Nuclear and Emerging Technologies for Space (NETS 2026)

Full Issue

A Historical Review of the GPHS F5 RTG

Boyd Allen Tolson (Univ. Dayton Research Institute), Kenton Sherick (Univ. Dayton Research Institute), Chadwick Barklay (Univ. Dayton Research Institute)

General-Purpose Heat Source Radioisotope Thermoelectric Generator Flight Unit 5 Refurbished (GPHS-RTG F5R) Electrically Heated Thermal Vacuum Testing

Joseph Giglio (INL), Brandon Horkley (INL), Jaymon Birch (INL), Shad Davis (INL)

General-Purpose Heat Source Radioisotope Thermoelectric Generator Flight Unit 5 Refurbished (GPHS-RTG F5R) Power Prediction

Joseph Giglio (INL)

The Next Generation Radioisotope Thermoelectric Generator Mod 1 Development Status

Jaymon C. Birch (INL), Shad E. Davis (INL), Joe Giglio (INL), T. Quinn Kirkham (INL)

Methodology of Multiphase Flow Tool Within a Liquid-Core Nuclear Thermal Rocket

Joshua Naudet (Ohio State), Spencer Christian (Ohio State), John M. Horack (Ohio State)

Qualitative Modeling of the Nuclear Thermal Engine Turbopump for Use in CEDAR

Grant Switzer (Ohio State), Jacob Stonehill (Ohio State)

Validation of a Reduced-Geometry CFD Model for the XE-Prime Nuclear Thermal Propulsion Engine

Jonathon Thomsen (Georgia Tech), Dan Kotlyar (Georgia Tech)

Parametric Evaluations of the Recuperated and Non-Recuperated Brayton Cycles for the HYPERION NEP/NTP Propulsion System

Logan R. Horner (Center for Space Nuclear Research), John Stanek (Center for Space Nuclear Research), Abigail Hogue (Center for Space Nuclear Research), Robert C. O'Brien (Center for Space Nuclear Research)

Oscillating Heat Pipes for Space Nuclear Power

Alex Miller (ThermAvant Technologies)

Recent Advances in Multiphysics Analysis of Failsafe Heat Pipe Cooled Nuclear Reactor

Aanchal Gupta (Univ. Illinois, Urbana-Champaign), Magdi Ragheb (Univ. Illinois, Urbana-Champaign), Rizwan-uddin (Univ. Illinois, Urbana-Champaign)

Structural and Thermal Assessment of Ti-H2O – GFRC Heat Pipe Radiators for Fission Surface Power

Sandeep Hatte (Advanced Cooling Technologies Inc.), Zayed Ahmed (Advanced Cooling Technologies Inc.), Calin Tarau (Advanced Cooling Technologies, Inc.), Jeffrey Diebold (Advanced Cooling Technologies, Inc.), Srujan Rokkam (Advanced Cooling Technologies, Inc.)

LEU-Fueled Natural-Circulation Microreactor for Heat Supply on the Moon

Naoyuki Takaki (Tokyo City Univ.)

Preconceptual Study of a Hypothesized Deep Space Surface Mission Power Source

Blake Coghill (Virginia Commonwealth Univ.), Jackson Place (Virginia Commonwealth Univ.), Joshua Piper (Virginia Commonwealth Univ.), Ethan Villarreal (Virginia Commonwealth Univ.), Cassie Bowman (Arizona State), Lane Carasik (Virginia Commonwealth Univ.)

Triply Periodic Minimal Surface Recuperator Design for a 100-kWe Nuclear Closed Brayton Cycle for Space Power

Aubrey Olson (Univ. Wisconsin, Madison), Noah Kleitsch (Univ. Wisconsin Madison), David Hall (Univ. Wisconsin Madison), Rafe Smith (Univ. Wisconsin Madison), Logan Rapp (Sandia), Rodney Keith (Sandia)

FENRIR: A Reactor Multiphysics Modeling Suite for Nuclear Electric Propulsion Systems

Corey Smith (AMA), Jacob Stonehill (AMA), Christopher Harnack (AMA), Matthew Duchek (AMA)

NEP Trade Design Studies: Comparison Between MSR and HPR Concepts

Pablo R. Rubiolo (University Grenoble Alpes, CNRS, Grenoble INP, LPSC), Francisco Szmandiuk (University Grenoble Alpes, CNRS, Grenoble INP, LPSC), Nicolas Capellan (University Grenoble Alpes, CNRS, Grenoble INP, LPSC), Gonzalo De La Iglesia (University Grenoble Alpes, CNRS, Grenoble INP, LPSC), Julien Giraud (University Grenoble Alpes, CNRS, Grenoble INP, LPSC), Ignacio Lobardo (University Grenoble Alpes, CNRS, Grenoble INP, LPSC)

Future-Proofing Investments in US Development and Deployment of Advanced Nuclear Propulsion Technologies

Tony S. Hill (Starr Nuclear), James Werner (AMA), Lindsey Holmes (AMA)

NASA GRC's Closed Brayton Power Conversion Capabilities

Luis A. Rodriguez (NASA Glenn Research Center), Thomas M. Lavelle (NASA Glenn Research Center), Matthew D. Stang (NASA Glenn Research Center), Terry V. Reid (NASA Glenn Research Center), Joel T. Krakower (NASA Glenn Research Center), Daniel D. Goodell (NASA Glenn Research Center), Salvatore M. Oriti (NASA Glenn Research Center)

A High-Fidelity Modeling Approach for Coupling Thermal, Fluid, and Neutronic Analysis in a Nuclear Thermal Propulsion Engine

Camden Eck (AMA), Jacob Stonehill (AMA), Corey Smith (AMA)

Future-Ready Nuclear Engineering Education: Integrating AI, Digital Systems, and Advanced Technologies to Close Critical Skills Gaps

Vaibhav Sinha (Thomas Edison State University)

Feasibility Study on a Nuclear Reactor for Lunar Surface Application Using Natural Uranium Fuel

Fumiya Sato (Tokyo City Univ.), Jun Nishiyama (Tokyo City Univ.)

