Skip to Main Content U.S. Department of Energy
Nuclear Chemistry & Engineering

Bruce McNamara

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352

PNNL Patents

PNNL Publications


  • Scheele RD, AM Casella, and BK McNamara. 2017. "Use of Nitrogen Trifluoride to Purify Molten Salt Reactor Coolant and Heat Transfer Fluoride Salts." Industrial Engineering Chemistry Research 56(19):5505-5515.  doi:10.1021/acs.iecr.7b00374
  • Scheele RD, BK McNamara, JM Schwantes, DT Hobbs, MJ Minette, and CA Barrett. 2017. "Thermoanalytical Investigation of the Reactions Causing the Transuranic Waste Drum Breach that Occurred in the Waste Isolation Pilot Plant." Thermochimica Acta 650:76-87.  doi:10.1016/j.tca.2017.02.007
  • Surbella RG, III, L Ducati, KL Pellegrini, BK McNamara, J Autschbach, JM Schwantes, and CL Cahill. 2017. "Transuranic Hybrid Materials: Crystallographic and Computational Metrics of Supramolecular Assembly." Journal of the American Chemical Society 139(31):10843-10855.  doi:10.1021/jacs.7b05689
  • Sweet LE, JF Corbey, F Gendron, J Autschbach, BK McNamara, KL Ziegelgruber, LM Arrigo, S Peper, and JM Schwantes. 2017. "Structure and Bonding Investigation of Plutonium Peroxocarbonate Complexes Using Cerium Surrogates and Electronic Structure Modeling." Inorganic Chemistry 56(2):791-801.  doi:10.1021/acs.inorgchem.6b02235


  • Buck EC, EJ Mausolf, BK McNamara, CZ Soderquist, and JM Schwantes. 2016. "Sequestration of Radioactive Iodine in a Silver-Palladium Phase in Commercial Spent Nuclear Fuel." Journal of Nuclear Materials 482(2016):229-235.  doi:10.1016/j.jnucmat.2016.10.029
  • Clark RA, CJ Barinaga, BK McNamara, JM Schwantes, and NE Ballou. 2016. "Selective Fluorination and Separation of Metals with NF3 for Mass Spectrometry." Journal of Radioanalytical and Nuclear Chemistry 307(3):1587-1590.  doi:10.1007/s10967-015-4392-y
  • McNamara BK, MJ O'Hara, AM Casella, JC Carter, RS Addleman, and PJ MacFarlan. 2016. "Uniform deposition of uranium hexafluoride (UF6): Standardized mass deposits and controlled isotopic ratios using a thermal fluorination method." Talanta 154:219-227.  doi:10.1016/j.talanta.2016.03.054
  • Pool KN, MJ Minette, JH Wahl, LR Greenwood, DS Coffey, BK McNamara, SA Bryan, RD Scheele, CH Delegard, SI Sinkov, CZ Soderquist, SK Fiskum, GN Brown, and RA Clark. 2016. Compilation of PRF Canyon Floor Pan Sample Analysis ResultsPNNL-25254 Rev 1, Pacific Northwest National Laboratory, Richland, WA. 
  • Ward JD, ME Bowden, CT Resch, SC Smith, BK McNamara, EC Buck, GC Eiden, and AM Duffin. 2016. "Identification of Uranyl Minerals Using Oxygen K-Edge X Ray Absorption Spectroscopy." Geostandards and Geoanalytical Research 40(1):135-148.  doi:10.1111/j.1751-908X.2015.00337.x


