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Radiological Science and Engineering

Bradley Johnson

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Dr. Johnson is the technical group manager for the Radiological Materials and Technology Development Group. He completed his undergraduate studies in Mechanical Engineering at the US Naval Academy in 1986, and proceeded to serve as an officer in the navy for 7 years as a surface warfare officer in the naval nuclear propulsion program. Dr. Johnson then pursued graduate studies in materials science and engineering at the University of Illinois at Urbana-Champaign, where he earned both a MS. and a PhD degree. His research was focused on the areas of synthesis and characterization of ceramic materials. After graduation, Brad was hired by Battelle to work as a research scientist at the Pacific Northwest National Laboratory in Richland, WA.

Dr. Johnson has worked in the areas of chemically bonded ceramics, cement-based materials, high temperature structural ceramics, passivation of super-alloys, solid oxide fuel cell sealing glass, catalyst development, nanotechnology, infrared photonic materials, non-oxide materials synthesis, radiation detector development, and reactor materials technology. His technical interests are centered around materials characterization to understand and solve materials development and integration issues. He has expertise in the areas of materials synthesis, analytical electron microscopy and x-ray diffraction analysis.

Education and Credentials

  • Ph.D., Materials Science and Engineering, University of Illinois at Urbana-Champaign
  • M.S., Materials Science and Engineering, University of Illinois at Urbana-Champaign
  • B.S., Mechanical Engineering, U.S. Naval Academy

Affiliations and Professional Service

  • American Ceramic Society
  • Keramos
  • Microscopy Society of America
  • Microbeam Analysis Society

Awards and Recognitions

  • DOE Outstanding Mentor Award
  • Keramos Greaves-Walker Roll of Honor Award
  • R&D 100 Award
  • American Ceramic Society Ceramographic Competition: 1st place and 3rd place awards

Selected Publications


  • Xu K, DK Schreiber, Y Li, BR Johnson, and JS McCloy. 2017. "Effect of defects, magnetocrystalline anisotropy, and shape anisotropy on magnetic structure of iron thin films by magnetic force microscopy." AIP Advances 7(5):056806.  doi:10.1063/1.4976580


  • Suter JD, P Ramuhalli, JS McCloy, K Xu, SY Hu, Y Li, W Jiang, DJ Edwards, AL Schemer-Kohrn, and BR Johnson. 2015. "Meso-Scale Magnetic Signatures for Nuclear Reactor Steel Irradiation Embrittlement Monitoring." In 41ST ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Volume 34, vol. 1650, ed. Dale E Chimenti and Leonard J. Bond, pp. 1476-1485.  AIP Publishing LLC, Melville, NY.  doi:10.1063/1.4914765


  • Johnson BR. 2014. "Scientific Solutions to Nuclear Waste Environmental Challenges." Architectural Glass Concepts Magazine 5(1):30-49. 
  • Li Y, SY Hu, K Xu, JD Suter, JS McCloy, BR Johnson, and P Ramuhalli. 2014. Preliminary Phase Field Computational Model DevelopmentPNNL-23904, Pacific Northwest National Laboratory, Richland, WA. 


  • Chung CW, LA Turo, JV Ryan, BR Johnson, and JS McCloy. 2013. "The effect of concentration on the structure and crystallinity of a cementitious waste form for caustic wastes." Journal of Nuclear Materials 437(1-3):332-340.  doi:10.1016/j.jnucmat.2013.02.035
  • Ding F, W Xu, X Chen, J Zhang, MH Engelhard, Y Zhang, BR Johnson, JV Crum, TA Blake, X Liu, and J Zhang. 2013. "Effects of Carbonate Solvents and Lithium Salts on Morphology and Coulombic Efficiency of Lithium Electrode." Journal of the Electrochemical Society 160(10):A1894-A1901.  doi:10.1149/2.100310jes
  • McCloy JS, RO Montgomery, P Ramuhalli, RM Meyer, SY Hu, Y Li, CH Henager, Jr, and BR Johnson. 2013. Materials Degradation and Detection (MD2): Deep Dive Final ReportPNNL-22309, Pacific Northwest National Laboratory, Richland, WA. 
  • McCloy JS, BJ Riley, DA Pierce, BR Johnson, and HA Qiao. 2013. "Infrared-Transmitting Glass-Ceramics: A Review." In Window and Dome Technologies and Materials XIII, April 29, 2013, Baltimore, Maryland. Proceedings of the SPIE, vol. 8708, ed. RW Tustison and BJ Zelinski, p. Article No. 87080N.  SPIE, Bellingham, WA.  doi:10.1117/12.2019142
  • Riley BJ, BR Johnson, HT Schaef, and SK Sundaram. 2013. "Sublimation-Condensation of Multiscale Tellurium Structures." Journal of Physical Chemistry C 117(19):10128-10134.  doi:10.1021/jp400363a



