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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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Events from 2017

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Measuring the Conductivity of Highly Insulating Materials with Constant Voltage Chamber Modifications, David King

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Microcontroller and Memory Card Survivability in Space Conditions, Windy Olsen and Brian Wood

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How the Space Environment Affects Seed Germination and Growth, Alexander Souvall, Gareema Dhiman, Andre Nguyen, Michelle Jung, Astrid Ji, Takayuki Sakai, Takahiro Shimizu, Midori Morikawa, Shusuke Okita, Akihiro Nagata, Shaunda Wenger, Toshihiro Kameda, and JR Dennison; Utah Research on Capitol Hill

2016

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Perspectives on the Distributions of ESD Breakdowns for Spacecraft Charging Applications, Allen Andersen, Krysta Moser, and JR Dennison; 14th Spacecraft Charging Technology Conference

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Voltage Ramp-rate Dependence of DC Breakdown in Polymeric Insulators: Physical Models versus Data, Allen Andersen, Krysta Moser, and JR Dennison; IEEE CEIDP

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Temporal and Spatial Correlations in Electron-induced Arcs of Adjacent Dielectric Islands, Justin Christensen, JR Dennison, and Justin Dekany; 14th Spacecraft Charging Technology Conference

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Absolute Electron Emission Calibration: Round Robin Tests of Au and Polyimide, JR Dennison, Justin Christensen, Clint Thomson, Neal Nickles, Robert E. Davies, Mohamed Belhaj, Kazuhiro Toyoda, Arifur R. Khan, Kazutaka Kawasaki, Shunsuke Inoue, Isabel Montero, Maria E. Davila, and Leandro Olano

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Synergistic Models of Electron Emission and Transport Measurements of Disordered SiO2, JR Dennison, Jodie Corbridge Gillespie, Allen Andersen, Amberly Evans Jensen, Gregory Wilson, Justin Dekany, Alec M. Sim, and Ryan Hoffmann; 14th Spacecraft Charging Technology Conference

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CubeSat Space Environments Effects Studied in the Space Survivability Test Chamber, JR Dennison, Gregory Wilson, Alex Souvall, Ben Russon, and Katie Gamaunt; 30th Annual AIAA/USU Conference on Small Satellites

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UV Degradation Effects: Terrestrial versus Space Environment, Katie Gamaunt, Krysta Moser, Alex Souvall, and JR Dennison; Utah State University Student Research Symposium

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High Altitude Dependence of Ionizing Radiation from Cosmic Rays, Zack Gibson, Akihiro Nagata, Midori Morikawa, Takuyuki Sakai, Takahiro Shimizu, Yuta Takahashi, Shusuke Okita, Raul Ramirez, Alexandra Hughlett, Toshihiro Kameda, and JR Dennison; Fall 2016 Joint Meeting of the Four Corner and Texas Sections of the American Physical Society

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Relaxation of Radiation Effects on the Optical Transmission of Polymers, Alexandra Hughlett, Tyler Kippen, and J. R. Dennison; American Physical Society Four Corner Section Meeting

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Temperature Dependency of Electrostatic Breakdown in LDPE and PEEK, Tyler Kippen, Allen Andersen, and JR Dennison; Fall 2016 Joint Meeting of the Four Corner and Texas Sections of the American Physical Society

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Dependence of Electrostatic Field Strength on Voltage Ramp Rate for Spacecraft Materials, Krysta Moser, Allen Andersen, and JR Dennison; 14th Spacecraft Charging Technology Conference

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Effects of Voltage Ramp Rates on Electrostatic Field Strength in Highly Disordered Insulating Materials, Krysta Moser, Allen Andersen, and JR Dennison; Utah State University Student Research Symposium

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PEA System Modeling and Signal Processing for Measurements of Volume Charge Distributions in Thin Dielectric Films, Lee H. Pearson, JR Dennison, Erick W. Griffiths, and A. C. Pearson; 14th Spacecraft Charging Technology Conference

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Predictive Formula for Electron Range over a Large Span of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, and JR Dennison; 14th Spacecraft Charging Technology Conference

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Developing a Safe Test System for High-energy Electron Flux Environments Testing, Heather Tippets; Research and Creative Works Conference

2015

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The Space Survivability Test Chamber, Katie Gamaunt, Heather Tippets, Alex Souvall, Ben Russon, and JR Dennison; American Physical Society Four Corner Section Meeting

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Density of State Models of Steady-State Temperature Dependent Radiation Induced Conductivity, Jodie Corbridge Gillespie and JR Dennison; American Physical Society Four Corner Section Meeting

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Dependence of Electrostatic Field Strength on Voltage Ramp Rates for Spacecraft Material, Krysta Moser, Allen Andersen, and JR Dennison; American Physical Society Four Corner Section Meeting

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Measurement of Effects of Long Term Ionizing Radiation on High Efficiency Solar Arrays, Ben Russon, Heather Tippets, Gregory Wilson, Katie Gamaunt, Alex Souvall, and JR Dennison; American Physical Society Four Corner Section Meeting

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Properties of Spacecraft Materials Exposed to Ionizing Radiation, Alex Souvall, Gregory Wilson, Katie Gamaunt, Ben Russon, Heather Tippets, and JR Dennison; American Physical Society Four Corner Section Meeting

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Electron Penetration Range for Diverse Materials, Anne C. Starley, Lisa M. Phillipps, and JR Dennison; Utah State University Student Research Symposium (2015)

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Predictive Formula for Electron Range over a Large Span of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, and JR Dennison; American Physical Society Four Corner Section Meeting

2014

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A Dual-defect Model for Predicting Lifetimes for Polymeric Discharges from Accelerated Testing, Allen Andersen and JR Dennison; American Physical Society Four Corner Section Meeting