  • Casella AM, RD Scheele, and BK McNamara. 2015. "Characterization of the Kinetics of NF3-Fluorination of NpO2." AIP Advances 5(12):Article No. 127230.  doi:10.1063/1.4939143
  • Clark RA, BK McNamara, CJ Barinaga, JM Peterson, N Govind, A Andersen, DG Abrecht, JM Schwantes, and NE Ballou. 2015. "Electron Ionization Mass Spectrum of Tellurium Hexafluoride." Inorganic Chemistry 54(10):4821-4826.  doi:10.1021/acs.inorgchem.5b00342
  • Finn EC, BK McNamara, LR Greenwood, RS Wittman, CZ Soderquist, VT Woods, BA VanDevender, LA Metz, and JI Friese. 2015. "Modeling and production of 240Am by deuteron-induced activation of a 240Pu target ." Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms 349:39-44.  doi:10.1016/j.nimb.2015.02.001
  • Johnson TJ, LE Sweet, DE Meier, EJ Mausolf, E Kim, PF Weck, EC Buck, and BK McNamara. 2015. "Dehydration of Uranyl Nitrate Hexahydrate to Uranyl Nitrate Trihydrate under Ambient Conditions as Observed via Dynamic Infrared Reflectance Spectroscopy." In Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVI, April 20, 2015, Baltimore, Maryland. Proceedings of the SPIE, vol. 9455, ed. AW Fountain, p. Article No.945504.  SPIE , Bellingham, WA.  doi:10.1117/12.2179704
  • Johnson TJ, LE Sweet, DE Meier, EJ Mausolf, E Kim, PF Weck, EC Buck, and BK McNamara. 2015. "Time-Resolved Infrared Reflectance Studies of the Dehydration-Induced Transformation of Uranyl Nitrate Hexahydrate to the Trihydrate Form." Journal of Physical Chemistry A 119(39):9996-10006.  doi:10.1021/acs.jpca.5b06365


  • Barrett CA, A Martinez, BK McNamara, BD Cannon, and NC Anheier, Jr. 2014. "Adsorptive Films in Support of In-field UF6 Destructive Assay Sample Collection and Analysis." In 55th Annual Meeting of the Institute of Nuclear Materials Management (INMM 2014), July 20-24, 2014, Atlanta, Georgia, vol. 4, pp. 3303-3312.  Institute of Nuclear Materials Management, Deerfield, IL. 
  • McNamara BK, EC Buck, CZ Soderquist, FN Smith, EJ Mausolf, and RD Scheele. 2014. "Separation of metallic residues from the dissolution of a high-burnup BWR fuel using nitrogen trifluoride." Journal of Fluorine Chemistry 162:1-8.  doi:10.1016/j.jfluchem.2014.02.010
  • Schwantes JM, LE Sweet, LW Mcdonald, IV, BK McNamara, DG Abrecht, DD Reilly, and CJ Barinaga. 2014. Summary of the NTNFC Postdoctoral Fellowship Program PNNL.13.007 PNNL-23235, Pacific Northwest National Laboratory, Richland, WA. 
  • Wittman RS, EC Buck, EJ Mausolf, BK McNamara, FN Smith, and CZ Soderquist. 2014. "Conditions for critical effects in the mass action kinetics equations for water radiolysis." Journal of Physical Chemistry A 118(51):12105-12110.  doi:10.1021/jp509856g
  • Wittman RS, EC Buck, EJ Mausolf, BK McNamara, FN Smith, and CZ Soderquist. 2014. "Conditions for critical effects in the mass action kinetics equations for water radiolysis." The Journal of Physical Chemistry Letters 118(51):12105-12110.  doi:10.1021/jp509856g


  • Johnsen AM, CZ Soderquist, BK McNamara, and DR Fisher. 2013. "A Non-Aqueous Reduction Process for Purifying 153Gd Produced in Natural Europium Targets." Applied Radiation and Isotopes 82:158-165.  doi:10.1016/j.apradiso.2013.07.025
  • Scheele RD, BK McNamara, AM Casella, AE Kozelisky, and D Neiner. 2013. "Thermal NF3 fluorination/oxidation of cobalt, yttrium, zirconium, and selected lanthanide oxides." Journal of Fluorine Chemistry 146:86-97.  doi:10.1016/j.jfluchem.2012.12.013


