b'TABLE OF CONTENTSAcronyms & Abbreviations8LDRD Overview10Nuclear Reactor Sustainment and Expanded Deployment 13Real-time Transient HeatingMoving Beyond DisplacementsIsotopic Distribution Analysis in Measurements for AdvancedPer Atom: A New ApproachIrradiatedMaterials 44Experiment Design and Modelfor Rapidly QuantifyingHeat SourceValidation 14 RadiationDamage 30 Identification UsingIn-pile Investigation of TransientArchiving Experimental BreederInverse Optimization 45Boiling in the Transient ReactorReactor-II Metallic Fuel TestDevelopment of an Innovative Test Facility 15 Data Using the Nuclear EnergyTesting Framework to Assess Neutron Diffraction of IrradiatedAdvanced Modeling andCrack Initiation Assisted by Nuclear Fuel 18 Simulation Program to AccelerateCorrosion-Fatigue 46Fast Reactor Fuel Qualification 32Development of NewAutomated Dependency Graph Experimental CapabilityLight Element Analysis ofPartitioning in Multiphysics based on Focused IonNuclear Fuels by ElectronObject-Oriented Simulation Beam Micromachining andProbeMicroanalysis 34 EnvironmentFramework 47Investigation of ThermophysicalEvaluating Thermal Spectral Observation Properties of Nuclear Materials atProperties of Convolutional Neural Network 48Micro and Mesoscale 20 Advanced Materials 36Assessment of Neutron Irradiation Accelerated Nuclear Materials andProton Recoil Effect Tolerance of Semi-coherentFuel Qualification by Adopting aon Light Output in Fast NeutronNano-lamellarStructures 49First-to-Failure Approach 22 Scintillators 38Scalable Domain Decomposition Developing Multi-Scale, Rapid,Conception of an EnhancedAlgorithms for Large-scale and Comprehensive Post- Fast Neutron Test Capability in aMonte Carlo Neutron Transport Irradiation Examination using theThermal Spectrum Reactor 40 Simulations on Unstructured Focused Ion BeamMicroscope 24 Multi-scale Thermal PropertiesMesh 50Optical Fiber-based Prediction in the MultiphysicsReactor Core Isolation Cooling Fabry-Perot Interferometry forObject-Oriented SimulationSystem Model Development and Fission Gas Detection 25 Environment via a GeneralImplementation in the Reactor Seismic and Cost AssessmentBoltzmann Solver 41 Excursion and Leak Analysis of Deeply Embedded or BuriedUsing Coupled MultiphysicsProgram 51Advanced Rectors with SeismicTools to Investigate Design- Closed-form Solution for the Isolation Strategies 26 limiting Criteria for MoltenMovement of Hydrogen in Determining the Role SaltReactors 42 Nuclear Thermal Propulsion of Fission Gas Bubble Pressure inIon-Solid Interactions inReactor Fuels during Fuel Fragmentation During Focused Ion Beam/SecondaryTransientOperation 524 Off-normal Conditions: Ion Mass Spectrometry: Toward A Separate-effect Study 28 Nanoscale Trace Element and'