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- Spacecraft charging (10)
- Polymers (7)
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- Electron emission (5)
- Materials testing (5)
- Arcing (4)
- Breakdown (4)
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- Dielectric breakdown (3)
- Dielectrics (3)
- Electron scattering (3)
- Light emission (3)
- Muscle cells (3)
- Radiation (3)
- 3D modeling (2)
- Aerospace materials (2)
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- Annealing (2)
- Carbon nanotube (2)
- Carbosurf+ (2)
- Ceramics (2)
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- Conductivity (2)
- Deep charging (2)
- ESD (2)
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Articles 61 - 90 of 296
Full-Text Articles in Physics
Time-Evolved Constant Voltage Conductivity Measurements Of Common Spaceborne Polymeric Materials, Brian Wood, David King, Jr Dennison
Time-Evolved Constant Voltage Conductivity Measurements Of Common Spaceborne Polymeric Materials, Brian Wood, David King, Jr Dennison
Journal Articles
No abstract provided.
Electron Yield Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Electron Yield Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Presentations
No abstract provided.
Simulating Muscle Atrophy Due To Microgravity And Ionizing Radiation, Lori Caldwell, Eryn Hanson, Alexandra H. Nelson, Charles Harding, Jr Dennison, Elizabeth Vargis
Simulating Muscle Atrophy Due To Microgravity And Ionizing Radiation, Lori Caldwell, Eryn Hanson, Alexandra H. Nelson, Charles Harding, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
Electron Yield Properties Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Electron Yield Properties Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Presentations
No abstract provided.
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Jr Dennison, Anne C. Starley
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Jr Dennison, Anne C. Starley
Conference Proceedings
No abstract provided.
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Jr Dennison, Phil Lundgreen, Justin Christensen
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Jr Dennison, Phil Lundgreen, Justin Christensen
Posters
No abstract provided.
Using Quantile-Quantile Plots To Compare Experimental Apples And Oranges In Physics Labs, Allen Andersen, Jr Dennison
Using Quantile-Quantile Plots To Compare Experimental Apples And Oranges In Physics Labs, Allen Andersen, Jr Dennison
Posters
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
Wireless intra-spacecraft communication systems are being developed due to their potential for weight-saving and design flexibility compared to wired systems [1,2]. Such systems are essentially an on-board Wi-Fi network allowing various spacecraft systems to communicate wirelessly.
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Justin Christensen, Phil Lundgreen, Jr Dennison
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Justin Christensen, Phil Lundgreen, Jr Dennison
Posters
No abstract provided.
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
Time-Evolved Constant Voltage Conductivity Polymeric Materials, Brian Wood, Jr Dennison, David King
Time-Evolved Constant Voltage Conductivity Polymeric Materials, Brian Wood, Jr Dennison, David King
Conference Proceedings
No abstract provided.
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Conference Proceedings
No abstract provided.
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T. -C. Shen, Jr Dennison
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T. -C. Shen, Jr Dennison
Conference Proceedings
No abstract provided.
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Conference Proceedings
No abstract provided.
A Predictive Range Expression: Applications And Limitations, Gregory Wilson, Anne C. Starley, Lisa Phillipps, Jr Dennison
A Predictive Range Expression: Applications And Limitations, Gregory Wilson, Anne C. Starley, Lisa Phillipps, Jr Dennison
Journal Articles
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
Wireless intra-spacecraft communication systems are being developed due to their potential for weight-saving and design flexibility compared to wired systems. Such systems are essentially an on-board Wi-Fi network allowing various spacecraft systems to communicate wirelessly.
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Posters
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
No abstract provided.
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T C. Shen, Jr Dennison
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T C. Shen, Jr Dennison
Posters
No abstract provided.
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison
Posters
No abstract provided.
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Presentations
No abstract provided.
