On Tuesday, the University of Alabama in Huntsville announced that two researchers in their College of Engineering have won a grant totaling $457,963 to study 3D magnetic reconnection. Magnetic reconnection refers to the breaking and reconnecting of oppositely directed magnetic field lines. This is a phenomenon at the heart of many solar events, such as solar flares, where magnetic field energy is converted to kinetic and thermal energy. The project seeks to examine this celestial process in the laboratory, with hopes that, in the future, it could lead to significant advances in space propulsion.
Jean Paul Allain is the Department of Energy’s Associate Director of Science for Fusion Energy Sciences.
“Basic and low-temperature plasma science is an important area with many scientific and technological impacts,” said Director Allain. “The research funded under this FOA will enable the U.S research community to address many fundamental and technological science challenges helping to ensure continued American leadership in this critical field.”
The award is part of a $9.96 million Department of Energy (DOE) Funding Opportunity Announcement (FOA) sponsored by the Office of Fusion Energy Sciences to support one- to three-year projects in plasma science and engineering at universities, private industry facilities, and national laboratories across the nation.
Dr. Gabe Xu is an associate professor at UAH. Dr. Jason Cassibry is a full professor in the Department of Mechanical and Aerospace Engineering at UAH.
Xu and Cassibry won the award with a proposal titled Laboratory Study of 3D Torsional Magnetic Reconnection to Understand Energy Conversion and Ion Acceleration. The goal of the collaborative project is to study 3D torsional magnetic reconnection (TMR) in the laboratory through the use of plasma jets accelerated along open magnetic field lines.
The professors explained that magnetic reconnection is a fundamental process where magnetic energy is converted into heat, kinetic energy, and fast particle energy. Magnetic field lines converge, separate, and join together again, accelerating a plasma to high velocities, which, in theory, could be applied to a thruster for advanced space travel. Theoretically, a magnetic reconnection thruster concept could potentially generate exhausts with velocities of hundreds of kilometers per second, well beyond the capability of any existing thruster technologies.
“Being a propulsion person, the fact that magnetic reconnection could be the next step in space propulsion got me interested in this research,” Dr. Xu said. “Studying the fundamental physics and behaviors of 3D TMR, and in particular how energy is transferred from the magnetic field to the plasma in order to accelerate the plasma jet, is important. The energy conversion to produce high velocity plasma jets has applications to space propulsion.”
The UAH researchers will collaborate with SpaceWave LLC to develop a TMR experiment consisting of a coaxial plasma gun and an external null field coil at UAH. This project will run through July 2026.
“This research will advance basic plasma science and engineering by demonstrating a first major experiment to study 3D TMR in the laboratory,” Dr. Xu continued. “To generate 3D TMR requires two sets of magnetic fields. We need a high-current plasma jet to generate a strong azimuthal magnetic field, which is where the plasma gun comes in. The plasma gun, which kind of looks like a railgun, can generate a plasma jet with high currents and azimuthal magnetic field. The experimental effort will be supported by computational modeling. Magnetic reconnection can produce extremely high-velocity plasmas, which would translate into high-efficiency propulsion.”
UAH is part of the University of Alabama System.
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