Total thermal neutron cross section measurements of yttrium hydride from 0.0005-3 eV

Article Instruments & Instrumentation

NJOY plus NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support

Kemal Ramic et al.

Summary: This work presents NJOY+NCrystal, a tool for generating thermal neutron scattering libraries for crystalline solid materials with both coherent and incoherent elastic components. The tool simplifies the generation process and includes examples of different materials and the creation of novel libraries.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2022)

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Article Nuclear Science & Technology

Enhancement of sub-thermal neutron flux through cold polyethylene

D. Fritz et al.

Summary: Researchers at Rensselaer Polytechnic Institute (RPI) designed and constructed a polyethylene based cold moderation system to enhance neutron flux below 10 meV when coupled with the Enhanced Thermal Target (ETT) at the RPI Gaerttner LINAC. The final design yielded an increase in sub-thermal neutron flux (below 10 meV) by a factor of 4.5 for a moderator temperature of 37.5 K relative to the ETT alone. Further improvements are expected after minor modifications and adjustment in polyethylene temperature. This novel capability will be used to conduct total thermal neutron cross section measurements for different materials.

JOURNAL OF NEUTRON RESEARCH (2021)

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Article Nuclear Science & Technology

Thermal neutron scattering measurements and modeling of yttrium-hydrides for high temperature moderator applications

Chris W. Chapman et al.

Summary: The study found that changes in temperature affect the inelastic spectra, indicating the presence of anharmonic effects, while hydrogen concentration has minimal impact on the inelastic spectra. Experimental data was in good agreement with predictions by the new method sTDEP at higher temperatures.

ANNALS OF NUCLEAR ENERGY (2021)

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Article Chemistry, Physical

Thermomechanical properties and microstructures of yttrium hydride

Xunxiang Hu et al.

Summary: This paper reports the properties of unirradiated bulk yttrium hydride as a function of hydrogen concentration, providing a baseline measurement for further neutron irradiation response studies. It suggests the recommended empirical treatment of the data and discusses other properties that need to be investigated.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Materials Science, Multidisciplinary