  • Anheier NC, Jr, BD Cannon, HA Qiao, JC Carter, BK McNamara, MJ O'Hara, JR Phillips, and MM Curtis. 2012. "Onsite Gaseous Centrifuge Enrichment Plant UF6 Cylinder Destructive Analysis." In 53rd Annual Meeting of the Institute of Nuclear Materials Management (INMM 53), July 15-19,2012, Orlando, Florida, vol. 1, pp. 764-772.  INMM -Institute of Nuclear Materials Management, Deerfield, IL. 
  • Buck EC, RS Wittman, FN Skomurski, KJ Cantrell, BK McNamara, and CZ Soderquist. 2012. Radiolysis Process ModelPNNL-21554, Pacific Northwest National Laboratory, Richland, WA. 
  • Scheele RD, BK McNamara, AM Casella, and AE Kozelisky. 2012. "On the Use of Thermal NF3 as the Fluorination and Oxidation Agent in Treatment of Used Nuclear Fuels." Journal of Nuclear Materials 424(1-3):224-236.  doi:10.1016/j.jnucmat.2012.03.004
  • Soderquist CZ, BK McNamara, and DR Fisher. 2012. "Production of High-purity Radium-223 from Legacy Actinium-beryllium Neutron Sources." Current Radiopharmaceuticals 5(3):244-252.  doi:10.2174/1874471011205030244


  • Casella AM, RD Scheele, and BK McNamara. 2011. "Kinetics of Separations of Volatile Fluorides from Used Fuel Using NF3." Transactions of the American Nuclear Society 105(1):215-216. 
  • McNamara BK, RD Scheele, AM Casella, and AE Kozelisky. 2011. Nitrogen Trifluoride-Based Fluoride- Volatility Separations Process: Initial StudiesPNNL-20775, Pacific Northwest National Laboratory, Richland, WA. 
  • Soderquist CZ, AM Johnsen, BK McNamara, BD Hanson, JW Chenault, KJ Carson, and SM Peper. 2011. "Dissolution of Irradiated Commercial UO2 Fuels in Ammonium Carbonate and Hydrogen Peroxide." Industrial and Engineering Chemistry Research 50(4):1813-1818.  doi:10.1021/ie101386n


  • Gerlach DC, BD Reid, CJ Gesh, MR Mitchell, SC Szechenyi, M Douglas, BK McNamara, TA Ellis, and RM Ermi. 2010. "Secondary Ion Mass Spectrometry Analysis of Materials to Develop In-core Safeguards Reactor Monitoring Devices." In Proceedings of the 51st Annual Meeting of the Institute of Nuclear Materials Management, July 11-15, 2010, Baltimore, Maryland.  Institute of Nuclear Materials Management, Deerfield, IL. 


  • Gorman-Lewis D, T Shareva, KA kubatko, P burns, DM Wellman, BK McNamara, szymanowski, A Navrotsky, and JB Fein. 2009. "Thermodynamic properties of autunite, uranyl hydrogen phosphate, and uranyl orthophosphate from solubility and calorimetric measurements." Environmental Science & Technology 43(19):7416-7422. 
  • Lumetta GJ, BK McNamara, EC Buck, SK Fiskum, and LA Snow. 2009. "CHARACTERIZATION OF HIGH PHOSPHATE RADIOACTIVE TANK WASTE AND SIMULANT DEVELOPMENT." Environmental Science & Technology 43(20):7843-7848. 
  • McNamara BK, RD Scheele, AE Kozelisky, and MK Edwards. 2009. "Thermal Reactions of Uranium Metal, UO2, U3O8, UF4, and UO2F2 with NF3 to Produce UF6 ." Journal of Nuclear Materials 394(2-3):166-173. 
  • Wellman DM, BK McNamara, DH Bacon, EA Cordova, RM Ermi, and LM Top. 2009. "Dissolution Kinetics of Meta-Torbernite under Circum-neutral to Alkaline Conditions." Environmental Chemistry 6(6):551-560. 


  • Fiskum SK, EC Buck, RC Daniel, KE Draper, MK Edwards, TL Hubler, LK Jagoda, ED Jenson, AE Kozelisky, GJ Lumetta, PJ MacFarlan, BK McNamara, RA Peterson, SI Sinkov, LA Snow, and RG Swoboda. 2008. Characterization and Leach Testing for REDOX Sludge and S-Saltcake Actual Waste Sample CompositesPNNL-17368, Pacific Northwest National Laboratory, Richland, WA. 
  • Peper SM, BK McNamara, MJ O'Hara, and M Douglas. 2008. "A Green Approach to SNF Reprocessing: Are Common Household Reagents the Answer?" In Proceedings of the 8th International Conference on Facility Operations-Safeguards Interface, March 30-April 4, 2008, Portland, Oregon, p. Paper No. 84.  American Nuclear Society, La Grange Park, IL. 
  • Scheele RD, BK McNamara, and LM Bagaasen. 2008. Thermal Flammable Gas Production from Bulk Vitrification Feed PNNL-17491, Pacific Northwest National Laboratory, Richland, WA. 
  • Soderquist CZ, BM Oliver, and BK McNamara. 2008. "Dissolution of Uranium Metal Without Hydride Formation or Hydrogen Gas Generation." Journal of Nuclear Materials 378(3):299-304.  doi:10.1016/j.jnucmat.2008.05.014