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Elizabeth Vargis, Charles Harding, Jr Dennison
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Elizabeth Vargis, Charles Harding, Jr Dennison
Posters
One of the primary concerns for those spending time in low gravity and high radiation environments is muscle atrophy. A major cause of muscular atrophy is oxidative stress which is amplified by increased levels of ionizing radiation during spaceflight. Additionally, high levels of radiation can damage DNA, increasing the risk of cancer. Utah State University’s Space Environment Test Facility was used to irradiate C2C12 myoblasts and human vascular endothelial cells with a beta-radiation dosage mimicking that on the International Space Station and a 3-year deep space mission.
Electron Yield Of A Carbon-Composite Nanodielectric, Matthew Robertson, Justin Christensen, Greg Wilson, Jr Dennison
Electron Yield Of A Carbon-Composite Nanodielectric, Matthew Robertson, Justin Christensen, Greg Wilson, Jr Dennison
Posters
No abstract provided.
Temperature Dependence Of Electrostatic Discharge In Highly Disordered Polymers, Tyler Kippen, Allen Andersen, Jr Dennison
Temperature Dependence Of Electrostatic Discharge In Highly Disordered Polymers, Tyler Kippen, Allen Andersen, Jr Dennison
Posters
No abstract provided.
Pulsed Electro-Acoustic Measurements Of Charging And Relaxation In Low Density Polyethylene, Zachary Gibson
Pulsed Electro-Acoustic Measurements Of Charging And Relaxation In Low Density Polyethylene, Zachary Gibson
Presentations
No abstract provided.
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Jr Dennison, Elizabeth Vargis
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Jr Dennison, Elizabeth Vargis
Posters
As longer space missions become more desirable to public and private institutions, the physiological impact on astronauts must be considered. One of the primary concerns for those spending time in low gravity and high radiation environments is muscle atrophy. A major cause of muscular atrophy is oxidative stress which is amplified by increased levels of ionizing radiation during spaceflight. Additionally, high levels of radiation can damage DNA, increasing the risk of cancer. Utah State University’s Space Environment Test Facility was used to irradiate C2C12 myoblasts and human vascular endothelial cells with a dosage mimicking that on the International Space Station …
Electron Yield Of Challenging Materials: Low Density Polyethylene And Carbon-Composite Nanodielectrics, Matthew Robertson, Jordan Lee, Jr Dennison
Electron Yield Of Challenging Materials: Low Density Polyethylene And Carbon-Composite Nanodielectrics, Matthew Robertson, Jordan Lee, Jr Dennison
Presentations
The electron yield—the ratio of the number of emitted electrons to incident electrons—is a key material property that characterizes how materials will charge due to exposure to electron fluxes. The USU Materials Physics Group has developed expertise in measuring this for a wide array of conductors, semiconductors and insulators, including many challenging materials. The basic definitions associated with electron yield and how they are measured will be discussed. We will highlight many critical applications investigated at USU, particularly those associated with spacecraft charging as materials interact with space plasma environments. Electron irradiation experiments conducted to investigate the electron transport, charging, …
Electron Yield Of Challenging Materials: Low Density Polyethylene And Carbon-Composite Nanodielectrics, Matthew Robertson, Jordan Lee, Jr Dennison
Electron Yield Of Challenging Materials: Low Density Polyethylene And Carbon-Composite Nanodielectrics, Matthew Robertson, Jordan Lee, Jr Dennison
Presentations
No abstract provided.
Highly Accelerated Test Method For Characterizing Likelihood Of Breakdown In Hvdc Dielectric Materials, Allen Andersen, Jr Dennison
Highly Accelerated Test Method For Characterizing Likelihood Of Breakdown In Hvdc Dielectric Materials, Allen Andersen, Jr Dennison
Journal Articles
Increasing application and development of HVDC technologies emphasizes the need for improved characterization of candidate insulating materials. Accurately predicting the lifetime to breakdown of dielectric materials by means of accelerated voltage step-up to breakdown tests can be prohibitively time consuming. Step-up to breakdown tests with sufficiently slow voltage ramp rates that continuously monitor leakage current have detected a distribution of DC partial discharge (DCPD) events occurring prior to breakdown, which increase with increasing field. These DCPD distributions are shown to correlate strongly with the likelihood of breakdown for four common polymers. Given that hundreds of DCPD events are typically observed …