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The Utah State University Materials Physics Group (MPG) performs state-of-the-art ground-based testing of space environment effects on aerospace materials. These include electrical charging and electron transport properties of both conducting and insulating materials; they emphasize studies of electron emission, conductivity, luminescence, and electrostatic discharge. Our research group consists of faculty, graduate, and undergraduate researchers. Publications and presentations are archived here.

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2015

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Model for Charge Injection with Electron Beams into Highly Disordered Insulating Materials, JR Dennison, Alec M. Sim, and Gregory Wilson; American Physical Society March Meeting 2015

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of Thermal Treatment on Electrical and Physical Properties of Coated Ceramics, K. Guerch, T. Paulmier, Justin Dekany, JR Dennison, S. Guillemet-Fritsch, and P. Lenormand; ISMSE 13

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Small Satellite Verification and Assessment Test Facility with Space Environments Effects Ground-testing Capabilities, Eric Stromberg, Crystal Frazier, Lisa Montierth Phillipps, Alex Souvall, JR Dennison, and James S. Dyer; 29th Annual AIAA/USU Conference on Small Satellites

2014

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Dual-defect Model of Electrostatic Discharge in Polymeric Dielectrics, Allen Andersen and JR Dennison; Physics Colloquium

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Lifetimes of Polymeric Dielectrics: a Dual-defect Model, Allen Andersen and JR Dennison; American Physical Society Four Corner Section Meeting

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Pre-breakdown Arcing and Electrostatic Discharge in Dielectrics under High DC Electric Field Stress, Allen Andersen and JR Dennison; 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena

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Electrostatic Discharge and Endurance Time Measurements of Spacecraft Materials: A Defect-Driven Dynamic Model, Allen Andersen, JR Dennison, Alec Sim, and Charles Sim; 13th Spacecraft Charging Technology Conference

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Electrostatic Discharge and Endurance Time Measurements of Spacecraft Materials: A Defect-Driven Dynamic Model, Allen Andersen, JR Dennison, Alec Sim, and Charles Sim; 13th Spacecraft Charging Technology Conference

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Lessons Learned from the Statistical Analysis of Measurements of the Energetic Electron Bombardment of Epoxy ‘Glue Dots, Justin Christensen, Justin Dekany, and JR Dennison; James Webb Space Telescope Spacecraft Electrical Associated Working Group

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Stochastic Variations of Cathodoluminescent Intensity of Bisphenol/Amine Epoxy Exposed to Energetic Electron Bombardment, Justin Christensen, Justin Dekany, and JR Dennison; Utah State University Student Showcase

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Modeling the Energy Dependent Cathodoluminescent Intensity of a Carbon Composite Material, Justin Christensen, Kelby T. Peterson, Justin Dekany, and JR Dennison; American Physical Society Four Corner Section Meeting

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Density of State Models and Temperature Dependence of Radiation Induced Conductivity, Jodie Corbridge Gillespie, JR Dennison, and Alec M. Sim; 13th Spacecraft Charging Technology Conference

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Variations in Cathodoluminescent Intensity of Spacecraft Materials Exposed to Energetic Electron Bombardment, Justin Dekany, Justin Christensen, JR Dennison, Amberly Evans, Greg Wilson, Todd Schneider, Charles W. Bowers, and Robert H. Meloy; 13th Spacecraft Charging Technology Conference

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Variations in Cathodoluminescent Intensity of Spacecraft Materials Exposed to Energetic Electron Bombardment, Justin Dekany, Justin Christensen, JR Dennison, Amberly Evans Jensen, Gregory Wilson, Todd Schneider, Charles W. Bowers, and Robert Meloy; 13th Spacecraft Charging Technology Conference

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Measurements of Intrinsic Electron Emission Yields of High Resistivity Ceramic Materials, Justin Dekany, JR Dennison, Ryan Carl Hoffmann, Clint D. Thomson, and Ender Savrun; 13th Spacecraft Charging Technology Conference

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Guesstimation: The Art of Getting About the Right Answer, JR Dennison; Gray Matters Seminar Series

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The Dynamic Interplay Between Spacecraft Charging, Space Environment Interactions and Evolving Materials, JR Dennison; 13th Spacecraft Charging Technology Conference

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Synergistic Models of Electron Emission and Transport Measurements of Disordered SiO2, JR Dennison, Justin Dekany, Jodie Corbridge Gillespie, Phil Lundgreen, Allen Andersen, Amberly Evans Jensen, Gregory Wilson, Alec Sim, and Ryan Hoffmann; 13th Spacecraft Charging Technology Conference