  • Lumetta GJ, BK McNamara, TL Hubler, DW Wester, J Li, and SL Latesky. 2006. "Potential Application of Kläui Ligands in Actinide Separations." Chapter 13 in Separations for the Nuclear Fuel Cycle in the 21st Century, ACS Symposium Series, vol. 933, ed. Gregg J Lumetta, et al. , pp. 201-218.  American Chemical Society, Washington, DC. 
  • McNamara BK, LA Snow, CZ Soderquist, SI Sinkov, HM Cho, and JI Friese. 2006. "The radiation induced chemistry of uranyl cation in aqueous carbonate -bicarbonate solutions as followed by NMR spectroscopy." In 2nd Symposium on Actinides - Basic Scienc, Applications and Technology held at the Materials Science Research Society Fall Meeting in Boston, Nov. 28-Dec. 1, 2005, Published in Actinides 2005 , ed. Lynda Soderholm, pp. 369-374.  Materials Research Society, Warrendale, PA. 
  • Scheele RD, BK McNamara, BM Rapko, MK Edwards, AE Kozelisky, RC Daniel, TI McSweeney, SJ Maharas, P Weaver, KJ Iwamasa, and RA Kefgen. 2006. "Development of NF3 Deposit Removal Technology for the Portsmouth Gaseous Diffusion Plant." In Waste Management Symposium 2006: Global Accomplishments in Environmental and Radioactive Waste Management: Education and Opportunity for the Next Generation of Waste Management Professionals.  Arizona Board of Regents, Tucson, AZ. 
  • Snow LA, BK McNamara, SI Sinkov, HM Cho, and JI Friese. 2006. "Observation of Radiolytic Field Alteration of the Uranyl Cation in Bicarbonate Solution ." In Actinides 2006-Basic Science, Applications and Technology. Materials Research Society Symposium Proceedings, vol. 986, ed. K.J.M. Blobaum, E. Chandler, L. Havela, M.B. Maple, M.Neu, pp. 177-182.  Materials Research Society, Warrendale, PA. 


  • Wellman DM, JP Icenhower, EM Pierce, BK McNamara, SD Burton, KN Geiszler, SR Baum, and BC Butler. 2005. "Polyphosphate Amendments for In-Situ Immobilization of Uranium Plumes." Chapter C2-10 in Third International Conference on Remediation of Contaminated Sediments, vol. 3, ed. R.F. Olfenbuttel and P.J. White.  Battelle Press, Columbus, OH. 
  • Hanson BD, BK McNamara, EC Buck, JI Friese, ED Jenson, KM Krupka, and BW Arey. 2005. "Corrosion of commercial spent nuclear fuel. 1. Formation of studtite and metastudtite." Radiochimica Acta 93:159-168. 
  • Kim DS, CZ Soderquist, JP Icenhower, BP McGrail, RD Scheele, BK McNamara, LM Bagaasen, MJ Schweiger, JV Crum, JD Yeager, J Matyas, LP Darnell, HT Schaef, AT Owen, AE Kozelisky, LA Snow, and MJ Steele. 2005. Tc Reductant Chemistry and Crucible Melting Studies with Simulated Hanford Low-Activity WastePNNL-15131, Pacific Northwest National Laboratory, Richland, WA. 
  • McNamara BK, BD Hanson, EC Buck, and CZ Soderquist. 2005. "Corrosion of Commercial Spent Nuclear Fuel. 2. A Radiochemical Analyses of Metastudtite and Leachates ." Radiochimica Acta 93(3):169-175. 


