ORELA Flight Path 1: Determinations of Its Effective Length Vs Energy, Experimental Energies, and Energy Resolution Function and Their Uncertainties

摘要

Flight path 1 at ORELA is nominally 200 m in length and has been extensively used for neutron transmission and scattering measurements. Due to moderation effects in the neutron-producing target and to the finite thickness of the neutron detector, the effective flight-path length is a function of neutron energy. In this report, we determine the effective length as a function of energy, its uncertainty, and time-of-flight energies and their uncertainties. Finally, we determine the resolution function and its uncertainty and compare the width of this resolution function with an experimental determination of this quantity. 9 references, 5 figures, 4 tables. (ERA citation 09:034003)