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Zachary W. Friis, Ph.D., DABR

Orlando Field Office Director & Senior Medical Physicist

Zach Friis


Dr. Friis practices diagnostic medical physics, medical nuclear physics, and health physics at West Physics. He came to West Physics from the field of advanced plasma physics. His research encompassed the theoretical, computational, and experimental. In his doctoral dissertation research, he developed semi-automated computational tools used in an in-depth analysis of neutral particle transport within the plasma edge of a Tokamak. He has presented his research both regionally and nationally, and has interacted continuously with researchers both foreign and domestic. Dr. Friis also has in-depth experience with advanced electronics technology, radio astronomy, and non-linear optics.

Dr. Friis is originally from Valdosta, Georgia.


  • Doctor of Philosophy Nuclear and Radiological Engineering and Medical Physics –
    Georgia Institute of Technology
  • Master of Nuclear Engineering Nuclear and Radiological Engineering and Medical Physics – Georgia Institute of Technology
  • Bachelor of Science Physics, Astronomy, and Geosciences – Valdosta State University,
    Cum laude


  • American Board of Radiology – Diagnostic Radiological Physics


  • American Association of Physicists in Medicine
  • American Physical Society


Z. W. Friis, T. D. Rognlien, W. M. Stacey and R. J. Groebner, Comp. Phys. Comm., in preparation (2009).

Z.W. Friis, et al. 2009. “Analysis of neutral particle recycling and pedestal fueling in an H-mode DIII-D discharge”, in Review Physics of Plasmas.

W. M. Stacey, et al. 2005. “Investigation of the cause of the high-to-low mode confinement transition following multifaceted asymmetric radiation from edge formation in DIII-D”. Physics of Plasmas 12, 72518.

W. M. Stacey, et al. 2005. “A Subcritical, Gas-Cooled Fast Transmutation Reactor with a Fusion Neutron Source” Nucl. Tech 150, no. 2, 162-188.