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

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Methods to Decrease Error in Conductivity Measurements of Highly Disordered Materials, Phil Lundgreen, Justin Dekany, and JR Dennison; Presented at Utah Council for Undergraduate Research, February 28, 2014

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Cathodoluminescence Events Coincident with Muon Detection, Kenneth Zia, Justin Dekany, and JR Dennison; American Physical Society Four Corner Section Meeting

2013

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Electric Multipole Interactions in an Extended BEG Model, Teresa Burns and JR Dennison; American Physical Society March Meeting 2013

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

Comparison of Radiation Induced Conductivities at Low Temperature, JR Dennison, Greg Wilson, Ryan Hoffmann, and Amberly Evans; American Physical Society March Meeting 2013

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Nanodielectric Properties of High Conductivity Carbon-Loaded Polyimide Under Electron-Beam Irradiation, Amberly Evans, J. R. Dennison, Gregory Wilson, and Justin Dekany; IEEE International Conference on Solid Dielectrics

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Faraday Cup Designs for High Efficiency Determination of Energy- and Angular-Resolved Charged Particle Fluxes, Kent D. Hartley; Utah Council for Undergraduate Research; Utah State University; February 22, 2013

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Simulation Chamber for Space Environment Survivability Testing, Robert H. Johnson and Lisa D. Montierth; USU Student Showcase; Logan, Utah; 2013

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Time Dependent Conductivity of Low Density Polyethylene, Phillip Lundgreen, Justin Dekany, and JR Dennison; Fall 2013 Meeting of the Four Corner Section of the American Physical Society, University of Denver Denver, CO October 18-19, 2013

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Atomic Oxygen Modification of the Nanodielectric Surface Composition of Carbon-Loaded Polyimide Composites, Kelby T. Peterson and JR Dennison; Fall 2013 Meeting of the Four Corner Section of the American Physical Society

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Simulation of UV Radiation Degradation of Polymers on MISSE-6 in the Low Earth Orbit Environment, Kelby T. Peterson and JR Dennison; Posters on the Hill; Salt Lake City; 2013

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Electron Penetration Ranges as a Function of Effective Number of Valence Electrons, Teancum Quist, Blake Moore, Greg Wilson, and JR Dennison; Utah State University Student Showcase, Logan UT

2012

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Electrostatic Discharge Properties of Fused Silica Coatings, Allen Andersen, Charles Sim, and JR Dennison; APS 4-Corners Section Regional Meeting; Socorro, NM; 2012

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Muon Contribution to Cathodoluminescence Tests?, Justin Dekany, Allen Anderson, and JR Dennison; American Physical Society Four Corner Section Meeting

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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; 12th Spacecraft Charging Technology Conference; 13-18 May 2012 Kitakyushu, Japan

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Electron Transport Models and Precision Measurements in a Constant Voltage Chamber, Justin Dekany, Alec Sim, Jerilyn Brunson, and JR Dennison; 12th Spacecraft Charging Technology Conference; 13-18 May 2012 Kitakyushu, Japan

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The Dynamic Interplay Between Spacecraft Charging, Space Environment Interactions and Evolving Materials, JR Dennison; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan

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Electron Beam Induced Luminescence of SiO2 Optical Coatings, JR Dennison, Amberly Evans, Gregory Wilson, Justin Dekany, Charles W. Bowers, and Robert Meloy; Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) 2012 Annual Report

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Electron Induced Charging and Arcing of Multilayered Dielectric Materials, JR Dennison, Gregory Wilson, Amberly Evans, and Justin Dekany; 3rd International Workshop on Mechanisms of Vacuum Arcs (MeVArc 2012)

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Low Temperature Cathodoluminescence of Space Observatory Materials, Amberly Evans, Gregory Wilson, Justin Dekany, Alec Sim, and JR Dennison; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan

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Low Temperature Cathodoluminescence in Disordered SiO2, Amberly Evans, Gregory Wilson, and JR Dennison; National Conference on Undergraduate Research; Weber State University Spring, 2012

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In Situ Surface Voltage Measurements of Dielectrics Under Electron Beam Irradiation, Joshua L. Hodges, Alec Sim, Justin Dekany, Gregory Wilson, Amberly Evans, and JR Dennison; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan

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Small Scale Simulation Chamber for Space Environment Survivability Testing, Robert H. Johnson, Lisa D. Montierth, JR Dennison, James S. Dyer, and Alex Chanson; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan

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The Effects of Space Environment on Wireless Communication Devices' Performance, Hillyard Landon and JR Dennison; US Student Showcase 2012, Utah State University, Logan, UT

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Simulation Chamber for Space Environment Survivability Testing, Lisa D. Montierth and Robert H. Johnson; National Conference on Undergraduate Research; Weber State University Spring, 2012

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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 Conference on Undergraduate Research; Weber State University Spring, 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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Defect-Driven Dynamic Model of Electrostatic Discharge and Endurance Time Measurements of Polymeric Spacecraft Materials, Charles Sim, Alec Sim, JR Dennison, and Matthew Stormo

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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 14-18 May, 2012 Kitakyushu Japan

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Histological Analysis of Biological Tissues Using High-Frequency Ultrasound, Kristina Sorensen, Timothy Doyle, Brett D. Boret, Monica Cervantes, J. Andrew Chappell, Bradley J. Curtis, Matthew A. Grover, Janeese E. Stiles, and Laurel A. Thompson; 164th Meeting of the Acoustical Society of America Kansas City, Missouri 22 - 26 October 2012

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Charging Effects of Multilayered Dielectric Spacecraft Materials: Surface Voltage, Discharge and Arcing, Gregory Wilson, Amberly Evans, Justin Dekany, and JR Dennison; 12th Spacecraft Charging Technology Conference 14-18 May, 2012 Kitakyushu Japan