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Congratulations to Logan Williams on the successful defense of his Doctoral Dissertation "Ion Acceleration Mechanisms of Helicon Thrusters."Logan graduated with his BS in Mechanical Engineering with highest honors from Georgia Tech in August of 2006, joining HPEPL the same month. His current research involves the testing of carbon nanotube field emission cathodes and dual-use propellants.

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HPEPL is offering a new course, providing the attendee with in-depth instruction in Hall Effect Thruster physics and hands-on operation. See more details at the EP-course page!-

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Thomas Burton, Aaron Schinder, German Capuano, Julian Rimoli, Mitchell Walker, Gregory Thompson, “Plasma-Induced Erosion on Ceramic Wall Structures in Hall-Effect Thrusters,” Journal of Propulsion and Power, Volume 30, Number 3, May-June, 2014, pp. 690-695. Fulltext added to publications page.-

Logan Williams, Mitchell Walker, “Initial Performance Evaluation of a Gridded RF Ion Thruster,” Journal of Propulsion and Power, Volume 30, Number 3, May-June 2014, pp. 645-655. Fulltext added to publications page.-

Samuel Langendorf, Mitchell Walker, “Effect of Secondary Electron Emission on the Plasma Sheath,” Physics of Plasmas, March 2015, Vol. 22, 033515. Fulltext added to publications page.-