal of Radioanalytical and Nuclear Chemistry》2012,291(2):555-559
In order to predict the self-shielding effect in neutron activation of non-spherical samples in reactor neutron spectra, it
is important to know whether the neutron field is sufficiently anisotropic to cause significant variations between horizontal
and vertical sample orientation or with orientation relative to the direction towards the reactor core. Metal wires with significant
neutron self-shielding were irradiated in several channels of the SLOWPOKE reactor at Ecole Polytechnique Montreal and the
TRIGA reactor at the Jožef Stefan Institute. In all cases, the amount of thermal or epithermal self-shielding was found to
be identical, within the experimental uncertainty, regardless of the orientation of the wire, indicating that the neutron
field is essentially isotropic. Models used to predict neutron self-shielding need to be adjusted accordingly. In our Monte
Carlo model, the tube-shaped neutron source was moved back into the moderator and reflecting materials near the sample location
were included, which produced an isotropic neutron field at the sample location. 相似文献
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Šalamon Lino Geslot Benoit Heyse Jan Kopecky Stefan Leconte Pierre Noguere Gilles Paradela Carlos Schillebeeckx Peter Snoj Luka 《Journal of Radioanalytical and Nuclear Chemistry》2019,322(2):519-532
Journal of Radioanalytical and Nuclear Chemistry - Grafting of quaternary ammonium group is the main goal of this research for uranium recovery. The sorbent was investigated by FTIR, SEM–EDX,... 相似文献
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