  • McCloy JS, RK Kukkadapu, JV Crum, BR Johnson, and TC Droubay. 2011. "Size Effects on Gamma Radiation Response of Magnetic Properties of Barium Hexaferrite Powders." Journal of Applied Physics 110(11):Article No. 113912.  doi:10.1063/1.3665769


  • Matson DW, GL Graff, JL Male, BR Johnson, Z Nie, AG Joly, and LC Olsen. 2010. "Synthesis and Screening of Thin Films in the CeCl3-CeBr3 System for Scintillator Applications." Thin Solid Films 518(12):3194-3198.  doi:10.1016/j.tsf.2009.09.015
  • McCloy JS, BJ Riley, BR Johnson, MJ Schweiger, HA Qiao, and N Carlie. 2010. "The Predictive Power of Electronic Polarizability for Tailoring the Refractivity of High Index Glasses Optical Basicity Versus the Single Oscillator Model ." Journal of the American Ceramic Society 93(6):1650-1662. 
  • McCloy JS, BJ Riley, SK Sundaram, HA Qiao, JV Crum, and BR Johnson. 2010. "Structure-Optical Property Correlations of Arsenic Sulfide Glasses in Visible, Infrared, and Sub-millimeter Regions ." Journal of Non-crystalline Solids 356(25-27):1288-1293. 


  • Johnson BR, BJ Riley, SK Sundaram, JV Crum, CH Henager, Jr, Y Zhang, V Shutthanandan, CE Seifert, RM Van Ginhoven, CE Chamberlin, A Rockett, D Hebert, and A Aquino. 2009. "Synthesis and Characterization of Bulk Vitreous Cadmium Germanium Arsenide." Journal of the American Ceramic Society 92(6):1236-1243.  doi:10.1111/j.1551-2916.2009.03001.x
  • Johnson BR, BJ Riley, JV Crum, JV Ryan, SK Sundaram, JS McCloy, and A Rockett. 2009. FY08 Annual Report: Amorphous Semiconductors for Gamma Radiation Detection (ASGRAD)PNNL-22277, Pacific Northwest National Laboratory, Richland, WA. 
  • Johnson BR, JV Crum, SK Sundaram, RM Van Ginhoven, CE Seifert, BJ Riley, and JV Ryan. 2009. "DC Ionization Conductivity of Amorphous Semiconductors for Radiation Detection Applications." IEEE Transactions on Nuclear Science 56(3, PT. 2):863-868. 
  • McCloy JS, DV Jordan, JF Kelly, DL McMakin, BR Johnson, and LW Campbell. 2009. Electromagnetic material changes for remote detection and monitoring: a feasibility study: Progress report PNNL-18863, Pacific Northwest National Laboratory, Richland, WA. 


  • Johnson BR, BJ Riley, JV Crum, SK Sundaram, CH Henager, Jr, CE Seifert, RM Van Ginhoven, A Rockett, and A Aquino. 2008. ASGRAD FY07 Annual ReportPNNL-17514, Pacific Northwest National Laboratory, Richland, WA. 
  • Anheier NC, Jr, BE Bernacki, NA Carlie, KL Gervais, BK Hatchell, BR Johnson, K Krishnaswami, JS McCloy, MC Phillips, and HA Qiao. 2008. FY 2008 Infrared Photonics Final ReportPNNL-18207, Pacific Northwest National Laboratory, Richland, WA. 
  • Hu J, RA Dagle, BR Johnson, HW Kreuzer, DJ Gaspar, BQ Roberts, and ML Alexander. 2008. "Development of a Micropyrolyzer for Enhanced Isotope Ratio Measurement." Industrial and Engineering Chemistry Research 47(22):8625-8630.  doi:10.1021/ie8009236


  • Johnson BR, BJ Riley, JV Crum, SK Sundaram, CH Henager, Jr, Y Zhang, and V Shutthanandan. 2007. FY06 Annual Report: Amorphous Semiconductors for Gamma Radiation Detection (ASGRAD)PNNL-16429, Pacific Northwest National Laboratory, Richland, WA. 
  • Johnson BR, NL Canfield, DN Tran, RA Dagle, XS Li, JD Holladay, and Y Wang. 2007. "Engineered SMR catalysts based on hydrothermally stable, porous, ceramic supports for microchannel reactors." Catalysis Today 120(1):54-62. 
  • Riley BJ, SK Sundaram, BR Johnson, and LV Saraf. 2007. "Differential etching of chalcogenides for infrared photonic waveguide structures." Journal of Non-crystalline Solids 354(10-11):813-816.  doi:10.1016/j.jnoncrysol.2007.08.061


  • Allen PJ, BR Johnson, RT Baran, NC Anheier, Jr, SK Sundaram, MH Engelhard, and BT Broocks. 2006. "Surface Degradation of As2S3 Thin Films." Physics and Chemistry of Glasses 47(6):681-687. 
  • Lucas P, EA King, AD Horner, BR Johnson, and SK Sundaram. 2006. "Photostructural relaxation in AsSeS glasses: Effect of network fragility." Journal of Non-crystalline Solids 352(21-22):2067-2072.  doi:10.1016/j.jnoncrysol.2006.03.004
  • Riley BJ, BR Johnson, SK Sundaram, MH Engelhard, RE Williford, and JD Olmstead. 2006. "Pressure-temperature dependence of nanowire formation in the arsenic-sulfur system ." Physics and Chemistry of Glasses 47(6):675-680. 
  • Riley BJ, SK Sundaram, BR Johnson, and LV Saraf. 2006. Summary of Chalcogenide Glass Processing: Wet-Etching and PhotolithographyPNNL-16639, Pacific Northwest National Laboratory, Richland, WA. 