Multiphysics Power Balance Modeling of a Fission Surface Power-Type Dual Brayton Gas Cooled Reactor System

Anthony Y. Ghossein (Lockheed Martin Space), John P. Mulloy II (Lockheed Martin Space), Cole M. Mueller (Lockheed Martin Space), Joshua S. Bowman (Lockheed Martin Space), Alexis Maldonado (Lockheed Martin Space), Jesse D. Chuhta (Lockheed Martin Space), Kevin S. Bennion (Lockheed Martin Space), Chesney R. Boal (Lockheed Martin Space), Sean M. Smith (Lockheed Martin Missiles and Fire Control), Mikaela E. Blood (Lockheed Martin Space), Ian G. Collins (Lockheed Martin Space), Jeffrey J. Breedlove (Creare LLC)

Burnable-Absorber-Loaded Micro Molten Salt & Metal Reactor (MSMR) for Lunar Base Power

Jaehyun Ryu (KAIST), Yonghee Kim (KAIST)

Cycle Performance Analysis and Preliminary Design of a PCHE Recuperator for a 100-kWth Space He-Xe Brayton Cycle

Seunghwan Oh (KAERI), Sung Nam Lee (KAERI), Nam-il Tak (KAERI), Chan Soo Kim (KAERI)

Americium Radioisotope Power Systems: European Program and International Collaboration

Richard M. Ambrosi (Perpetual Atomics Ltd), Alessandra Barco (Univ. Leicester), Ramy Mesalam (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Joanna Lucas (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Chris Bicknell (Univ. Leicester), Tony Crawford (Univ. Leicester), Rob Tute (Univ. Leicester), Kris Bell (Univ. Leicester), Gareth Bustin (Univ. Leicester), James Pearson (Univ. Leicester), Charlotte Bouldin (Univ. Leicester), Roisin Speight (Univ. Leicester), Duncan Ross (Univ. Leicester), Piers Slater (Perpetual Atomics Ltd), Pierre Coquay (ESA), Christophe Fongarland (ESA), Ana Brandao (ESA), Joe Lapinskas (QSA Global), Mark Shilton (QSA Global), Nathan Gardella (QSA Global), Matt Potenza (QSA Global), Tim Tinsley (UK NNL), Matt Cook (UK Space Agency), Meganne Christian (UK Space Agency)

NASA’s Radioisotope Power Systems Program: Status and Future Outlook

Carl E. Sandifer II (NASA Glenn Research Center), David Frate (NASA Glenn Research Center), Lauren Clayman (NASA Glenn Research Center), Emily Hsu (Department of Energy), Allen Guzik (NASA Glenn Research Center), Kristin Jansen (NASA Glenn Research Center), Leah Sopko (NASA Glenn Research Center), Colleen Van Lear (NASA Glenn Research Center), Christofer Whiting (NASA Glenn Research Center), Ryan Edwards (NASA Glenn Research Center), Margaret Simon (Aerospace Corporation)

Necessity of Continuing SiGe Thermoelectric Technology R&D and Robust Verification for Critical NASA Space Missions

Rama Venkatasubramanian (Johns Hopkins APL), Jean-Pierre Fleurial (NASA Jet Propulsion Laboratory), Jonathan Pierce (Johns Hopkins APL), Timothy Erickson (Johns Hopkins APL), Artur B. Chmielewski (NASA Jet Propulsion Laboratory), Paul Ostdiek (Johns Hopkins APL)

Sintering Behavior of Transition Metal Tetra-Carbides for Nuclear Thermal Propulsion

Timothy Stack (Univ. Tennessee, Knoxville), Keaton McNulty (Univ. Tennessee, Knoxville), Ethan Payne (Univ. Tennessee, Knoxville), Steven Zinkle (Univ. Tennessee, Knoxville)

Thermal Hydraulics Simulations of the XE-Prime Nuclear Thermal Propulsion (NTP) Engine Using Flownex

Miles Adkins (PADT Inc), Thomas Chadwick (PADT Inc)

TiC Precipitate Effects on the Thermal Conductivity and Fracture Toughness of Ti-Containing Tri-Carbides

Keaton McNulty (Univ. Tennessee, Knoxville), Timothy Stack (Univ. Tennessee, Knoxville), Ethan Payne (Univ. Tennessee, Knoxville), Steven Zinkle (Univ. Tennessee, Knoxville)

Analysis of Thermophysical Properties of Fuels for Nuclear Thermal Propulsion

Hanshu Kotta (Ohio State), Saqeeb Adnan (Ohio State), Marat Khafizov (Ohio State)

Kinetic and Reactor Modeling of Hydrogen-Graphite Interactions Under Nuclear Thermal Propulsion Conditions

Thomas Westenhofer (Univ. California, Irvine), Xian Shi (Univ. California, Irvine)

Ion Beam Irradiation Tolerance of Ultra-High Temperature Ceramic Carbides for Nuclear Thermal Propulsion

Ethan Payne (Univ. Tennessee, Knoxville), Steven Zinkle (Univ. Tennessee, Knoxville)

Multiphysics Modeling of Hydrogen Transport in Space Nuclear Systems with FESTIM

Chirag Khurana (MIT Plasma Science and Fusion Center), Rémi Delaporte-Mathurin (MIT Plasma Science and Fusion Center), James Dark (MIT Plasma Science and Fusion Center), Huihua Yang (MIT Plasma Science and Fusion Center), Kaelyn Dunnell (MIT Plasma Science and Fusion Center)

Graphene-Copper Hybrid Thermal Straps

Dan Wang (Faraday Technology Inc.), Timothy Hall (Faraday Technology Inc.), Stephen Snyder (Faraday Technologies Inc.), Maria Inman (Faraday Technology Inc.), Jessica Godwin (Utah State), Nick Roberts (Utah State), Houng Le (Faraday Technology Inc.)

