Electron-beam Generated Plasmas and Their Applications - from Materials Processing to Space Propulsion

#Electron-beam #Generated #Plasmas #and #Their #Applications #- #from #Materials #Processing #to #Space #Propulsion

Electron-beam Generated Plasmas and Their Applications - from Materials Processing to Space Propulsion

The seminar will be conducted in person and simulcast via Zoom.

Passcode: MIPSE

Our next MIPSE seminar will be presented by Dr. Yevgeny Raitses of Princeton Plasma Physics Laboratory.  In this seminar (Wednesday, February 7, 3:30 pm in 1005 EECS), titled “Electron-beam generated plasmas and their applications - from materials processing to space propulsion”, Dr. Raitses will discuss his experimental and theoretical work towards understanding and applying moderate energy electron beams to produce partially ionized plasmas.  These devices range from ExB configurations to magnetic confinement devices, with applications for nanomaterials fabrication and propulsion.

  Date and Time




  • Date: 07 Feb 2024
  • Time: 03:30 PM to 04:30 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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  • Ann Arbor, Michigan
  • United States 48109
  • Room Number: 1005 EECS

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  • Starts 05 February 2024 08:44 AM
  • Ends 07 February 2024 05:00 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
  • No Admission Charge


Dr. Yevgeny Raitses Dr. Yevgeny Raitses of Princeton Plasma Physics Laboratory


Electron-beam Generated Plasmas and Their Applications - from Materials Processing to Space Propulsion

There is growing interest in electron beam (e-beam) generated low temperature plasmas (LTPs) for materials processing at atomic scales for microelectronics and quantum systems. For these applications, the plasma ([e] ∼ 109-1012 cm-3 , Te ∼ 0.1-10 eV) is typically generated by injecting an energetic (102 – 104 eV) e-beam into a low pressure (10-1-102 mTorr) gas along an applied magnetic field (10-103 Gauss). The B-field helps confine the e-beam propagating through the reactor. An applied electric field across the B-field enables control of the ion flux to the substrate (wafer) at the periphery of the plasma. The ability of e-beam plasma sources with crossed electric and magnetic (ExB) fields to selectively produce ions and reactive species with a uniform flux of low energy particles to the wafer makes them attractive for low damage processing of materials. Since e-beams efficiently ionize molecular gases at sub-mTorr pressures, they were recently proposed for airbreathing plasma thrusters at very Low Earth Orbits (70-200 km). In this talk, I will review concepts for e-beam generated LTP systems and their applications. I will outline key plasma processes, including plasma generation, cross-field diffusion and beam-plasma interactions. I will discuss challenges in control of characteristic instabilities, fluxes and energy distribution functions of electrons and ions in e-beam generated ExB plasmas.


Yevgeny Raitses is a Principal Research Physicist at the Princeton Plasma Physics La-boratory (PPPL) with expertise in experimental plasma physics. His more than 200 publications are on physics of crossed-field plasma devices, plasma-surface interactions, low temperature plasma and its applications to synthesis and processing of nanomaterials, and plasma diagnostics. Raitses received his PhD in Aerospace Engineering from Technion-Israel Institute of Technology in 1997. He joined PPPL in 1998. His current research interests include e-beam generated magnetized plasmas, advanced plasma propul-sion, and plasma diagnostics for semiconductor manufacturing. Dr. Raitses leads several projects and initiatives at PPPL including the DOE-Princeton Collaborative Low Temperature Plasma Research Facility (PCRF, https://pcrf.pppl.gov), advanced plasma propulsion physics (https://htx.pppl.gov), plasma-based nanosynthesis and nanofabrication of materials (https://nano.pppl.gov). Raitses is an associate fellow of the American Institute of Aeronautics and Astronauts and Fellow of the American Physical Society. Among many honors, Raitses received PPPL’s Kaul Foundation Prize for Excellence in Plasma Physics Research and Technology Development in 2019.

An IEEE Southeastern Michigan Section event. All are welcome. Consider becoming an IEEE member if such similar events are of professional/academic interest to you