Brian Hehr

R&D S&E, Nuclear Engineering

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R&D S&E, Nuclear Engineering

bdhehr@sandia.gov

Biography

Brian Hehr is currently a Principal R&D Scientist and Engineer at Sandia National Laboratories in the Radiation Modeling and Metrology department.  Brian joined Sandia in 2010 and has been involved in radiation transport, neutron displacement damage modeling, and radiation effects in materials.  He is one of the principal investigators (PIs) of the Neutron Gamma Energy Transport (NuGET) code and is also PI of the CASCADE code for translating neutron environments into ensembles of defect clusters in materials.  Early in his career at Sandia, he created a kinetic Monte Carlo code to simulate the annealing of point defects in semiconductor devices.  Brian received NNSA Defense Programs Awards of Excellence in 2014 and 2017.  He has recently become involved in IAEA-sponsored collaborations on Nuclear Data.

Education

  • Ph.D. in Nuclear Engineering, North Carolina State University, 2010.
  • M.S. in Nuclear Engineering, North Carolina State University, 2007.
  • B.S. in Nuclear Engineering, North Carolina State University, 2005.
  • B.S. in Physics, North Carolina State University, 2005.
  • Minor in Japan Studies, North Carolina State University, 2005.

Publications

  • Hehr, B.D. (2022). Ellipsoidal Fitting Methodology for Defect Clusters in Gallium Arsenide. https://doi.org/10.2172/1847243 Publication ID: 80503
  • Jasica, M.J., Wampler, W.R., Vizkelethy, G., Hehr, B.D., Bielejec, E.S., & Bielejec, E.S. (2020). Photocurrent from single collision 14-MeV neutrons in GaN and GaAs. IEEE Transactions on Nuclear Science, 67(1), pp. 221-227. https://doi.org/10.1109/TNS.2019.2949720 Publication ID: 65232
  • Jasica, M.J., Wampler, W.R., Vizkelethy, G., Hehr, B.D., Bielejec, E.S., & Bielejec, E.S. (2019). Modeling Single Event Effects in GaAs and GaN Devices from 14 MeV Neutron-Induced Photocurrent Pulses [Conference Poster]. https://www.osti.gov/biblio/1641068 Publication ID: 69593
  • Hehr, B.D., Parma, E.J., Naranjo, G.E., & Naranjo, G.E. (2018). Evaluation of Secondary Gamma Environments at the Annular Core Research Reactor. https://doi.org/10.2172/1761372 Publication ID: 101420
  • Hehr, B.D. (2016). Partitioning of Ionization and Displacement Kerma in Material Response Functions. https://doi.org/10.2172/1561490 Publication ID: 49923
  • Hehr, B.D., Parma, E.J., Peters, C.D., Naranjo, G.E., Luker, S.M., & Luker, S.M. (2016). Characterization of Novel Calorimeters in the Annular Core Research Reactor [Conference]. EPJ Web of Conferences. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84961999204&origin=inward Publication ID: 40715
  • Hehr, B.D. (2014). Analysis of radiation effects in silicon using kinetic monte carlo methods [Presentation]. IEEE Transactions on Nuclear Science. https://doi.org/10.1109/TNS.2014.2368075 Publication ID: 37552
  • Hehr, B.D. (2014). Analysis of Radiation Effects in Silicon using Kinetic Monte Carlo Methods. IEEE Transactions on Nuclear Science, 61(6), pp. 2847-2854. https://doi.org/10.1109/TNS.2014.2368075 Publication ID: 37596
  • Hehr, B.D. (2014). Overview of Activities at SNL Technical Area V with a focus on calorimeter studies at the Annular Core Research Reactor [Presentation]. https://www.osti.gov/biblio/1241684 Publication ID: 38737
  • Hehr, B.D. (2014). LDRD Report : Analysis of Defect Clustering in Semiconductors using Kinetic Monte Carlo Methods. https://doi.org/10.2172/1465520 Publication ID: 36792
  • Hehr, B.D. (2013). Anaylsys of Defect Clustering in Semiconductors using Kinetic Monte Carlo Methods [Presentation]. https://www.osti.gov/biblio/1666149 Publication ID: 34568
Showing 10 of 11 publications.