Preliminary Investigation into Fissile Plasma Simulation for Gas Core Nuclear Power

Eleni Mowery (Univ. Michigan), John Foster (Univ. Michigan)

Space Nuclear Reactor Radiation Monitor Development

Suzanne Nowicki (LANL), Steve Wender (LANL), Michelle Wiley (LANL), Kristina McKeown (LANL), Andrew Prince (LANL), Schuyler Tyler (LANL)

Ground Testing of Prototype Thermal-to Electric Conversion Devices Heated by Infrared Laser

Boyd A. Tolson (Univ. Dayton), Steven F. Adams (Air Force Research Laboratory)

Modeling Cosmic Proton Activation Using MCNP and AARE

Keenan Hoffman (LANL), Joshua Hooker (LANL)

Gamma-Ray Burst Observations from the Cadmium Zinc TElluride Radiation Imager (TERI)

Michael Streicher (H3D, Inc.), Daniel Shy (Naval Research Laboratory), Jim Mason (H3D, Inc.), Feng Zhang (H3D, Inc.), Willy Kaye (H3D, Inc.), David Goodman (H3D, Inc.), Zhong He (H3D, Inc.), Alena Thomson (Naval Research Laboratory), Bernard Phlips (Nuclear Research Laboratory)

Modelling and Optimization of a Planar Parabolic Magnetic Nozzle for Z-Pinch Fusion Propulsion

Stephanie Manasterski (Univ. Alabama, Hunstville), Kaitlyn Judd (Univ. Alabama, Hunstville), Jason Cassibry (Univ. Alabama, Hunstville), Gabe Xu (Univ. Alabama, Huntsville)

Pyrolytic Graphite Insulation used for Light-Weight Radioisotope Heater Units

Kenneth R. Veach (ORNL), Joe O'Bryan (ORNL)

Americium-Fuelled Radioisotope Stirling Generator Elegant Breadboard

Kris Bell (Univ. Leicester), Ernestina Wozniak (NASA Glenn Research Center), Rob Tute (Univ. Leicester), Ramy Mesalam (Univ. Leicester), Salvatore Oriti (NASA Glenn Research Center), Matthew Stang (NASA Glenn Research Center), Tony Crawford (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Alessandra Barco (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Richard Ambrosi (Univ. Leicester), Jo Lucas (Univ. Leicester)

Americium-Fuelled Radioisotope Thermoelectric Generator Developments

Robert Tute (Univ. Leicester), Ramy Mesalam (Univ. Leicester), Kris Bell (Univ. Leicester), Tony Crawford (Univ. Leicester), Chris Bicknell (Univ. Leicester), Alessandra Barco (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Richard Ambrosi (Univ. Leicester)

Americium-Fuelled Radioisotope Heater Unit Develpoments

Ramy Mesalam (Univ. Leicester), Robert Tute (Univ. Leicester), Kris Bell (Univ. Leicester), Alessandra Barco (Univ. Leicester), Tony Crawford (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Richard Ambrosi (Univ. Leicester), Jo Lucas (Univ. Leicester)

Irradiation Testing Dynamic Power System Convertor Organics

Tyler R. Steiner (NASA Glenn Research Center), Luke R. Hansen (Univ. Tennessee, Knoxville), Greeta J. Thaikattil (NASA Glenn Research Center)

Results of Phase-II STTR, Nuclear Fuel Testing in the MIT Reactor Facility

Roger X. Lenard (Little Prairie Services), Koroush Shrivan (MIT), David Carpenter (MIT), Nesrin Cetiner (MIT)

A Hybrid Binder Jet and Spark Plasma Sintering Approach to Manufacture Graded Lattice Fuel Elements for Nuclear Thermal Propulsion

Ian Harris (Ohio State), John Horack (Ohio State)

High-Temperature Heat Pipe System for Stirling-Based Fission Surface Power

Jeffrey Diebold (Advanced Cooling Technologies), Sandeep Hatte (Advanced Cooling Technologies), Brett Leitherer (Advanced Cooling Technologies), Calin Tarau (Advanced Cooling Technologies), Srujan Rokkam (Advanced Cooling Technologies), Jeffrey Hopkins (Intuitive Machines)

Experimental Study on Liquid Entrainment Limit in Capillary Heat Pipes for Space Reactors: Preliminary Results

Yohan Kim (Kyung Hee Univ.), Hyungdae Kim (Kyung Hee Univ.)

A Reduced-Order Thermal-Structural-Neutronics Model for KRUSTY-Style Fission Surface Power with Heat-Pipe Constraints

Vishnu Reddy (Georgia Tech), Corey Smith (Georgia Tech), Dan Kotlyar (Georgia Tech)

High-Temperature Heat Pipes for Solid-State SPAR Reactor

Brett Leitherer (Advanced Cooling Technologies), Mason Pratt (Advanced Cooling Technologies), Jeffrey Diebold (Advanced Cooling Technologies), Calin Tarau (Advanced Cooling Technologies), Srujan Rokkam (Advanced Cooling Technologies)

Validation Efforts of Neutronic Transport Methods Applied to HALEU Fuel for Prospective Space Applications

Catalin Alexandru Stafie (Paul Scherrer Institute), Gregory Perret (Paul Scherrer Institute), Alexander Vasiliev (Paul Scherrer Institute), Hakim Ferroukhi (Paul Scherrer Institute)

