NSUF - Nuclear Science User Facilities

Riley Parrish

Profile Information
Name
Mr. Riley Parrish
Institution
Sandia National Laboratory
Position
Postdoctoral appointee
h-Index
4
ORCID
0000-0002-3064-3862
Publications:
"Characterization of solid fission products in 13.7% FIMA MOX fuel using electron microscopy techniques" Riley Parrish, Karen Wright, Alexander Winston, Jason Harp, Casey McKinney, Assel Aitkaliyeva, Journal of Nuclear Materials Vol. 524 2019 67-79 Link
This work utilizes electron microscopy-based techniques to examine the radial behavior of solid fission products in plutonium (Pu) bearing mixed oxide (MOX) fuel irradiated to a burnup of 13.7% fissions per initial metal atom (FIMA). Metallic precipitates primarily consist of five fission products: ruthenium (Ru), rhodium (Rh), technetium (Tc), molybdenum (Mo), and palladium (Pd). The five metal precipitates (FMPs) examined in this work have low concentrations of Pd and Mo, with no major compositional differences along the fuel radius. A secondary Pd–Te metallic phase forms in cooler regions of the pellet, likely due to the diffusion of gaseous species away from the central void. X-ray chemical maps indicate that the Pd–Te phase can nucleate on the surface of FMPs before precipitating into separate particles. These particles were also found to alloy with iron (Fe) near the surface of the fuel pellet due to interdiffusion with the stainless-steel cladding. The insoluble perovskite oxide phase was found to form near the central void and at intermediate radial positions, but not at the fuel edge. These findings suggest that solid fission product phases form at varying counts and compositions along the fuel pellet radius, and thus should be considered when describing the thermal behavior of the fuel.
Presentations:
"Chemical and microstructural analysis of irradiated mixed oxide fuels" Assel Aitkaliyeva, Riley Parrish, Jason Harp, The Minerals, Metals and Materials Society (TMS) Annual Meeting & Exhibition March 11-15, (2018)
"Microstructural analysis of irradiated mixed oxide fuels" Riley Parrish, Assel Aitkaliyeva, Jason Harp, NuMat 2018 October 14-18, (2018)
"TEM Analysis of Irradiated Mixed-oxide Fuel" Assel Aitkaliyeva, Riley Parrish, Jason Harp, American Nuclear Society Student Conference 2018 April 5-7, (2018)
"Three-Dimensional Microstructural Characterization of the Peripheral Region in FBR MOX Fuel" Riley Parrish, Assel Aitkaliyeva, Casey McKinney, Materials in Nuclear Energy Systems (MiNES) October 6-10, (2019) Link
NSUF Articles:
U.S. DOE Nuclear Science User Facilities Awards 30 Rapid Turnaround Experiment Research Proposals - Awards total nearly $1.2 million The U.S. Department of Energy (DOE) Nuclear Science User Facilities (NSUF) has selected 30 new Rapid Turnaround Experiment (RTE) projects, totaling up to approximately $1.2 million. These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE Office of Nuclear Energy. Wednesday, April 26, 2017 - Calls and Awards
U.S. DOE Nuclear Science User Facilities Awards 35 Rapid Turnaround Experiment Research Proposals - Awards total approximately $1.3 million These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE Office of Nuclear Energy. Wednesday, September 20, 2017 - Calls and Awards
DOE Awards 33 Rapid Turnaround Experiment Research Proposals - Projects total approximately $1.5 million These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE Office of Nuclear Energy. Monday, May 14, 2018 - Calls and Awards
DOE Awards 33 Rapid Turnaround Experiment Research Proposals - Projects total approximately $1.2 million These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE Office of Nuclear Energy. Monday, June 18, 2018 - Calls and Awards
DOE awards 39 RTE Projects - Projects total approximately $1.3 million Thursday, February 1, 2018 - Calls and Awards
Additional Publications:
"A review of microstructural features in fast reactor mixed oxide fuels" Assel Aitkaliyeva, Riley Parrish, [2018] Journal of Nuclear Materials · DOI: 10.1016/j.jnucmat.2018.05.076 · EID: 2-s2.0-85048511107
"Amorphous boron nanorod as an anode material for lithium-ion batteries at room temperature" Miu Lun Lau, Heather M. Barkholtz, Haiping Xu, Riley Parrish, Meiyue (Olivia) Xu, Tao Xu, Yuzi Liu, Hao Wang, Justin G. Connell, Kassiopeia A. Smith, Hui Xiong, Changjian Deng, [2017] Nanoscale · DOI: 10.1039/c7nr03017g · EID: 2-s2.0-85027068305

We report an amorphous boron nanorod anode material for lithium-ion batteries prepared through smelting non-toxic boron oxide in liquid lithium.
"Disordered 3 D Multi-layer Graphene Anode Material from CO2for Sodium-Ion Batteries" Riley Parrish, Wei Wei, Yuzi Liu, Tao Li, Yun Hang Hu, Hui Xiong, Kassiopeia Smith, [2016] ChemSusChem · DOI: 10.1002/cssc.201600117 · EID: 2-s2.0-84978863317
Abstract

We report the application of disordered 3 D multi‐layer graphene, synthesized directly from CO2 gas through a reaction with Li at 550 °C, as an anode for Na‐ion batteries (SIBs) toward a sustainable and greener future. The material exhibited a reversible capacity of ∼190 mA h g−1 with a Coulombic efficiency of 98.5 % at a current density of 15 mA g−1. The discharge capacity at higher potentials (>0.2 V vs. Na/Na+) is ascribed to Na‐ion adsorption at defect sites, whereas the capacity at low potentials (<0.2 V) is ascribed to intercalation between graphene sheets through electrochemical characterization, Raman spectroscopy, and small‐angle X‐ray scattering experiments. The disordered multi‐layer graphene electrode demonstrated a great rate capability and cyclability. This novel approach to synthesize disordered 3 D multi‐layer graphene from CO2 gas makes it attractive not only as an anode material for SIBs but also to mitigate CO2 emission.
"In silico based rank-order determination and experiments on nonaqueous electrolytes for sodium ion battery applications" Richard W. Cutler, Sanket A. Deshmukh, Mehdi Shakourian-Fard, Riley Parrish, Joshua Huether, Darryl P. Butt, H. Xiong, Subramanian K. R. S. Sankaranarayanan, Ganesh Kamath, [2014] Journal of Physical Chemistry C · DOI: 10.1021/jp502319p · EID: 2-s2.0-84907568402
Source: ORCID/CrossRef using DOI

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The Nuclear Science User Facilities (NSUF) is the U.S. Department of Energy Office of Nuclear Energy's only designated nuclear energy user facility. Through peer-reviewed proposal processes, the NSUF provides researchers access to neutron, ion, and gamma irradiations, post-irradiation examination and beamline capabilities at Idaho National Laboratory and a diverse mix of university, national laboratory and industry partner institutions.

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