• Assistant Professor
  • Center for Nuclear Security Science and Policy Initiatives (NSSPI) Faculty Fellow
  • Texas A&M University ADVANCE Scholar
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Educational Background

  • Ph.D., Nuclear and Radiological Engineering, Georgia Institute of Technology, 2014
  • M.S., Nuclear and Radiological Engineering, Georgia Institute of Technology, 2009
  • B.S., Physics, University of British Columbia, 2006

Research Interests

  • Radiation Protection and Dosimetry
    • Computational Dosimetry
    • Internal and external dosimetry dose coefficient computation
    • Monte Carlo computational simulation of anthropomorphic phantoms
    • Biokinetic modeling (metabolism of radionuclides)
    • Nuclear Medicine
      • Radionuclide patient release following nuclear medicine procedures
    • Emergency Response and Defense
      • Population monitoring and dose estimation during a nuclear or radiological (IND/RDD) event
      • Triage assessment using radiation detection technology
    • Monte Carlo computational detector validation (NaI, LaBr3, HPGe, CZT) in contaminated environmental media 

    Nuclear Nonproliferation and Safeguards Material Control and Accountability (NMC&A)
    • Monte Carlo detector validation (e.g., NaI, LaBr3, HPGe, CZT) with special nuclear material (U/Pu)
    • Gamma-ray spectroscopy for NMC&A (enrichment and hold-up/MUF quantification)
    • Nuclear forensics, safeguards, and non-proliferation policy

Certifications & Memberships

  • Certificate of Nuclear Knowledge Management, 2014
  • American Nuclear Society – Radiation Protection and Shielding Division (Chair, 2018-2019), Nuclear Nonproliferation Policy Division (Chair, 2017-2018)
  • Health Physics Society – Homeland Security Section Board Liaison, Government Relations Committee

Awards & Honors

  • Health Physics Society – Elda E. Anderson Award (2018)
  • Elda E. Anderson Award Remarks: DOI: 10.1097/HP.0000000000000983

Selected Publications

  • Dewji, S.A., Bales, K., Asano, E., Veinot, K., Eckerman, K., Hart, S., Finklea, L. and Ansari, A., 2020. Estimation of External Contamination and Exposure Rates Due to Fission Product Release. Health Physics. Vancouver.
  • Kofler, C., Domal, S., Satoh, D., Dewji, S., Eckerman, K. and Bolch, W.E., 2019. Organ and detriment-weighted dose rate coefficients for exposure to radionuclide-contaminated soil considering body morphometries that differ from reference conditions: adults and children. Radiation and environmental biophysics, 58(4), pp.477-492.
  • Dewji, S.A., Bales, K., Griffin, K., Lee, C. and Hiller, M., 2018. Age-dependent comparison of monoenergetic photon organ and effective dose coefficients for pediatric stylized and voxel phantoms submerged in air. Physics in Medicine & Biology, 63(17), p.175019.
  • Dewji, S., Reed, K.L. and Hiller, M., 2017. Comparison of photon organ and effective dose coefficients for PIMAL stylized phantom in bent positions in standard irradiation geometries. Radiation and environmental biophysics, 56(3), pp.277-291.
  • Veinot, K.G., Eckerman, K.F., Bellamy, M.B., Hiller, M.M., Dewji, S.A., Easterly, C.E., Hertel, N.E. and Manger, R., 2017. Effective dose rate coefficients for exposure to contaminated soil. Radiation and environmental biophysics, 56(3), pp.255-267.
  • Bellamy, M.B., Veinot, K.G., Hiller, M.M., Dewji, S.A., Eckerman, K.F., Easterly, C.E., Hertel, N.E. and Leggett, R.W., 2017. Effective dose rate coefficients for immersions in radioactive air and water. Radiation protection dosimetry, 174(2), pp.275-286.
  • Dewji, S.A., Lee, D.L., Croft, S., Hertel, N.E., Chapman, J.A., McElroy Jr, R.D. and Cleveland, S., 2016. Validation of gamma-ray detection techniques for safeguards monitoring at natural uranium conversion facilities. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 823, pp.135-148.
  • Dewji, S., Hertel, N. and Ansari, A., 2013. Assessing internal contamination after the detonation of a radiological dispersion device using a 2×2-inch sodium iodide detector. Radiation protection dosimetry, 155(3), pp.300-316.