Analysis of the XE Prime Experimental Reactor at Wet Conditions

Camden Eck (Georgia Tech), Dan Kotlyar (Georgia Tech)

Validation of Cardinal Coupled Neutronics and Thermomechanics Using the KRUSTY Experiments

Michael Anthony Mendes (Univ. Illinois, Urbana-Champaign), Mahmoud Eltawila (Univ. Illinois, Urbana-Champaign), Kevin C. Sawatzky (Univ. Illinois, Urbana-Champaign), April J. Novak (Univ. Illinois, Urbana-Champaign), Richard C. Martineau (Sawtooth Simulation, LLC)

Accelerating Space Nuclear Propulsion Development with Analytical Radiation Source Approximations for Far-Field Environment Modeling

Eleni Mowery (Analytical Mechanics Assoc.), Corey Smith (Analytical Mechanics Assoc.), Benoit Forget (MIT), Jarvis Caffrey (NASA Marshall Space Flight Center)

Binder Jet Additive Manufacturing of Silicon Germanium Thermoelectric Materials

Luke Hansen (Univ. Tennessee, Knoxville), David Hoelzer (ORNL), Trevor G. Aguirre (ORNL), Hsin Wang (ORNL), Brad Johnson (ORNL)

A Model-Based Engineering Toolbox for Thermoelectric Design in Radioisotope Power Generation

Aniruddha Ray (RGS Development)

Three Processing Methods to Produce SiGe for Radioisotope Thermoelectric Generators (RTG)

Hsin Wang (ORNL), Andrew F. May (ORNL), David T. Hoelzer (ORNL), Holden Hyer (ORNL), Mike Zach (ORNL), Thomas Muth (ORNL), Roger G. Miller (ORNL), Brad R. Johnson (ORNL)

Validation Effort and Sensitivity Study for a Skutterudite Thermoelectric Device

Trevor Parker (ORNL), Nolan Goth (ORNL), Hsin Wang (ORNL), Hugo Bouteiller (ORNL), Brad Johnson (ORNL)

Technology Readiness Assessment for Stirling Power Convertor

Young Lee (NASA JPL), Allen Guzik (NASA Glenn Research Center), Ashitey Trebi-Ollennu (NASA JPL), Vladimir Jovovic (NASA JPL), Jean-Pierre Fleurial (NASA JPL), John Elliott (NASA JPL), Geff Ottman (APL), Stephen Izon (APL), Mitchell Rodriguez (NASA Marshall Space Flight Center), Wsam Gazi (NASA Goddard Space Flight Center), Scott Wilson (NASA Glenn Research Center), Ed Lewandowski (NASA Glenn Research Center), Joseph Giglio (INL), Dan Kelly (APL), Gina Dugala (NASA Glenn Research Center), Salvatore Oriti (NASA Glenn Research Center)

Compression Testing of SiGe Thermoelectric Generators for Conductive Applications

Spencer Schaiper (Univ. Dayton), Sam Mohler (Univ. Dayton), Antoine Gagne (Univ. Dayton), Boyd Tolson (Univ. Dayton), Zachary Adamson (Air Force Research Laboratory), Rydge Mulford (Univ. Dayton)

A Test of Record: SiGe 18 Couple Module Test Fixture

Greg Mulderink (Teledyne Energy Systems), Jeffrey Kutsch (Teledyne Energy Systems), Lynda L. Renomeron (Teledyne Energy Systems)

Manufacturing Challenges in Re-Establishing NextGen SiGe Unicouple Production – Tooling

Jeffrey Kutsch (Teledyne Energy Systems), Greg Mulderink (Teledyne Energy Systems), Lynda L. Renomeron (Teledyne Energy Systems)

Multilayered Metal Insulation (MLMI) Manufacturing for Radioisotope Power System Designs

Timothy Hall (Faraday Technology Inc.), Sean Torrez (PSI Inc), Alexander Mednick (PSI Inc)

Harnessing Cloud and AI to Accelerate Space Nuclear Technology Development

Juan Carlos Lopez (Microsoft), Nelli Babayan (Microsoft)

Innovative UZrCN Synthesis by Nitrogen Heat Treatment of UZrC

David Sanches (INL), James Zillinger (INL), Sarah Hamilton (INL)

ZrC Grain Growth at Conditions Relevant to Space Nuclear Propulsion

Katherine Montoya (ORNL), Bryan Conry (ORNL), Wesley Jones (ORNL), Ryan Heldt (ORNL), Brandon Wilson (ORNL), Eddie Lopez-Honorato (ORNL)

Advancing Space Nuclear Fuel Development: A Comprehensive Strategy from Prototyping to Production

Sabrina McCoy (BWX Technologies), Ryan Swanson (BWX Technologies)

Comprehensive Uncertainty Quantification Approach for First of Kind Space Reactors Neutronics Modeling

Chase Lawing (BWX Technologies), Ryan Swanson (BWX Technologies), Andy Rivas (BWX Technologies)

Applying a Comprehensive Uncertainty Quantification Framework to U.S. Government Space Reactor Designs: Insights from Propulsion and Power Reactors

Chase Lawing (BWX Technologies), Ryan Swanson (BWX Technologies), Andy Rivas (BWX Technologies)

Assessing Reactivity Uncertainty in Space Reactors Under Nuclear Data Limitations: Covariance Inconsistency, Missing Benchmarks, and Validation Gaps

Ryan Swanson (BWX Technologies), Chase Lawing (BWX Technologies), Andy Rivas (BWX Technologies)

Merging Additive Manufacturing and Stirling Convertors for Space Power Systems: Opportunities, Challenges, and a Roadmap for 3D-Printed Stirling Engines

Matthew D. Stang (NASA Glenn Research Center)

Atmospheric Reentry Analysis of a Co-60 Heat Source for the JETSON LP Spacecraft

Ryan Potter (Standard Nuclear, Inc.), Brian Ade (Standard Nuclear, Inc.)