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Synergistic Models of Electron Emission and Transport Measurements of Disordered SiO2, JR Dennison, Justin Dekany, Jodie C. Gillespie, Phil Lundgreen, Allen Andersen, Amberly Evans, Greg Wilson, Alec Sim, and Ryan Carl Hoffmann; 13th Spacecraft Charging Technology Conference

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Small Satellite Space Environments Effects Test Facility, JR Dennison, Justin Dekany, Kent Hartley, James S. Dyer, and Robert H. Johnson; 28th Annual AIAA/USU Conference on Small Satellites

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Cathodolumiescence Studies of the Density of States of Disordered Silicon Dioxide, JR Dennison and Amberly Evans Jensen; American Physical Society Four Corner Section Meeting

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Small Satellite Space Environments Effects Test Facility, JR Dennison, Kent Hartley, Lisa Montierth Phillipps, Justin Dekany, James S. Dyer, and Robert Johnson; 28th Annual AIAA/USU Conference on Small Satellites

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Small Satellite Space Environments Effects Test Facility, JR Dennison, Kent Hartley, Lisa Montierth Phillipps, Robert Johnson, Justin Dekany, and James Dyer; 8th Annual USU Space Dynamics Laboratory IR&D Enabling Technologies Demonstration Day

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Charge Transport and Electron Emission of Disordered Materials: Extensions of the Walden-Wintle Model for Charge Injection with Electron Beams, JR Dennison, Alec Sim, Gregory Wilson, and Jodie C. Gillespie; 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena

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Defects Density of States Model of Cathodoluminescent Intensity and Spectra of Disordered SiO2, Amberly Evans Jensen and JR Dennison; 13th Spacecraft Charging Technology Conference

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Defects Density of States Model of Cathodoluminescent Intensity and Spectra of Disordered SiO2,, Amberly Evans Jensen and JR Dennison; 13th Spacecraft Charging Technology Conference

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Density of State Models and Temperature Dependence of Radiation Induced Conductivity, Jodie C. Gillespie, JR Dennison, and Alec Sim; 13th Spacecraft Charging Technology Conference

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Investigations of Electrical and Physical Properties of Ceramic Materials for Spacecraft Applications, Kevin Guerch and JR Dennison; Invited Seminar

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Discharge Breakdown Analyses, Sam Hansen, JR Dennison, and Allen Andersen; American Physical Society Four Corner Section Meeting

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Electrostatic Discharge Breakdown Analyses, Sam Hansen, JR Dennison, and Allen Andersen; Utah State University Student Showcase

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Improved Conductivity Measurements of Highly Disordered Insulating Materials, Phil Lundgreen, Justin Dekany, and JR Dennison; Conference on Undergraduate Research (UCUR) Meeting

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Methods to Decrease Error in Conductivity Measurements of Highly Disordered Materials, Phil Lundgreen, Justin Dekany, and JR Dennison; Utah Conference on Undergraduate Research Meeting

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Simulation of UV Radiation Degradation of Polymers on MISSE-6 in the Low Earth Orbit Environment, Philip Lundgreen, Justin Dekany, and JR Dennison; Utah State University Student Showcase

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Spae Effects Survivability Testing, Lisa Montierth Phillipps, JR Dennison, Kent Hartley, Robert H. Johnson, Justin Dekany, and James S. Dyer; American Physical Society Four Corner Section Meeting

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Simulation of UV Induced Discoloration on Space Polymers, Kelby T. Peterson and JR Dennison; Spring 2013 Meeting of the Society of Physics Students, Zone 15 Conference

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The Effect of Acceleration on Nucleate Boiling and Bubble Departure Dynamics in Microgravity, Jenica Sparrow, Heng Ban, and JR Dennison; Utah Research on Capitol Hill

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Cathodoluminescence Events Coincident with Muon Detection, Kenneth Zia; American Physical Society Four Corner Section Meeting

2013

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Charge Transport and Electrical Degradation Research for Power Grid Applications, Allen Andersen and JR Dennison; Utah State University Graduate Student Research Symposium

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Electrostatic Discharge in Solids, Allen Andersen and JR Dennison; USU Physics Colloquium

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Pre-breakdown Arcing in Dielectrics under Electric Field Stress, Allen Andersen and JR Dennison; American Physical Society Four Corner Section Meeting, University of Denver, Denver, CO, October 18-19, 2013