  • Buck EC, and BK McNamara. 2004. "Precipitation of Nitrate-Cancrinite in Hanford Tank Sludge." Environmental Science and Technology 38(16):4432-4438. 
  • Buck EC, BD Hanson, and BK McNamara. 2004. "The Geochemical Behaviour of Tc, Np, and Pu in Spent Nuclear Fuel in an Oxidizing Environment." Chapter 3 in Energy, Waste, and the Environment: A Geochemical Perspective, vol. 236, ed. R. Giere and P. Stille, pp. 65-88.  Geological Society, London, United Kingdom. 
  • Buck EC, BD Hanson, JI Friese, M Douglas, and BK McNamara. 2004. "Evidence for Neptunium Incorporation into Uranium (VI) Phases." In Scientific Basis for Nuclear Waste Management XXVIII. Materials Research Society Symposium Proceedings, vol. 824, pp. 133-138.  Materials Research Society, Warrendale, PA. 
  • Buck EC, BK McNamara, and BD Hanson. 2004. Alternative Conceptual Model for Colloid Generation from Commercial Spent Nuclear FuelPNNL-14306, Pacific Northwest National Laboratory, Richland, WA. 
  • Cho HM, WA De Jong, BK McNamara, BM Rapko, and IE Burgeson. 2004. "Temperature and Isotope Substitute Effects on the Structure and NMR Properties of the Pertechnetate Ion in Water." Journal of the American Chemical Society 126(37):11583-11588. 
  • Friese JI, M Douglas, BK McNamara, SB Clark, and BD Hanson. 2004. Np Behavior in Synthesized Uranyl Phases: Results of Initial TestsPNNL-14856, Pacific Northwest National Laboratory, Richland, WA. 
  • Lumetta GJ, DW Wester, BK McNamara, TL Hubler, SL Latesky, CC Martyr, and KN Richards. 2004. "A NEW EXTRACTION CHROMATOGRAPHY RESIN CONTAINING KLÄUI LIGANDS FOR APPLICATION IN ACTINIDE SEPARATIONS." Solvent Extraction and Ion Exchange 22(6):947-960.  doi:10.1081/SEI-200037442
  • McNamara BK, BD Hanson, EC Buck, and CZ Soderquist. 2004. "A radiochemical analyses of metastudtite and leachates from spent fuel." In Scientific Basis for Nuclear Waste Management XXVII. Materials Research Society Symposium Proceedings, vol. 824, pp. 139-144.  Materials Research Society, Warrendale, PA. 




  • Lumetta GJ, BK McNamara, BM Rapko, RL Sell, RD Rogers, G Broker, and JE Hutchison. 2000. "Synthesis and Characterization of mono- and bis-(tetraalkylmalonamide)Uranium(VI) Complexes." Inorganica Chimica Acta 309(1-2):103-108. 
  • Rapko BM, BK McNamara, RD Rogers, GA Broker, GJ Lumetta, and BP Hay. 2000. "Coordination of Lanthanide Triflates and Perchlorates with N,N,N',N'-Tetramethylsuccinamide ." Inorganic Chemistry 39(21):4858-4867. 


  • McNamara BK, GJ Lumetta, and BM Rapko. 1999. "Extraction of Europium(III) Ion with Tetrahexylmalomamides." Solvent Extraction and Ion Exchange 17(6):1403-1421. 
  • Lumetta GJ, BK McNamara, and BM Rapko. 1999. The SX Solver: A New Computer Program for Analyzing Solvent- Extraction Equilibria. PNNL-12085, Pacific Northwest National Laboratory, Richland, WA. 
  • Lumetta GJ, BK McNamara, BM Rapko, and JE Hutchison. 1999. "Complexation of Uranyl Ion By Tetrahexylmalonamides: An Equilibrium Modeling and Infrared Spectroscopic Study." Inorganica Chimica Acta 293(2):195-205. 
  • Rapko BM, BK McNamara, RD Rogers, GJ Lumetta, and BP Hay. 1999. "Ordination of Lanthanide Nitrates with N,N,N',N'- Tetramethylsuccinamide." Inorganic Chemistry 38(20):4585-4592. 

Nuclear Chemistry & Engineering

Additional Information

Primary Contacts

Karl Pool
Analytical Support Operations Lead

Don Bachand
RPL R&D Operations Manager