Preliminary Design of the JETSON-Low Power Spacecraft

Vincent Bilardo (Intuitive Machines), Chris Tutt (Intuitive Machines), Ben Pigg (Intuitive Machines), Nicholas Marks (Intuitive Machines), Robert Pavelko (Intuitive Machines), Andrew Jordan (Intuitive Machines), John Stanley (Sunpower), Ryan Potter (Standard Nuclear), Ricky Kanak (Standard Nuclear), Robert Hon (West Coast Solutions), Scott Kimbrel (L3Harris/Aerojet Rocketdyne)

Experimental Campaign of Bubble Dynamics in Liquids with AI Analysis for CNTP Research

Julia Kondrat'yev (Univ. Alabama, Hunstville), Olivia Williams (Univ. Alabama, Hunstville), Timothy Blackman (Univ. Alabama, Hunstville), Robert Frederick (Univ. Alabama, Hunstville)

Initial Nitrogen Bubble Formation Results from Simulating a Centrifugal Nuclear Thermal Rocket Engine

Timothy Blackman (Univ. Alabama, Hunstville), Julia Kondrat'yev (Univ. Alabama, Huntsville), Olivia Williams (Univ. Alabama, Huntsville), Robert A. Frederick (Univ. Alabama, Huntsville), L. Dale Thomas (Univ. Alabama, Huntsville)

Improved Gas Visualization Liquid-Gas Models for Centrifugal Nuclear Thermal Propulsion Systems

Pongkrit Darakorn na Ayuthya (Univ. Alabama, Huntsville), Jason T. Cassibry (Univ. Alabama, Hunstville)

A Critical Re-Evaluation of Open-Cycle Liquid-Fueled Nuclear Thermal Concepts in Light of Challenges Yet to be Addressed

Logan R. Horner (Center for Space Nuclear Research), John Stanek (Center for Space Nuclear Research), Abigail Hogue (Center for Space Nuclear Research), Robert C. O'Brien (Center for Space Nuclear Research)

Unusual Chemical Reduction of Np Through Addition of Oxalic Acid

Sara E. Gilson (Young Members Group), Connor J. Parker (ORNL), Kathryn M. Lawson (ORNL)

Comparative Morphology of Neptunium Dioxide: Implications of Synthesis Route

Kathryn M. Lawson (ORNL), Sara E. Gilson (Young Members Group), Chris J. Dye (ORNL), Connor J. Parker (ORNL)

Thermal Decomposition of Neptunium Peroxides

Christopher J. Dye (ORNL), Kathryn M. Lawson (ORNL)

From Chemistry to Performance: Understanding Sol–Gel Fuel Development for Radioisotope Heat Sources

Ekaterina A. Dolgopolova (Zeno Power), Hilary A. Fitzgerald (Zeno Power)

A Digital Microfluidics Platform for Automated Pu-238 Analytics

Neil Taylor (ORNL), Lauren Hoekstra (Univ. Tennessee, Knoxville), Colin Patricelli (Univ. Tennessee, Knoxville), Jisue Moon (ORNL), Ben Roach (ORNL), Kristian Myhre (ORNL)

Advancing Lunar Missions with Next-Generation Radioisotope Power Systems

Lindsey Boles (Zeno Power)

Industrial Manufacturing Process of AmO2 Powder from a Pu Solution

Thierry Prevost (Orano Recycling), Mohamed Barhi (Orano Recycling), Charles Brachon (Orano Recycling)

F5 GPHS RTG: Return to the Future Thermal Vacuum Testing 1985 and 1995

Boyd Allen Tolson (Univ. Dayton), Kenton Sherick (Univ. Dayton), Chadwick Barklay (Univ. Dayton)

Tritium RHUs and Power Sources for the Lunar Surface

Mark Stone (City Labs), James Cabauy (City Labs), Johann Hernandez (City Labs), Krystine Pimentel (City Labs), Jesse Grant (City Labs)

Maturing the European Radioisotope Dynamic Generator (RDG) for Enhanced Reliability and Multi-Mission Capability

Mihails Scepanskis (Deep Space Energy), Janis Priede (Deep Space Energy)

Design and Safety Review of MIT Reactor Hydrogen Environment Nuclear Thermal Propulsion Fuel Test Loop

P. Riley (MIT), N. Cetiner (MIT), A. Seshadri (MIT), D. Carpenter (MIT), K. Shirvan (MIT)

Preliminary Findings of the Experimental Development Unit Cold Flow Test for a Generation Zero NTP Engine

Jason Sheth (NASA), Elaine Hatfield (NASA), Aubrey McKelvy (Amentum ESSCA), Eetu Kohtanen (Amentum ESSCA), Roman Sherrod (Amentum ESSCA), Ryan Swanson (BWXT)

Initial Experiments of a CNTP Engine With the Buckeye BUBLERR

Spencer Christian (Ohio State), Liam Foss (Ohio State), Roshan Robinson (Ohio State), Calvin Chandler (Ohio State), Joshua Naudet (Ohio State), John Horack (Ohio State)

Regulatory Feasibility of Contemporary Atmospheric NTP Testing

Demir Can Erkiralp (Univ. Illinois, Urbana-Champaign), Loïc Magnan (Univ. Illinois, Urbana-Champaign), Tomasz Kozlowski (Univ. Illinois, Urbana-Champaign)

Multichannel Ultraviolet–Visible Absorption Spectroscopy for Radiochemical Process Monitoring

Luke R. Sadergaski (ORNL), Cannon J. Giglio (ORNL), Colin Patricelli (Univ. Tennessee, Knoxville), Sara E. Gilson (ORNL), Sawyer B. Irvine, Kristian G. Myhre (ORNL)

Temperature Dependent Nuclear Data Validation for Systems at Low Temperatures

Eric Aboud (LLNL), Jesse Norris (LLNL), Jacob Glesmann (LLNL), Catherine Percher (LLNL)

Hyperspectral Imaging for Chromatographic Separations

Cannon Giglio (ORNL), Kristian Myhre (ORNL), Sawyer Irvine (ORNL), Shams Al Azzawi (Virginia Commonwealth Univ.)

