Neutron inelastic scattering cross sections measured directly through (n,n) or deduced from γ-ray production cross sections following inelastic neutron scattering (n,n′γ) are a focus of basic and applied research at the University of Kentucky Accelerator Laboratory (www.pa.uky.edu/accelerator). For nuclear data applications, angle-integrated cross sections are desired over a wide range of fast neutron energies. Several days of experimental beam time are required for a data set at each incident neutron energy, which limits the number of angular distributions that can be measured in a reasonable amount of time. Approximations can be employed to generate cross sections with a higher energy resolution, since at 125o, the a2P2 term of the Legendre expansion is identically zero and the a4P4 is assumed to be very small. Provided this assumption is true, a single measurement at 125o would produce the γ-ray production cross section. This project tests these assumptions and energy dependences using the codes CINDY/SCAT and TALYS/ECIS06/SCAT. It is found that care must be taken when interpreting γ-ray excitation functions as cross sections when the incident neutron energy is < 1000 keV above threshold or before the onset of feeding.
|Title of host publication||ND 2016|
|Subtitle of host publication||International Conference on Nuclear Data for Science and Technology|
|Editors||Peter Siegler, Wim Mondelaers, Arjan Plompen, Franz-Josef Hambsch, Peter Schillebeeckx, Stefan Kopecky, Jan Heyse, Stephan Oberstedt|
|State||Published - Sep 13 2017|
|Event||2016 International Conference on Nuclear Data for Science and Technology, ND 2016 - Bruges, Belgium|
Duration: Sep 11 2016 → Sep 16 2016
|Name||EPJ Web of Conferences|
|Conference||2016 International Conference on Nuclear Data for Science and Technology, ND 2016|
|Period||9/11/16 → 9/16/16|
Bibliographical noteFunding Information:
This work is supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0002931.
© The Authors, published by EDP Sciences, 2017.
ASJC Scopus subject areas
- Physics and Astronomy (all)