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Activities

Employment (2)

Tri Alpha Energy (United States): Rancho Santa Margarita, California, US

2022-08-29 to present | Scientist (Theory and Modeling)
Employment
Source: Self-asserted source
R. E. Groenewald

Modern Electron: Bothell, WA, US

2019-01-01 to 2022-08-17 | Senior Computational Physicist (Computational Physics)
Employment
Source: Self-asserted source
R. E. Groenewald

Education and qualifications (3)

University of Southern California: Los Angeles, CA, US

2013-08-15 to 2018-12-15 | PhD (Department of Physics and Astronomy)
Education
Source: Self-asserted source
R. E. Groenewald

University of Southern California: Los Angeles, California, US

2013-08-15 to 2017-05-15 | Master of Science (USC Viterbi Department of Computer Science)
Education
Source: Self-asserted source
R. E. Groenewald

Saint Lawrence University: Canton, NY, US

2010-08-20 to 2013-05-15 | Bachelor of Science (Physics)
Education
Source: Self-asserted source
R. E. Groenewald

Professional activities (3)

Society for Industrial and Applied Mathematics: Philadelphia, Pennsylvania, US

Membership
Source: Self-asserted source
R. E. Groenewald

American Physical Society: College Park, Maryland, US

Membership
Source: Self-asserted source
R. E. Groenewald

American Mensa: Arlington, TX, US

Membership
Source: Self-asserted source
R. E. Groenewald

Funding (1)

Plasma Formation in Thermionic Energy Converters in the Presence of Binary Coulomb Collisions

Award
NERSC (Seattle, US)
GRANT_NUMBER:

DE-AC02-05CH11231

Source: Self-asserted source
R. E. Groenewald

Works (21)

Mode transitions and spoke structures in E×B Penning discharge

Physics of Plasmas
2025-01-01 | Journal article
Contributors: M. Tyushev; M. Papahn Zadeh; N. S. Chopra; Y. Raitses; I. Romadanov; A. Likhanskii; G. Fubiani; L. Garrigues; R. Groenewald; A. Smolyakov
Source: check_circle
Crossref

How the Exascale Computing Project and Private Magnetic Fusion Research Stimulated Each Other

Fusion Science and Technology
2024-10-22 | Journal article
Contributors: T. Tajima; S. A. Dettrick; Z. Lin; R. E. Groenewald; B. S. Nicks; A. Veksler; D. C. Barnes; F. Ceccherini; J. Drobny; L. Galeotti et al.
Source: check_circle
Crossref

A hybrid-PIC implementation in WarpX

Sherwood Fusion Theory
2023 | Conference poster
Contributors: R. E. Groenewald; Ales Necas; Scott Nicks; Dan Barnes; Francesco Ceccherini; Sean Dettrick
Source: Self-asserted source
R. E. Groenewald

Accelerated kinetic model for global macro stability studies of high-beta fusion reactors

Physics of Plasmas
2023-12-01 | Journal article
Contributors: R. E. Groenewald; A. Veksler; F. Ceccherini; A. Necas; B. S. Nicks; D. C. Barnes; T. Tajima; S. A. Dettrick
Source: check_circle
Crossref

Kinetic simulations of ignited mode cesium vapor thermionic converters

Journal of Applied Physics
2023-01-14 | Journal article | Author
Part of ISSN: 0021-8979
Part of ISSN: 1089-7550
Contributors: Amanda M. Lietz; R. E. Groenewald; Peter Scherpelz; Matthew Hopkins
Source: Self-asserted source
R. E. Groenewald
grade
Preferred source (of 2)‎

Impact of Coulomb scattering on argon plasma based thermionic converter performance

Energy
2022-12 | Journal article
Part of ISSN: 0360-5442
Contributors: R. E. Groenewald
Source: Self-asserted source
R. E. Groenewald
grade
Preferred source (of 2)‎

Characterization of a Duo-emitter Thermionic Diode

2022 23rd International Vacuum Electronics Conference (IVEC)
2022-04-25 | Conference paper
Contributors: Roelof Erasmus Groenewald; Daniel Velazquez; Peter Scherpelz
Source: Self-asserted source
R. E. Groenewald

High-Fidelity Particle-in-Cell Simulations of Thermionic Converters

2022 23rd International Vacuum Electronics Conference (IVEC)
2022-04-25 | Conference paper
Contributors: Peter Scherpelz; Roelof E. Groenewald; Kevin Zhu; Michael Kieburtz; Nicholas Ruof; Phill Miller; Amanda M. Lietz; Matthew M. Hopkins
Source: Self-asserted source
R. E. Groenewald

Systems and methods for local generation and/or consumption of hydrogen gas

2021 | Patent
Source: Self-asserted source
R. E. Groenewald

Simulations of argon plasma decay in a thermionic converter

Physical Review E
2021-02-15 | Journal article
Part of ISSN: 2470-0045
Part of ISSN: 2470-0053
Source: Self-asserted source
R. E. Groenewald
grade
Preferred source (of 2)‎

WarpX Exascale Update - New Platforms, Functionality and Applications

APS Division of Plasma Physics Meeting Abstracts
2021-01 | Conference paper
Source: Self-asserted source
R. E. Groenewald

Elements For Mitigating Electron Reflection and Vacuum Electronic Devices Incorporating Elements For Mitigating Electron Reflection

2020 | Patent
Source: Self-asserted source
R. E. Groenewald

Time-dependent plasma systems and methods for thermionic conversion

2020 | Patent
Contributors: R. E. Groenewald; Stephan E. Clark; Arvind Kannan; Andrew Koch; Hsin-I Lu; Alexander Pearse; Peter Scherpelz
Source: Self-asserted source
R. E. Groenewald

Localized plasmons in topological insulators

Physical Review B
2020-01-09 | Journal article
Part of ISSN: 2469-9950
Part of ISSN: 2469-9969
Source: Self-asserted source
R. E. Groenewald

Localized Plasmons in One Dimensional Topological Systems

APS March Meeting Abstracts
2019-01 | Conference paper
Source: Self-asserted source
R. E. Groenewald

Plasmonic Superconductivity in Layered Materials

Source: Self-asserted source
R. E. Groenewald

Plasmonic Superconductivity in Layered Materials

Bulletin of the American Physical Society
2018 | Journal article
URI:

https://lens.org/024-537-247-748-450

Source: Self-asserted source
R. E. Groenewald

Coulomb Interactions and Superconductivity in Low Dimensional Materials

2018-12 | Dissertation or Thesis
Source: Self-asserted source
R. E. Groenewald

Probing Gap Plasmons Down to Subnanometer Scales Using Collapsible Nanofingers

ACS Nano
2017-06-27 | Journal article
Part of ISSN: 1936-0851
Part of ISSN: 1936-086X
Source: Self-asserted source
R. E. Groenewald

Interplay of screening and superconductivity in low-dimensional materials

Physical Review B
2016-10-05 | Journal article
Part of ISSN: 2469-9950
Part of ISSN: 2469-9969
Source: Self-asserted source
R. E. Groenewald

Valley plasmonics in transition metal dichalcogenides

Physical Review B
2016-05-25 | Journal article
Part of ISSN: 2469-9950
Part of ISSN: 2469-9969
Source: Self-asserted source
R. E. Groenewald