Multimodal Predictive Tracking of Nd(III) Through Ion Exchange Chromatography Column Separations

Sawyer Irvine (ORNL), Luke Sadergaski (ORNL), Cannon Giglio (ORNL), Tom Hylton (ORNL), Kristian Myhre (ORNL)

Development of a Multivariate Analysis Code for Mediated Electrochemical Oxidization Degradation Product Characterization

Ethan Villarreal (Virginia Commonwealth Univ.), Joshua Leach (ORNL), Briana Schrage (ORNL), Kristian Myhre (ORNL), Jisue Braatz (ORNL)

Experiments of a Radial Turbine Design for Use with the Buckeye BUBLERR

Liam Foss (Ohio State), Spencer Christian (Ohio State)

Estimation of the Radiation Environment in Lunar Polar Regions Using Monte Carlo Methods

Hiroki Iwamoto (Japan Atomic Energy Agency)

Additive Manufacturing of Complex Fuel Geometries for Nuclear Thermal Propulsion

Nathaniel Cavanaugh (Rensselaer Polytechnic Institute), Jie Lian (Rensselaer Polytechnic Institute)

The Power Behind Half a Century of Space Discoveries is on a Precipice

June Zakrajsek (Aerospace Corp.), Emily Hsu (DOE), Stephen Johnson (INL), Carl Sandifer (NASA), Ryan Edwards (NASA), Thomas Sutliff (Aerospace Corp.), Colleen Van Lear (NASA)

Transportation Planning Issues Associated With Surface Transport of a Space Reactor Containing Unirradiated Fuel

Steven J. Maheras (PNNL), Harold E. Adkins Jr. (PNNL)

Spaceport Planning for Space Nuclear System Payloads

David Schleeper (RS&H), Alex Anderson (RS&H)

Terrestrial and Space Nuclear Instrumentation: A Framework for Collaboration Between DOE, NASA, and Industry

N. Dianne Bull Ezell (INL), Sebastian Corbisiero (INL)

Evaluation of Electrically Heated Nuclear Reactor Development Units for the Advancement of Propulsion and Power Technologies

Jackson Cho (NASA Marshall Space Flight Center), Jacob Ondeck (NASA Marshall Space Flight Center), Brian Hoang (Amentum, Space Exploration Division), Matthew Hitt (NASA Marshall Space Flight Center), Tyler Dennis (Antares Nuclear, Inc), Noah Sutton (Antares Nuclear, Inc)

Lunar Nuclear Reactor Neutron Fluence and Gamma Dose Estimates

Brandon A. Wilson (ORNL), Alex Levinsky (LANL), Russell C. Johns (LANL), Tyler R. Steiner (NASA Glenn Research Center)

Multifaceted Considerations for Fission Surface Power Radiation Shielding Design

A. Levinsky (LANL), R. Johns (LANL), M. Kreher (LANL), T. Steiner (NASA Glenn Research Center), B. Musico (LANL), A. Maldonado (LANL), V. Dasari (INL), D. Reel (LANL), J. Smith (LANL), B. Wilson (ORNL), A. Prince (LANL)

Impacts of Terrain on Doses for Fission Surface Power

A. Levinsky (LANL), R. Johns (LANL), M. Kreher (LANL), T. Steiner (NASA Glenn Research Center), B. Musico (LANL), A. Maldonado (LANL), V. Dasari (INL), D. Reel (LANL), J. Smith (LANL), B. Wilson (ORNL), A. Prince (LANL)

Development of Bespoke Dragonfly MMRTG Secondary Cooling Chillers

Leah Sopko (NASA Glenn Research Center), Lauren Clayman (NASA Glenn Research Center), Timothy Erickson (Johns Hopkins APL), Paul Ostdiek (Johns Hopkins APL), Dave Smith (Johns Hopkins APL)

Silicon Germanium Thermoelectric Energy Conversion: The Application of Customized Modules in a Novel System

Kenton Sherick (Univ. Dayton Research Institute), Aniruddha Ray (RGS Development BV), Roy Compas (RGS Development BV), Aravind Babu (RGS Development BV), Wim van Schaik (RGS Development BV), Boyd A. Tolson (Univ. Dayton Research Institute), Maarten den Heijer (RGS Development BV), Chadwick D. Barklay (Univ. Dayton Research Institute)

>30,000 Hours Lifetime Testing of SiGe Unicouples Prepared with SPS Materials for GPHS-RTG

Jonathan Pierce (Johns Hopkins APL), Richard Ung (Johns Hopkins APL), Jake Ballard (Johns Hopkins APL), Tim Holgate (Johns Hopkins APL), Rasdip Singh (Soal Technologies), Mousumi Mitra (Univ. Virginia), Scott Misture (Alfred Univ.), Joseph Poon (Univ. Virginia), Timothy Erickson (Johns Hopkins APL), Paul Ostdiek (Johns Hopkins APL), Rama Venkatasubramanian (Johns Hopkins APL)

Multiple Cycle Irradiation of Pu-238 Production Targets in the Advanced Test Reactor at Idaho National Laboratory

Jill R. Mitchell (INL)

