Resonance region measurements of dysprosium and rhenium
Open Access
- 13 September 2017
- journal article
- research article
- Published by EDP Sciences in EPJ Web of Conferences
- Vol. 146, 11003
- https://doi.org/10.1051/epjconf/201714611003
Abstract
Neutron capture and transmission measurements have been performed, and resonance parameter analysis has been completed for dysprosium, Dy, and rhenium, Re. The 60 MeV electron accelerator at RPI Gaerttner LINAC Center produced neutrons in the thermal and epithermal energy regions for these measurements. Transmission measurements were made using 6Li glass scintillation detectors. The neutron capture measurements were made with a 16-segment NaI multiplicity detector. The detectors for all experiments were located at ≈25 m except for thermal transmission, which was done at ≈15 m. The dysprosium samples included one highly enriched 164Dy metal, 6 liquid solutions of enriched 164Dy, two natural Dy metals. The Re samples were natural metals. Their capture yield normalizations were corrected for their high gamma attenuation. The multi-level R-matrix Bayesian computer code SAMMY was used to extract the resonance parameters from the data. 164Dy resonance data were analyzed up to 550 eV, other Dy isotopes up to 17 eV, and Re resonance data up to 1 keV. Uncertainties due to resolution function, flight path, burst width, sample thickness, normalization, background, and zero time were estimated and propagated using SAMMY. An additional check of sample-to-sample consistency is presented as an estimate of uncertainty. The thermal total cross sections and neutron capture resonance integrals of 164Dy and Re were determined from the resonance parameters. The NJOY and INTER codes were used to process and integrate the cross sections. Plots of the data, fits, and calculations using ENDF/B-VII.1 resonance parameters are presented.Keywords
This publication has 4 references indexed in Scilit:
- Europium resonance parameters from neutron capture and transmission measurements in the energy range 0.01–200eVAnnals of Nuclear Energy, 2014
- Experimental determination of k 0 , Q 0 , $$ \bar{E}_{r} $$ factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation AnalysisJournal of Radioanalytical and Nuclear Chemistry, 2012
- ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay DataNuclear Data Sheets, 2011
- The RPI multiplicity detector response to γ-ray cascades following neutron capture in andNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003