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Diverse Light Emissions from Epoxy Due to Energetic Electron Bombardment, Justin Christensen, Justin Dekany, and JR Dennison; American Physical Society Four Corner Section Meeting

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An Overview of the Materials Physics Group And Potential Collaborations with LAPLACE, JR Dennison; Invited Seminar, Laplace Laboratoire Plasma et Conversion D'Energie, Universite Paul Sabatier, Toulouse, France

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Evolution of Materials Properties and the Space Plasma Environment through Interactions and the Dynamics of Spacecraft Charging, JR Dennison; Invited Seminar, Laplace Laboratoire Plasma et Conversion D'Energie, Universite Paul Sabatier, Toulouse, France

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Radiation Induced Conductivity and Cathodoluminescence of Disordered SiO2, JR Dennison; Physics Colloquium, Idaho State University

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Diverse Electron-induced Optical Emissions from Space Observatory Materials at Low Temperatures, JR Dennison, Amberly Evans Jensen, Greg Wilson, Justin Dekany, Charles W. Bowers, and Robert Meloy; SPIE Optics and Photonics Conference

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Evolution of Thermally Annealed Graphitic Amorphous Carbon towards Graphene: Structure, Vibrational Dynamics, Electron Emission and Band Gap, JR Dennison, Jodie C. Gillespie, and Sterling Smith; American Physical Society March Meeting

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Pulse Electro-Acoustic (PEA) Measurements of Embedded Charge Distributions, JR Dennison and Lee H. Pearson; SPIE Optics and Photonics Conference

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Extensions of the Walden-Wintle Model of Charge Transport in Disordered Materials for Charge Injection with Electron Beams, JR Dennison, Greg Wilson, Alec Sim, and Jodie C. Gillespie; American Physical Society Four Corner Section Meeting

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Consequences of Cathodoluminescence for Cryogenic Applications of SiO2-based Space Observatory Optics and Coatings, Amberly Evans, JR Dennison, Greg Wilson, Justin Dekany, Charles W. Bowers, Robert H. Meloy, and James Heaney; SPIE Optics and Photonics Conference

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On the Feasibility of Detecting Spacecraft Charging and Arcing by Remote Sensing, Dale C. Ferguson, Jeremy Murray-Krezan, David A. Barton, JR Dennison, Stephen Gregory, and Alec Sim; AIAA Atmospheric and Space Environments Conference

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The Correlation Between Radiation Induced Conductivity (RIC) and Electron Beam Induced Luminescence in Disordered SiO2, Ryan Carl Hoffmann, JR Dennison, Greg Wilson, and Amberly Evans Jensen; 11th IEEE International Conference on Solid Dielectrics

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Time Dependent Conductivity of Low Density Polyethylene, Phil Lundgreen, Justin Dekany, and JR Dennison; American Physical Society Four Corner Section Meeting

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Atomic Oxygen Modification of the Nanodielectric Surface Composition of Carbon-Loaded Polyimide Composites, Kelby T. Peterson and JR Dennison; American Physical Society Four Corner Section Meeting

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Simulation of UV Induced Discoloration on Space Polymers, Kelby T. Peterson and JR Dennison; Spring 2013 Meeting of the Society of Physics Students, Zone 15 Conference

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Power and Charge Deposition and Electron Transport in Disordered SiO2 Layers Under Electron Bombardment, Greg Wilson, JR Dennison, Amberly Evans Jensen, and Justin Dekany; American Physical Society March Meeting

2012

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An electron-photon duel: cathodoluminescence in disordered polymeric materials, Douglas Ball, Alec Sim, and JR Dennison

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Muon Contribution to Cathodoluminescence Tests?, Justin Dekany, Allen Andersen, and JR Dennison; Fall 2012 Meeting of the Four Corner Section of the American Physical Society

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Ultrahigh Vacuum Cryostat System for Extended Low Temperature Space Environment Testing, Justin Dekany, Robert H. Johnson, Gregory Wilson, Amberly Evans, and JR Dennison; Proceedings of the 12th International Spacecraft Charging and Technology Conference

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Electron Transport Models and Precision Measurements in a Constant Voltage Chamber, Justin Dekany, Alec Sim, Jerilyn Brunson, and JR Dennison; Proceedings of the 12th International Spacecraft Charging and Technology Conference

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The Dynamic Interplay Between Spacecraft Charging, Space Environment Interaction and Evolving Materials, JR Dennison; 12th Spacecraft Charging Technology Conference

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Unified Density of States Based Model of Electron Transport and Emission of Spacecraft Materials, JR Dennison and Alec Sim; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan

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Unified Density of States Based Model of Electron Transport and Emission of Spacecraft Materials, JR Dennison and Alec Sim; 12th Spacecraft Charging Technology Conference

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Temperature-Dependent Radiation Induced Conductivity of Diverse Highly Disordered Insulating Materials, JR Dennison, Gregory Wilson, and Jodie C. Gillespie; Four Corner Sections Meeting American Physical Society

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Extending the Band Model of Disordered SiO2 Through Cathodoluminescence Studies, Amberly Evans, Gregory Wilson, JR Dennison, and Justin Dekany; Four Corner Sections Meeting American Physical Society New Mexico Institute of Mining and Technology Socorro, NM October 26-27, 2012

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Low Temperature Cathodoluminescence in Disordered SiO2, Amberly Evans Jensen, Gregory Wilson, Justin Dekany, and JR Dennison; National Council of Undergraduate Research

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Low Temperature Cathodoluminescence of Space Observatory Materials, Amberly Evans Jensen, Gregory Wilson, Justin Dekany, and JR Dennison; 12th Spacecraft Charging Technology Conference

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The Effect of Space Environment on Wireless Communication Devices' Performance, Landon Hillyard and JR Dennison; Utah State University Student Showcase

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The Effect of Space Environment on Wireless Communication Devices' Performance, Landon Hillyard, JR Dennison, and Jan J. Sojka; Utah Research on Capitol Hill

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In Situ Surface Voltage Measurements of Dielectrics Under Electron Beam Irradiation, Joshua L. Hodges, JR Dennison, Justin Dekany, Gregory Wilson, Amberly Evans, and Alec Sim; Proceedings of the 12th International Spacecraft Charging and Technology Conference

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In Situ Surface Voltage Measurements of Dielectrics Under Electron Beam Irradiation, Joshua L. Hodges, JR Dennison, Justin Dekany, Gregory Wilson, Amberly Evans Jensen, and Alec Sim; 12th Spacecraft Charging Technology Conference

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Small Scale Simulation Chamber for Space Environment Survivability Testing, Robert H. Johnson, Lisa D. Montierth, JR Dennison, James S. Dyer, Ethan Lindstrom, and Alex Chanson; Proceedings of the 12th International Spacecraft Charging and Technology Conference

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Small Scale Simulation Chamber for Space Environment Survivability Testing, Robert H. Johnson, Lisa Montierth, JR Dennison, James S. Dyer, and Ethan R. Lindstrom; 12th Spacecraft Charging Technology Conference

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Simulation Chamber for Space Environment Survivability Testing, Lisa Montierth, Robert H. Johnson, JR Dennison, and James S. Dyer; Utah State University Student Showcase

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Simulation Chamber for Space Environment Survivability Testing, Lisa Montierth, Robert H. Johnson, JR Dennison, and James S. Dyer; National Council of Undergraduate Research

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Micrometeoroid from MISSE Examined to Understand the Effects of the Space Environment on Space Suit, Kelby Peterson and JR Dennison; Utah State University Student Showcase

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Space Impact Ejecta Model of Micrometeoroid Collision on MISSE-6, Kelby Peterson and JR Dennison; Phillips Air Force Research Laboratory, Albuquerque, NM

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Micrometeoroid from MISSE Examined to Understand the Effects of the Space Environment on Space Suit, Kelby T. Peterson and JR Dennison; National Council of Undergraduate Research

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Space Impact Ejecta Model of Micrometeoroid Collision on MISSE-6, Kelby T. Peterson and JR Dennison; American Physical Society Four Corner Section Meeting

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Space Impact Ejecta Model of Micrometeoroid Collision on MISSE-6, Kelby T. Peterson and JR Dennison; Fall 2012 Meeting of the Four Corner Section of the American Physical Society New Mexico Institute of Mining and Technology Socorro, NM October 26-27, 2012

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Electric Field Dependence of the Time to Electrostatic Breakdown in Insulating Polymers, Charles Sim, Alec Sim, and JR Dennison; National Council of Undergraduate Research

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Electric Field Dependence of the Time to Electrostatic Breakdown in Insulating Polymers, Charles Sim, Alec Sim, and JR Dennison; Utah State University Student Showcase

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Defect-Driven Dynamic Model of Electrostatic Discharge and Endurance Time Measurements of Polymeric Spacecraft Materials, Charles Sim, Alec Sim, JR Dennison, and Matthew Stromo; 12th Spacecraft Charging Technology Conference