NiMo Overlays for Improved Operational Resilience in Molten Salt Reactors

T.D. Hall (Faraday Technology Inc.), S. O'Connell (Faraday Technology Inc.), R. Pillai (ORNL), H. Garich (Faraday Technology Inc.), M. Inman (Faraday Technology Inc.), S. Cambier` (ORNL), T. Gosling (Gosco Valves), C. Beamer (Quintus Technologies)

Electrodeposition of Refractory Metals in Molten Salts: Process Parameters, and Coating Characterization

Olivia R. Dale (LANL), Nathaniel Rood (LANL), Marisa Monreal (LANL), Jarom Chamberlain (LANL), Adrien Terricabras (LANL)

Production of Refractory Metal Coatings on Carbon Substrates Through Metalliding in Molten Fluoride Salts

Nathaniel Rood (LANL), Olivia Dale (LANL), Adrien Terricabras (LANL), Marisa Monreal (LANL), Jarom Chamberlain (LANL)

Updates on Molten Salt Coating Capabilities at Los Alamos National Laboratory

Jarom Chamberlain (LANL), Olivia Dale (LANL), Nathaniel Rood (LANL), Adrien Terricabras (LANL), Marisa Monreal (LANL)

Update on the Development of an Americium-Based Oxide Fuel Form for European Radioisotope Power Systems

Ramy Mesalam (Univ. Leicester), Richard M. Ambrosi (Univ. Leicester), Alessandra Barco (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Joanna Lucas (Univ. Leicester), Tony Crawford (Univ. Leicester), Rob Tute (Univ. Leicester), Kris Bell (Univ. Leicester), Gareth Bustin (Univ. Leicester), James Pearson (Univ. Leicester), Charlotte Bouldin (Univ. Leicester), Piers Slater (Perpetual Atomics), Pierre Coquay (ESA), Christophe Fongarland (ESA), Ana Brandao (ESA), Joe Lapinskas (QSA Global Inc.), Mark Shilton (QSA Global Inc.), Nathan Gardella (QSA Global Inc.), Matt Potenza (QSA Global Inc.)

Operational Tritium Loading Facility for Space Power and Heater Devices

Krystine Pimentel (City Labs), Peter Cabauy (City Labs), Mark Stone (City Labs)

NTP Engine Performance and Concept of Operations Assessment for Manned Mars Missions With Consideration of Gravity Losses and Reactor Cooling

F. Bertrand (CEA), A. Simmonet (CEA), P. Sciora (CEA), V. Brun-Magaud (CEA), L. Matteo (CEA), E. Proust (CEA), M. Mascaron (CEA), M.L. Schlegel (CEA), V. Girardin (ESA)

Jupiter Icy Moons Orbiter Reimagined: Leveraging NASA's Fission Surface Power and Modern Launch Vehicles

Brian J. Muzek (L3Harris Aerojet Rocketdyne), C. Russell Joyner II (L3Harris Aerojet Rocketdyne), Timothy Kokan (L3Harris Aerojet Rocketdyne), Rodney W. Noble (L3Harris Aerojet Rocketdyne), Christopher B. Reynolds (L3Harris Aerojet Rocketdyne)

Leveraging Advanced Nuclear Thermal Propulsion for Human Mars Exploration

Britton Reynolds (L3Harris Technologies), Claude R. Joyner II (L3Harris Technologies), Timothy Kokan (L3Harris Technologies), Brian J. Muzek (L3Harris Technologies)

Conceptual Design of a Nuclear Electric Propulsion Mission for Direct Rendezvous With Uranus

Monica A. Salunkhe (Univ. Alabama, Huntsville), L. Dale Thomas (Univ. Alabama, Huntsville)

Point Design for a Nuclear Electric Propulsion Flagship Mission to Uranus

Matthew Duchek (AMA), Sean Greenhalge (AMA), Adam Boylston (Analytical Mechanics Assoc.), Emanuel Grella (Analytical Mechanics Assoc.), Christopher Harnack (Analytical Mechanics Assoc.), William Machemer (Analytical Mechanics Assoc.), Annabella Shaffer (Analytical Mechanics Assoc.), Corey Smith (Analytical Mechanics Assoc.)

Reactor Decision Assessment Platform (ReDAP)

Stephanie Keve (Noblis, Inc.), Ben Miller (Noblis, Inc.), Ivan Limansky (Noblis, Inc.), Dave Bilinski (Noblis, Inc.), Adam Turbett (Noblis, Inc.), Keri Robinson (Noblis, Inc.), Michael Kim (Noblis, Inc.), Theresa Perry (Noblis, Inc.), Clark Bee (Noblis, Inc.)

The Radsetta Stone – Establishing a Common Environment Taxonomy Across Space Nuclear Technologies

Tyler R. Steiner (NASA Glenn Research Center), Jarvis A. Caffrey (NASA Marshall Space Flight Center), N. Dianne Bull Ezell (ORNL)

Maneuvering Without Regret: The Effective Specific Impulse of the Hybrid Propulsion Engine and Reactor Impulse for Orbital Navigation

Logan R. Horner (Center for Space Nuclear Research), Devin Boggs (Center for Space Nuclear Research), John Stanek (Center for Space Nuclear Research), Abigail Hogue (Center for Space Nuclear Research), Daniel Gadaleta (Center for Space Nuclear Research), Robert C. O'Brien (Center for Space Nuclear Research)

Success in the Lunar and Mars Frontiers Enabled by Radioisotope Power Systems

A.C. Charania (Zeno Power)

The Future of Deep Space Exploration Without Pu-238

William James Adams (Jim Adams World, LLC), James L. Green (Space Science Endeavors), Ralph L. McNutt Jr. (Johns Hopkins Univ. APL), June F. Zakrajsek (Aerospace Corp.)

