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Articles 1 - 17 of 17

Full-Text Articles in Plasma and Beam Physics

Generation Of Non-Maxwell-Boltzmann Energy Distributions During Thermalization Of Interacting Baths, Roberto Onofrio, Bala Sundaram Jun 2025

Generation Of Non-Maxwell-Boltzmann Energy Distributions During Thermalization Of Interacting Baths, Roberto Onofrio, Bala Sundaram

Data and Datasets

data associated with all the figures in the publication.


Particle-In-Cell Coupled With Monte-Carlo Collisions And External Circuitry For Low Temperature Plasma Reactors, Richard Lombardini Apr 2025

Particle-In-Cell Coupled With Monte-Carlo Collisions And External Circuitry For Low Temperature Plasma Reactors, Richard Lombardini

Presentations - 2025

Low-temperature plasma reactors used for chip fabrication involve complex physical processes that affect the quality of pattern transfer on the semiconductor substrate. Detailed investigations of the near-surface plasma environment require fully-kinetic approaches. We use a particle-in-cell/Monte Carlo collision (PIC/MCC) approach coupled with external circuitry to model realistic operating conditions capture the kinetic effects and measure ion energy and angle distribution functions. We build on the exascale-capable PIC/MCC code, WarpX, and leverage Python interfaces to couple external circuitry. In this talk, we will demonstrate this inexpensive, non-iterative coupled strategy using a two-dimensional Gaseous Electronics Conference reference cell.


A Simple And Low-Cost Method For Generating Short Laser Pulses, Daniel Fisher Nov 2024

A Simple And Low-Cost Method For Generating Short Laser Pulses, Daniel Fisher

Undergraduate Research Symposium Posters

A simple, portable method is described and demonstrated for generating short optical pulses (~ 1 μsec) from a continuous wave (CW) source using a rotating pinhole. A CW 633nm HeNe beam was focused onto a 225 μm diameter stainless steel pinhole, which was rotated up to 1000 Hz using an optical chopper wheel. The pulsed light was then focused onto a silicon photodetector and read by an oscilloscope. This novel setup aims to bridge the gap between pulsed laser performance and price for wide application in spectroscopy methods, industrial laser peening, and medical treatments. This will be the first publication …


Lattice Optics Optimization For Recirculatory Energy Recovery Linacs With Multi-Objective Optimization, Isurumali Neththikumara, Todd Satogata, Alex Bogacz, Ryan Bodenstein, Arthur Vandenhoeke Apr 2022

Lattice Optics Optimization For Recirculatory Energy Recovery Linacs With Multi-Objective Optimization, Isurumali Neththikumara, Todd Satogata, Alex Bogacz, Ryan Bodenstein, Arthur Vandenhoeke

College of Sciences Posters

Beamline optics design for recirculatory linear accelerators requires special attention to suppress beam instabilities arising due to collective effects. The impact of these collective effects becomes more pronounced with the addition of energy recovery (ER) capability. Jefferson Lab’s multi-pass, multi-GeV ER proposal for the CEBAF accelerator, ER@CEBAF, is a 10- pass ER demonstration with low beam current. Tighter control of the beam parameters at lower energies is necessary to avoid beam break-up (BBU) instabilities, even with a small beam current. Optics optimizations require balancing both beta excursions at high-energy passes and overfocusing at low-energy passes. Here, we discuss an optics …


Magnetic Field Perturbation Of Plasma Striations, Aidan Miller Jan 2021

Magnetic Field Perturbation Of Plasma Striations, Aidan Miller

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Construction And Testing Of The Terrestrial Rays Analysis And Detection (Tryad) Science Instrument, Jaiden Stark Jan 2021

Construction And Testing Of The Terrestrial Rays Analysis And Detection (Tryad) Science Instrument, Jaiden Stark

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Three-Dimensional Measurement Of Electron Temperature And Density In A Split Ring Resonator Microplasma, Neil Laya Jan 2020

Three-Dimensional Measurement Of Electron Temperature And Density In A Split Ring Resonator Microplasma, Neil Laya

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Classifying Aurora Borealis: From Human Eyes To Machine Vision, Caleb Dowell Jan 2020

Classifying Aurora Borealis: From Human Eyes To Machine Vision, Caleb Dowell

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Building Miniature-Sized Ion Thruster Using Split Ring Resonator (Srr), Toyofumi Yamaguchi Jan 2017

Building Miniature-Sized Ion Thruster Using Split Ring Resonator (Srr), Toyofumi Yamaguchi

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


The Subject Librarian Newsletter, Creol, Spring 2016, Patti Mccall Mar 2016

The Subject Librarian Newsletter, Creol, Spring 2016, Patti Mccall

Libraries' Newsletters

No abstract provided.


Combining Diffusive Shock Acceleration And Stochastic Particle Energization By Multiple Plasmoids, Parisa Mostafavi Oct 2015

Combining Diffusive Shock Acceleration And Stochastic Particle Energization By Multiple Plasmoids, Parisa Mostafavi

Von Braun Symposium Student Posters

No abstract provided.


Lightning-Based Search For Tgfs In The Fermi Gamma-Ray Burst Monitor, Kareem Omar Jan 2015

Lightning-Based Search For Tgfs In The Fermi Gamma-Ray Burst Monitor, Kareem Omar

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Characterizing The Tgt-Lightning Relationship Using Entln, Kareem Omar Jan 2014

Characterizing The Tgt-Lightning Relationship Using Entln, Kareem Omar

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Magnetic Field Mapping In The Plasmoid Thruster Experiment (Ptx), Coby W. Mccolgin Oct 2011

Magnetic Field Mapping In The Plasmoid Thruster Experiment (Ptx), Coby W. Mccolgin

Von Braun Symposium Student Posters

No abstract provided.


Plasma Jet Magneto Inertial Fusion Thruster Concept, Richard Hatcher Oct 2011

Plasma Jet Magneto Inertial Fusion Thruster Concept, Richard Hatcher

Von Braun Symposium Student Posters

No abstract provided.


Beamed Energy For Ablative Propulsion In Near Earth Space, Grant Bergstue Oct 2011

Beamed Energy For Ablative Propulsion In Near Earth Space, Grant Bergstue

Von Braun Symposium Student Posters

No abstract provided.


3d Heliospheric Simulations Of Heavy Neutral Particles From The Interstellar Medium, Akito Kawamura Oct 2010

3d Heliospheric Simulations Of Heavy Neutral Particles From The Interstellar Medium, Akito Kawamura

Von Braun Symposium Student Posters

No abstract provided.