  • Johnson BR, MJ Schweiger, and SK Sundaram. 2005. "Chalcogenide nanowires by evaporation-condensation ." Journal of Non-crystalline Solids 351(16-17):1410-1416.  doi:10.1016/j.jnoncrysol.2005.02.018
  • Johnson BR, MJ Schweiger, and SK Sundaram. 2005. "Chalcogenide nanowires by evaporation-condensation." Journal of Non-crystalline Solids 351 :14101416. 
  • Allen PJ, BR Johnson, and BJ Riley. 2005. "Photo-oxidation of Thermally Evaporated As2S3 Thin Films." Journal of Optoelectronics and Advanced Materials 7(4):1759-1764. 
  • Anheier NC, Jr, BE Bernacki, BR Johnson, BJ Riley, and WA Sliger. 2005. FY 2005 Miniature Spherical Retroreflectors Final Report PNNL-15577, Pacific Northwest National Laboratory, Richland, WA. 
  • Anheier NC, Jr, PJ Allen, N Ho, K Krishnaswami, BR Johnson, SK Sundaram, BM Riley, JE Martinez, HA Qiao, and JF Schultz. 2005. FY 2005 Infrared Photonics Final ReportPNNL-15581, Pacific Northwest National Laboratory, Richland, WA. 
  • Thomas L, BR Johnson, JS Vetrano, and SM Bruemmer. 2005. "Microstructural and Microchemical Characterization of Primary-Side Cracks in an Alloy 600 Nozzle Head Penetration and its Alloy 182 J-Weld from the Davis-Besse Reactor Vessel ." In 12th International Conference on Environmental Degradation in Materials in Nuclear Systems - Water Reactors, ed. TR Allen, PJ King and L Nelson, pp. 567-578.  TMS , Warrendale, PA. 
  • Wang Y, BR Johnson, C Cao, YH Chin, RT Rozmiarek, Y Gao, and AY Tonkovich. 2005. "Engineered Catalysts for Microchannel Reactor Applications." In Microreactor Technology and Process Intensification, ACS Symposium Series, vol. 914, ed. Yong Wang and Jamelyn D. Holladay, pp. 102-118.  American Chemical Society, Washington, DC. 


  • Anheier NC, Jr, BR Johnson, and SK Sundaram. 2004. "Laser Writing in Arsenic Trisulfide Glass." Chapter 9 in Non-Crystalline Materials for Optoelectronics, Optoelectronic Materials and Devices, vol. 1, INOE Publishing House, Bucharest, Romania. 
  • Anheier NC, Jr, PJ Allen, PE Keller, WD Bennett, PM Martin, BR Johnson, SK Sundaram, BJ Riley, JE Martinez, HA Qiao, and JF Schultz. 2004. FY 2004 Infrared Photonics Final ReportPNNL-15209, Pacific Northwest National Laboratory, Richland, WA. 
  • Sundaram SK, BR Johnson, MJ Schweiger, JE Martinez, BJ Riley, LV Saraf, NC Anheier, Jr, PJ Allen, and JF Schultz. 2004. "Chalcogenide glasses and structures for quantum sensing." In Quantum sensing and nanophotonic devices, PROCEEDINGS- SPIE THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING , vol. 5359, ed. Manijeh Razeghi, Gail J. Brown, pp. 234-245.  S.P.I.E., Bellingham, WA, WA. 
  • Wang Y, YH Chin, RT Rozmiarek, BR Johnson, Y Gao, JM Watson, AY Tonkovich, and DP Vanderwiel. 2004. "Highly Active and Stable Rh/MgO-AI2O3 Catalysts for Methane Steam Reforming." Catalysis Today 98(4):575-581. 


  • Schultz JF, MS Taubman, WW Harper, RM Williams, TL Myers, BD Cannon, DM Sheen, NC Anheier, Jr, PJ Allen, SK Sundaram, BR Johnson, PM Aker, M Wu, and EK Lau. 2003. "Quantum cascade transmitters for ultra-sensitive chemical agent and explosives detection." In Quantum Sensing: Evolution and Revolution from Past to Future, SPIE Proceedings, vol. 4999, ed. M Razeghi and GJ Brown.  Society of Photo-Optical Instrumentation Engineers, Bellingham, WA. 

Radiological Science and Engineering

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