44 citations · 144 across the 20 of their papers we have counts for
20 papers
Spacecraft heat shield study in the DIII-D tokamak
Dmitri M. Orlov, Evdokiya G. Kostadinova, Igor Bykov +33
We report a new experimental platform developed at the DIII-D National Fusion Facility to investigate carbon ablation and spallation under extreme heat fluxes relevant to fusion pl…
Ion wake-mediated dust interactions under PK-4 conditions: a generalized and compact potential formulation
Diana Jimenez Marti, Benny Rodriguez Saenz, Peter Hartmann +3
Dusty plasmas, composed of electrons, ions, neutral particles, and charged dust grains, exhibit self-organization phenomena such as string-like structures observed in microgravity…
Sparse identification of effective microparticle interaction potential in dusty plasma from simulation data
Zachary Brooks Howe, Lorin Swint Matthews, Truell Hyde +2
Identification of the particle interaction potential is a challenging and important task in dusty plasma, colloids, and smart materials as it allows the characterization of structu…
Effect of Controlled Magnetic Island Bifurcation on Electron Diffusion
Jessica Eskew, D. M. Orlov, B. Andrew +7
Magnetic islands strongly influence cross-field electron transport in magnetized plasmas. In particular, bifurcations of the island topology modify the number and location of O-poi…
Anisotropic anomalous diffusion and nonequilibrium in microgravity dusty plasma. Part Two: Spectral Analysis
Bradley R. Andrew, Luca Guazzotto, Lorin S. Matthews +2
Anisotropic anomalous dust diffusion in microgravity dusty plasma is investigated using experimental data from the Plasmakristall-4 (PK-4) facility on board the International Space…
Structural States of Filamentary Microgravity Dusty Plasma
Emerson Gehr, Abigail Terrell, Katrina Vermillion +7
This study investigates the filamentary structural states of microgravity dusty plasma using data from the Plasmakristall-4 (PK-4) facility on board the International Space Station…
Accelerating the Fusion Workforce
Carlos Paz-Soldan, Eva Belonohy, Troy Carter +11
The fusion energy research and development landscape has seen significant advances in recent years, with important scientific and technological breakthroughs and a rapid rise of in…
Experiments and modeling of dust particle heating resulting from changes in polarity switching in the PK-4 microgravity laboratory
Lori S. McCabe, Jeremiah Williams, Saikat Chakraborty Thakur +6
In the presence of gravity, the micron-sized charged dust particles in a complex (dusty) plasma are compressed into thin layers. However, under the microgravity conditions of the P…
Meteoroid Ablation within the Jovian Atmosphere: Implications on the Oxygen Delivery to the Gas Giant's Atmosphere
C. A. Mehta, D. M. Orlov, T. Feng +2
The detection of water molecules within the atmosphere of Jupiter, first by the Galileo Atmospheric Probe, and later by the Juno spacecraft, has given rise to the question of wheth…
Anisotropic anomalous diffusion in microgravity dusty plasma. Part One: Nonextensive Statistical Analysis
Bradley R. Andrew, Luca Guazzotto, Lorin Matthews +2
Anisotropic anomalous dust diffusion in microgravity dusty plasma is investigated using experimental data from the Plasmakristall-4 (PK-4) facility on board the International Space…
Ion density waves driving the formation of filamentary dust structures
A. Mendoza, D. Jiménez Martí, L. S. Matthews +5
The PlasmaKristall-4 experiment on the International Space Station allows for the study of the 3-dimensional interaction between plasma and dust particles. Previous simulations of…
Vortex merging in strongly coupled dusty plasmas using a visco-elastic fluid model
Vikram Dharodi, Evdokiya Kostadinova
This work is a numerical study of the two-dimensional merging phenomena between two Lamb-Oseen co-rotating vortices in a viscoelastic fluid. We use a generalized hydrodynamics flui…
Workforce Development Through Research-Based, Plasma-Focused Activities
E G Kostadinova, Shannon Greco, Maajida Murdock +18
This report is a summary of the mini-conference Workforce Development Through Research-Based, Plasma-Focused Science Education and Public Engagement held during the 2022 American P…
Ring structural transitions in strongly coupled dusty plasmas
Vikram Dharodi, Evdokiya Kostadinova
This paper presents a numerical study of ring structural transitions in strongly coupled dusty plasma confined in a ring-shaped (quartic) potential well with a central barrier, who…
Influence of Temporal Variations in Plasma Conditions on the Electric Potential Near Self-Organized Dust Chains
Katrina Vermillion, Dustin L. Sanford, Lorin S. Matthews +13
The self-organization of dust grains into stable filamentary dust structures (or "chains") largely depends on dynamic interactions between the individual charged dust grains and th…
Design and Testing of Dimes Carbon Ablation Rods in the DIII-D Tokamak
Dmitri M. Orlov, Michael O. Hanson, Jason Escalera +7
We present the design of ATJ graphite rods developed for ablation experiments under high heat flux (up to 50 MW/m2) in the lower divertor of the DIII-D tokamak [1], a magnetic plas…
Fractional Laplacian Spectral Approach to Turbulence in a Dusty Plasma Monolayer
Evdokiya G Kostadinova, Rahul Banka, Joshua L Padgett +3
This work presents an analytical investigation of anomalous diffusion and turbulence in a dusty plasma monolayer, where energy transport across scales leads to the spontaneous form…
A series representation of the discrete fractional Laplace operator of arbitrary order
Tiffany Frugé Jones, Evdokiya Georgieva Kostadinova, Joshua Lee Padgett +1
Although fractional powers of non-negative operators have received much attention in recent years, there is still little known about their behavior if real-valued exponents are gre…
Dust charging in dynamic ion wakes
Lorin Swint Matthews, Dustin L. Sanford, Evdokiya Kostadinova +3
Micron-sized dust grains have been successfully employed as non-perturbative probes to measure variations in plasma conditions on small spatial scales, such as those found in plasm…
Self-diffusion in two-dimensional quasi-magnetized rotating dusty plasmas
Peter Hartmann, Jorge C. Reyes, Evdokiya G. Kostadinova +10
The self-diffusion phenomenon in a two-dimensional dusty plasma at extremely strong (effective) magnetic fields is studied experimentally and by means of molecular dynamics simulat…