15-20 June 2014
Laurentian University / Université Laurentienne
America/Toronto timezone
Welcome to the 2014 CAP Congress! / Bienvenue au congrès de l'ACP 2014!

Thermal Neutron Scattering Cross Section Measurements of Light and Heavy Water

20 Jun 2014, 09:45
15m
C-204 (Laurentian University / Université Laurentienne)

C-204

Laurentian University / Université Laurentienne

Sudbury, Ontario
Oral (Non-Student) / orale (non-étudiant) Nuclear Physics / Physique nucléaire (DNP-DPN) (F1-4) Nuclear Safety -DNP-DIAP / Sureté nucléaire - DPN-DPIA

Speaker

Dr Gang Li (Atomic Energy of Canada Limited)

Description

Thermal neutron scattering cross section measurements on water are of great interest in both nuclear engineering and physics of liquid matter. In fission reactor design, high accuracy nuclear cross section data for moderator and coolant materials are essential to perform neutronic transport calculations. While in the physics of liquids, the motions of the liquid molecule can be deduced from the scattering cross section. The future Generation IV reactor designs drive new demands of experimental data under extended conditions (i.e. water in thermal dynamically supercritical states), where the cross section data have not been measured, and the water motion are not well known. As the first step towards the cross section measurements of light and heavy water in the supercritical states, we have performed measurements under the ambient condition. The total cross-section, as well as single and double differential scattering cross sections, have been measured with a triple-axis spectrometer at NRU reactor. The experimental techniques and the data analysis method to obtain the absolute cross sections will be discussed and the resulting cross sections compared with the Evaluated Nuclear Data File.

Primary author

Dr Gang Li (Atomic Energy of Canada Limited)

Co-authors

Dr Bhaskar Sur (Atomic Energy of Canada Limited) Dr Ghaouti Bentoumi (Atomic Energy of Canada Limited) Dr Liqian Li (Atomic Energy of Canada Limited) Dr Zin Tun (Canadian Neutron Beam Center)

Presentation Materials