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Pea System Modeling And Signal Processing For Measurement Of Volume Charge Distributions In Thin Dielectric Films, L. H. Pearson, JR Dennison, Erick W. Griffiths, A. C. Pearson 2017 Utah State University

Pea System Modeling And Signal Processing For Measurement Of Volume Charge Distributions In Thin Dielectric Films, L. H. Pearson, Jr Dennison, Erick W. Griffiths, A. C. Pearson

Journal Articles

This paper discusses our effort to develop advanced pulsed electroacoustic (PEA) measurement system capabilities that incorporate (1) improved signal processing tools for increased signal/noise ratios; and (2) integrated PEA modeling tools. In addition, we emphasize state-of-the-art system electronic components, integrated environmental controls, and sensor improvements required to achieve high spatial resolution while maintaining reasonable temporal resolution for both ambient and in vacuo measurements of thin dielectrics charged using electron beam injection, which is most applicable for spacecraft charging tests. PEA measurement systems provide an important tool to investigate the spatial extent and dynamic evolution of embedded charge distributions in ...


Temporal And Spatial Correlations In Electron-Induced Arcs Of Adjacent Dielectric Islands, Justin Christensen, JR Dennison, Justin Dekany 2017 Utah State University

Temporal And Spatial Correlations In Electron-Induced Arcs Of Adjacent Dielectric Islands, Justin Christensen, Jr Dennison, Justin Dekany

Journal Articles

This study investigates very short duration (


Foundations Of Wave Phenomena: Complete Version, Charles G. Torre 2016 Department of Physics, Utah State University

Foundations Of Wave Phenomena: Complete Version, Charles G. Torre

Foundations of Wave Phenomena

This is the complete version of Foundations of Wave Phenomena. Version 8.2.


Please click here to explore the components of this work.


Cavity Ringdown Spectroscopy In Nitrogen/Oxygen Mixtures In The Presence Of Alpha Radiation, Sidney John Gautrau 2016 University of Southern Mississippi

Cavity Ringdown Spectroscopy In Nitrogen/Oxygen Mixtures In The Presence Of Alpha Radiation, Sidney John Gautrau

Master's Theses

This research was part of an effort to experimentally validate computational models under development for radiation-induced atmospheric effects. Cavity Ringdown Spectroscopy (CRDS) was used to measure the concentration of chemical products generated as a result of radiation interactions in a controlled atmosphere. Experiments were conducted in a vacuum chamber interfaced with a gas introduction system that controlled the initial atmospheric composition. A quadrupole mass spectrometer and tunable dye laser were integrated to confirm initial atmospheric composition, and provide wavelength flexibility for detecting a variety of chemical products generated by radiation interactions. CRDS measurements were made for ozone production resulting from ...


Elasticity Of Cylindrical Black Holes, Conrad Pearson 2016 California Polytechnic State University, San Luis Obispo

Elasticity Of Cylindrical Black Holes, Conrad Pearson

Physics

Black holes are regions of strong gravity, and are often regarded as behaving like drops of fluid. When this line of thought is applied to cylindrical black holes (black cylinders), a mapping can be made between known instabilities for black cylinders and ordinary fluid cylinders. However, this known correlation is increasingly less accurate for lower spatial dimensions, and I seek to correct this discrepancy in this thesis. By considering soft solids instead of pure fluids, elastic energy can be included, which brings us closer to a direct comparison. In improving this mapping, it becomes possible to better understand the behavior ...


Electrical Properties Of Annealed And Coated Boron Nitride Under Electron Beam Irradiation, Kevin Guerch, Theirry Paulmier, JR Dennison, Justin Dekany, Pascal Lenormand, Sophie Guillemet-Fritsch 2016 ONERA, The French Aerospace Lab

Electrical Properties Of Annealed And Coated Boron Nitride Under Electron Beam Irradiation, Kevin Guerch, Theirry Paulmier, Jr Dennison, Justin Dekany, Pascal Lenormand, Sophie Guillemet-Fritsch

Journal Articles

The charging and relaxation kinetics of pyrolytic boron nitride (BN) substrates, BN with an aluminum oxide (BN/Al2O3) coating, and thermally-annealed alumina-coated boron nitride (an–BN/Al2O3) were investigated under low power electron irradiation (5 < incident energy E0 < 20 keV and incident flux Ji = 10 nA cm-2 at room temperature) in the CEDRE facility at ONERA (Toulouse, France). Surface potentials of each ceramics configuration were measured over time using the Kelvin probe method. The influence of coating and annealing treatments to limit charging is discussed in this paper. A thorough study of a an BN/Al2O3 sample was carried out under a critical electron flux (E0 = 20 keV and Ji = 750 nA cm-2) in order to assess the degradation kinetics of the material’s electrical properties. The characterizations of an–BN/Al2O3 samples were performed before and after electrical aging at CIRIMAT (Toulouse, France) to identify the structural and chemical evolution which would explain this degradation. A chemical deterioration of coating and some contaminants were observed after the critical irradiation.


Jaguar Sun, Anya Nadal 2016 Claremont Colleges

Jaguar Sun, Anya Nadal

The STEAM Journal

Cymatics, is derived from a Greek word, meaning "wave", is a subset of modal vibrational phenomena. The term was coined by Hans Jenny, a Swiss follower of the philosophical school known as anthroposophy. This is a visual representation of the frequency field. I created this piece from acrylic on canvas based on the subtle energies I can see and feel.


The Art And Science Of Light Painting, Reid Godshaw 2016 Claremont Colleges

The Art And Science Of Light Painting, Reid Godshaw

The STEAM Journal

A short overview of the making of light painting portraits explained by the artist.


