Thomas Marbory Antonsen Jr. (born December 7, 1950) is an American physicist, a Distinguished Professor in the Department of Physics and the Department of Electrical and Computer Engineering at the University of Maryland.
He joined the faculty of the University of Maryland in 1980 as a research assistant, where his research interests include nonlinear dynamics and chaos and plasma theory.
Antonsen was elected a Fellow of the American Physical Society in 1986 for "contributions to the theory of the stability of high temperature plasmas and the theory of the production of intense ion beams".
[3] He was named a Fellow of the Institute of Electrical and Electronics Engineers (IEEE) in 2012 for "contributions to the theory of magnetically confined plasmas, laser-plasma interactions and high power coherent radiation sources".
[5] He was also awarded the 2022 IEEE Marie Sklodowska-Curie Award[6] and the 2023 James Clerk Maxwell Prize for Plasma Physics from the American Physical Society.