New Publication

Williams, L. T., Walker, M. L. R., “Plume Structure and Ion Acceleration of a Helicon Plasma Source,” IEEE Transactions on Plasma Science, March 2015.

See HPEPL in GT AE and NSLC Videos

HPEPL is featured in two new videos by GT Aerospace and the National Student Leadership Conference. Check them out at the links below to learn more about what we do! Featuring HPEPL personnel: Dr. Mitchell Walker, Dr. Thomas Liu, doctoral candidate Scott King, and doctoral candidate Lake Singh.

Video by GT Aerospace

Video by NSLC

New Publication

Samuel Langendorf, Kunning Xu, Mitchell Walker, “Effects of wall electrodes on Hall effect thruster plasma,” Physics of Plasmas, February 2015, Vol. 22, No. 2, 023508. Fulltext added to publications page.

New Publication

Irina Schweigert, Samuel Langendorf, Mitchell Walker, Michael Keidar, “Sheath structure transition controlled by secondary electron emission,” Plasma Sources Science and Technology, February 2015, Vol. 24, No. 2, 025012. Fulltext added to publications page.

New Publication

Jason Frieman, Scott King, Mitchell Walker, Vadim Khayms, David King, “Role of a Conducting Chamber in the Hall Effect Thruster Electrical Circuit,” Journal of Propulsion and Power, Volume 30, Number 6, November-December 2014, pp. 1471-1479. Fulltext added to publications page.

New Publication

Schinder, A., Walker, M. L. R., Rimoli, J., “3D Model for Erosion of a Hall Effect Thruster Discharge Channel Wall,” Journal of Propulsion and Power, Volume 30, Number 5, September-October 2014, pg. 1373-1382. Fulltext added to publications page.

Ph.D. Defense – Lake Singh

HPEPL congratulates Dr. Lake Singh for the successful completion of his Ph.D. defense, “Very Low Earth Orbit Propellant Collection Feasibility Assessment.”

Dr. Singh obtained his a B.S. in Aerospace Engineering and B.S. in Physics from Virginia Tech in May 2009, and his M.S. in Aerospace Engineering from Georgia Tech in May 2012. His work included research on mN-class chemical microthrusters, carbon nanotube field emission cathodes, and on-orbit gas collection. Dr. Singh will be joining the Aerospace Corporation as a Member of the Technical Staff in early October.

HPEPL Welcomes New Students

HPEPL welcomes Tyler Scogin and Cheong Chan, joining in Fall 2014.

Tyler received his B.S. in Mechanical Engineering and a B.S. in Physics from the University of Arkansas in May 2014. As an undergraduate, Tyler completed internships at NASA’s Marshall Space Flight Center in Summer 2012, Stennis Space Center in Summer 2013, and at Johnson Space Center in Spring 2014. At NASA JSC, Tyler assisted with advanced propulsion physics concepts in the Eagleworks Laboratory.

Cheong recieved a M.S. in Physics from Yale University where he worked on problems ranging from fundamental physics measurements to image reconstruction algorithms. He interned at NASA as a data analyst for the Cassini Composite Infrared Spectrometer looking at the systematic noise sources. Cheong graduated from the University of California, Berkeley with a B.A. Physics where he built a small atom trap and worked on optics with the Holger Mueller Group. Additionally, he worked on development of a detection algorithm for the Rhessi instrument at Space Sciences Lab in Berkeley.


HPEPL is going on the road this week to the 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference in Cleveland, Ohio. HPEPL personnel will present research on vacuum facility effects in thruster testing, novel RF thruster development, and plasma-wall interactions.

Details of the conference schedule are available on the AIAA website, or by downloading the conference mobile app.

New Publication

Scott King, Mitchell Walker, Silvio Chianese, “Atmospheric Electric Propulsion Mission Performance Tool,” Journal of Spacecraft and Rockets, 2014, Volume 51, Issue 3, pp. 931-937. Fulltext added to publications page.