Foundations Of Wave Phenomena, Charles G. Torre 2016 Department of Physics, Utah State University

Foundations Of Wave Phenomena, Charles G. Torre

Charles G. Torre

This is an undergraduate text on the mathematical foundations of wave phenomena. Version 8.2.


Letter From The Editor - Hirst, Kristin England 2016 Institute for Nuclear Security

Letter From The Editor - Hirst, Kristin England

International Journal of Nuclear Security

No abstract provided.


The Capacity-Building Support Activities Of The Integrated Support Center For Nuclear Nonproliferation And Nuclear Security Of The Japan Atomic Energy Agency, Yosuke Naoi, Kalman A. Robertson, Naoko Noro 2016 Integrated Support Center for Nuclear Nonproliferation and Nuclear Security, Japan Atomic Energy Agency

The Capacity-Building Support Activities Of The Integrated Support Center For Nuclear Nonproliferation And Nuclear Security Of The Japan Atomic Energy Agency, Yosuke Naoi, Kalman A. Robertson, Naoko Noro

International Journal of Nuclear Security

International cooperation is essential to support states in building the human resources necessary for maintaining and strengthening nuclear security. As the nation’s only comprehensive nuclear research and development institute, the Japan Atomic Energy Agency (JAEA) has long-standing experience developing and operating nuclear technology in all steps of the fuel cycle. The Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) was established within the JAEA in December 2010 as Japan’s Center of Excellence for nuclear security. The ISCN provides assistance with capacity building to states throughout Asia and some other regions. The objective of this article is ...


Call For Submission, Kristin England 2016 Institute for Nuclear Security

Call For Submission, Kristin England

International Journal of Nuclear Security

No abstract provided.


Ijns Masthead, Kristin England 2016 Institute for Nuclear Security

Ijns Masthead, Kristin England

International Journal of Nuclear Security

No abstract provided.


Letter From The Editor - Choe, Kristin England 2016 Institute for Nuclear Security

Letter From The Editor - Choe, Kristin England

International Journal of Nuclear Security

No abstract provided.


Letter From The Editor - Frahi-Amroun, Kristin England 2016 Institute for Nuclear Security

Letter From The Editor - Frahi-Amroun, Kristin England

International Journal of Nuclear Security

No abstract provided.


Call For The Student Writing Competition, Kristin England 2016 Institute for Nuclear Security

Call For The Student Writing Competition, Kristin England

International Journal of Nuclear Security

No abstract provided.


Table Of Contents, Kristin England 2016 Institute for Nuclear Security

Table Of Contents, Kristin England

International Journal of Nuclear Security

No abstract provided.


Security Culture And Its Self-Assessment As Supplementary Tools For Nuclear Security Training, Igor Khripunov, Sara Z. Kutchesfahani, Khairul -. Khairul - 2016 University of Georgia

Security Culture And Its Self-Assessment As Supplementary Tools For Nuclear Security Training, Igor Khripunov, Sara Z. Kutchesfahani, Khairul -. Khairul -

International Journal of Nuclear Security

Security Culture and its Self-Assessment as Supplementary Tools for Nuclear Security Training

Igor Khripunov, PhD

Center for International Trade and Security, University of Georgia (USA)

Sara Z. Kutchesfahani, PhD

Center for International Trade and Security, University of Georgia (USA)

Khairul Khairul

National Nuclear Energy Agency of Indonesia (BATAN)

Abstract

Nuclear security culture – an emerging and widely recognized practice – serves as a means to support and enhance nuclear security. In fact, many International Atomic Energy Agency (IAEA) publications and the Nuclear Security Summits have highlighted the vital role of nuclear security culture and raised its status to the same level as ...


Khalifa University Reachback Program Supporting Prevention Of Illicit Nuclear And Radiological Material Smuggling In The United Arab Emirates, Braden Goddard, Alexander A. Solodov, Patrick J. Simmons 2016 Virginia Commonwealth University

Khalifa University Reachback Program Supporting Prevention Of Illicit Nuclear And Radiological Material Smuggling In The United Arab Emirates, Braden Goddard, Alexander A. Solodov, Patrick J. Simmons

International Journal of Nuclear Security

Trafficking of Illicit nuclear or radiological materials is a global threat which can involve and adversely affect any country. Ultimately, it is the responsibility of each state to prevent and combat illicit nuclear trafficking by screening all cargo and travelers entering, exiting, and transiting through its borders. As a part of the national radiation detection infrastructure of the United Arab Emirates (UAE), a reachback program was established at Khalifa University (KU) to provide capabilities for adjudication of radiation alarms at Khalifa Port and other radiation portal monitor (RPM) locations. In addition to the main mission, KU Reachback aims to educate ...


Status Of Nuclear Security Education And Research In Bangladesh And Looking Forward, Md. Shafiqul Islam, Md. Mobasher Ahmed 2016 University of Dhaka

Status Of Nuclear Security Education And Research In Bangladesh And Looking Forward, Md. Shafiqul Islam, Md. Mobasher Ahmed

International Journal of Nuclear Security

Bangladesh uses category I of nuclear materials and category 1-5 of radioactive materials in the field of research, medical and industries. The Government is going to implement its first nuclear power plant under an IGA between the Bangladesh and Russian Governments. With the emerging global nuclear and radiological terrorism by potential adversaries, enhancing nuclear security is the paramount importance for the country. The paper has found no established communication channels among stakeholders in order to work in a coordinated and collaborative manner for strengthening the nuclear security. This has resulted lacking importance of education, research, training and knowledge management initiatives ...


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