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Histological Analysis of Biological Tissues Using High-Frequency Ultrasound, Kristina Sorensen; Tim Doyle; B. D. Borget; M. Cervantes; H, A. Chappell; B. J. Curtis; M. A. Grover; J. E. Roring; J. E. Stiles; and L. A. Thompson; 164th Meeting of the Acoustical Society of America, Kansas City, MO

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High-Frequency Pulsed-Electro-Acoustic (PEA) Measurements for Mapping Charge Distribution, Kristina Sorensen, Lee H. Pearson, JR Dennison, Timothy E. Doyle, and Kent D. Hartley; 2012 APS 4-Corners Section Regional Meeting

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High-Frequency Pulsed-Electro-Acoustic (PEA) Measurements for Mapping Charge Distribution, Kristina Sorensen, Lee H. Pearson, JR Dennison, Timothy E. Doyle, and Kent D. Hartley; American Physical Society Four Corner Section Meeting

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The Effect of Acceleration on Nucleate Boiling and Bubble Departure Dynamics in Microgravity, Jenica Sparrow, Heng Ban, and JR Dennison; National Council of Undergraduate Research

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Electron Energy Dependent Charging Effects of Multilayered Dielectric Materials, Gregory Wilson, JR Dennison, Amberly Evans, and Justin Dekany; Proceedings of the 12th International Spacecraft Charging and Technology Conference

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Power and Charge Deposition in Multilayer Dielectrics undergoing Monoenergetic Electron Bombardment, Gregory Wilson, JR Dennison, Amberly Evans, and Justin Dekany; American Physical Society Four Corner Section Meeting

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Electron Energy Dependent Charging Effects of Multilayered Dielectric Materials, Gregory Wilson, JR Dennison, Amberly Evans Jensen, and Justin Dekany; 9th Intermountain Graduate Research Symposium

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Power and Charge Deposition in Multilayer Dielectrics undergoing Monoenergetic Electron Bombardment, Gregory Wilson, JR Dennison, Amberly Evans Jensen, and Justin Dekany; Phillips Air Force Research Laboratory, Albuquerque, NM

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Power and Charge Deposition in Multilayer Dielectrics from Monoenergetic Electron Bombardment, Gregory Wilson, Amberly Evans, Justin Dekany, and JR Dennison; Four Corner Sections Meeting American Physical Society New Mexico Tech Socorro, NM October 26 & 27, 2012

2011

Electron Induced Luminescence of Insulating Polymeric Materials, Douglas Ball, Alec Sim, Josh Hodges, Ryan Hoffman, and JR Dennison; Electron Induced Luminescence of Insulating Polymeric Materials

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Exploring the Universe… One Electron at a Time, JR Dennison; Physics Colloquium, Utah State University

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Temperature Dependence of SiO2 Electron-Induced Luminescence, Amberly Evans Jensen, Gregory Wilson, and JR Dennison; American Physical Society Four Corner Section Meeting

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Temperature Dependence of SiO2 Electron-Induced Luminescence, Amberly Evans Jensen, Gregory Wilson, and JR Dennison; James Webb Space Telescope Spacecraft Electrical Associated Working Group

Development of Optimal Bubble-Seeding Microheaters and Video System to Study Nucleate Boiling Heat Transfer in Microgravity, Ryan Martineau, Landon Hillyard, Iggy Matheson, JR Dennison, and Heng Ban; Development of Optimal Bubble-Seeding Microheaters and Video System to Study Nucleate Boiling Heat Transfer in Microgravity

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Surface Geometry And Heat Flux Effect On Thin Wire Nucleate Pool Boiling Of Subcooled Water In Microgravity, Troy Munro, Heng Ban, and JR Dennison; Utah Academy of Sciences, Arts & Letters 2011 Annual Conference

The Effect of Surface Geometry and Heat Flux on Thin Wire Nucleate Pool Boiling of Subcooled Water in Microgravity, Troy Munro, Heng Ban, and JR Dennison; The Effect of Surface Geometry and Heat Flux on Thin Wire Nucleate Pool Boiling of Subcooled Water in Microgravity

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Surface Geometry and Heat Flux Effects onNucleate Pool Boiling of Subcooled Water in Microgravity, Troy Munro, Andrew Fassman, Heng Ban, and JR Dennison; AIAA Region VI Student Conference, San Diego State University San Diego, California

Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics, Troy Munro, Andrew Fassmann, Heng Ban, and JR Dennison; Effects of Micro-gravity on Thin-Wire Subcooled Nucleate Boiling Dynamics