REXIS - Rendezvous With Legacy Nuclear Reactors on Earth Orbit

Michal Marčišovský (Stellar Nuclear), Edita Bromová (Stellar Nuclear), Marek Strnad (Czech Technical Univ.), Martin Ševeček (Czech Technical Univ.), Adam Hláčik (Stellar Exploration)

Voyager 1 and 2, Cassini, New Horizons, Curiosity, and Perseverance – Overachieving Beyond all Expectations

Thomas J. Sutliff (Aerospace Corp.), Ralph L. McNutt Jr. (Johns Hopkins Univ.)

Dragonfly Mission MMRTG Launch System Integration for the a Horizontal Processing Launch Vehicle System

Steven R. Vernon (Johns Hopkins APL), Hoi Yee Tom (Johns Hopkins APL)

European Space Agency – European Autonomous Access to Space With its Operational Capability With Launches On-Boarding Nuclear Power Sources

David Le Falcher (ESA), Gauthier Poullin (Airbusprotect), Ludovic Duvet (ESA), Pierre Coquay (ESA), Christophe Fongarland (ESA), Denis Rebuffat (ESA), Frederic Lattwein (Arianegroup), Cedric Lemarié (Arianegroup), Yannick Herlem (Arianegroup)

Development of Figures of Merit for Size, Weight, Power and Cost Comparison of Solar and Nuclear Space Power Systems

C. A. Lenyk (Astrion), J.E. Winter (Air Force Research Lab), P.M. Carpenter (Astrion), N.A. Johansson (Astrion), T.J. Allen (Astrion), M.C. Tomb (Astrion), K. M. Church (Astrion), S. K. Fairchild (Astrion)

Coupling Mission Requirements With System-Level Analysis for Rapid Evaluation of Nuclear Thermal Propulsion Architectures

Sonal Mehta (Georgia Tech), Camden Eck (Georgia Tech), Robert Ajluni (Georgia Tech), Cole Ajluni (Georgia Tech), Sabrina Mayor (Georgia Tech), Bradford Robertson (Georgia Tech), Dimitri N. Mavris (Georgia Tech), Dan Kotlyar (Georgia Tech)

Comparative Analysis of Space Nuclear Propulsion Systems for Cislunar Missions: Part II – Mission Design for Large Payload Delivery

Saroj Kumar (University of Alabama in Huntsville), Alexander C. Bendoyro (University of Alabama in Huntsville), Dale Thomas (The University of Alabama in Huntsville- Propulsion Research Center)

Thin Film Isotope Nuclear Engine Rocket (TFINER) Preliminary Launch Safety Analysis

Brian Casel (The Charles Stark Draper Laboratory, Inc.), James Bickford (The Charles Stark Draper Laboratory, Inc.)

Anticipating Cyber Threats to Space Nuclear Systems: Engineering and Policy Options

Kathleen A. Doty (PNNL), David A. Koch (PNNL), Kevin M. Eldrige (PNNL)

Mission Pull and Fission Surface Power

Frank A. Putzu (PNNL)

Impact Tests for the Americium-Based Radioisotope Heater Unit (Am-RHU)

Alessandra Barco (Univ. Leicester), Ramy Mesalam (Univ. Leicester), Tony Crawford (Univ. Leicester), Richard Ambrosi (Univ. Leicester), Rob Tute (Univ. Leicester), Kris Bell (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Adam White (Univ. Leicester), Joanna Lucas (Univ. Leicester), Pierre Coquay (ESA), Christophe Fongarland (ESA)

Strategic Messaging’s Impact on the Public’s Perception of Space Nuclear–Critical Role of the Community to Support Mission Success for All

Kristin Jansen (NASA Glenn Research Center), Kerri Beisser (Aerospace Corp.), Margaret Simon (Aerospace Corp.), David Lam (ARES Technical Services Corporation)

Enabling Mission Success: Effective Joint Information Center (JIC) Communication During the Mars 2020 Launch

Vicky Ryan (JPL), Paul VanDamme (JPL), Douglas Isbell (NASA)

Closing the Gap: Policy Reforms Needed to Enable U.S. Space Nuclear Leadership

John Jacobs (Zeno Power)

Payload Review and FAA Determination for Tritium Power Sources

Peter Cabauy (City Labs), Kevin Makinson (Nuclear Consulting, LLC), Mark Stone (City Labs)

Launch Safety Consequence Analysis for a Generic Space Nuclear Reactor Mission

D.J. Clayton (Sandia), M.L. Smith (Sandia)

U.S. Regulatory Gaps in Commercial Space Nuclear Activities

Kate Doty (PNNL), Catrina Melograna (PNNL), Frank Putzu (PNNL)

So, You Want a Reactor on the Moon: Comprehensive Technical, Policy, and Regulatory Considerations for Fission Power on the Lunar Surface

Aubrey Means (PNNL), Jim Cabe (PNNL), Katherine Miller (PNNL)

Aligning Legal Frameworks With Technological Progress: Modernizing Governance of Nuclear Power Sources in Space

Zsófia Biró (University of Pécs)

Launch Vehicle Safety Considerations for Space Nuclear Missions

Annette M.E. Parks (Zeno Power), Jaclyn Wiley (Zeno Power), Alexander Q. Gilbert (Zeno Power)

A Principles‑Based Liability, Insurance, and Indemnification Architecture for Commercial Space Nuclear Missions

Alexander Gilbert (Zeno Power Systems), Harsh S. Desai (Zeno Power Systems)

Radiological Consequences Assessment for Safety Analyses of Future Space Missions with Nuclear Power Source

Ludovit Liptak (ABmerit Ltd. - nuclear and space), Michal Marcisovsky (ABmerit Ltd. - nuclear and space), Maria Marcisovska (ABmerit Ltd. - nuclear and space), Peter Carny (ABmerit Ltd. - nuclear and space), Eva Fojcikova (ABmerit Ltd.-nuclear and space)