PNNL

Charmayne E. Lonergan is a glass scientist based in the Radiological Materials Group in the Energy and Environment Directorate at Pacific Northwest National Laboratory.

Charmayne currently works on glass formulations for waste vitrification in support of the Hanford Waste Treatment and Immobilization Plant mission. Her work includes processing novel glass compositions and analysis of their properties, modeling of glass properties, understanding the corrosion behavior of glass waste forms, and development of constraints for glass development. Additionally, she enjoys participating in STEM outreach and is a member of the American Ceramic Society's (ACerS) Young Professionals Network Steering Committee. 

• Glass
• Material Characterization
• Materials Engineering
• Materials Science
• Optical Materials
• Wasteform Development

• PhD, Material Sciences, Missouri University of Science & Technology
• BS, Ceramic Engineering, Clemson University

• Science, Technology, Engineering, and Math (STEM) Ambassador, PNNL
• Young Professionals Network, American Ceramic Society (ACerS)
• Waste Vitrification Technical Committee (TC05), International Commission on Glass

2020

• Asmussen R.M., S.A. Saslow, J.J. Neeway, A.L. Fujii Yamagata, A. Bourchy, T. Varga, and K.A. Rod, et al. 2020. Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste. PNNL-28545 Rev 1.0. Richland, WA: Pacific Northwest National Laboratory. Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste
• Lonergan C.E., J.L. George, D.A. Cutforth, T. Jin, P. Cholsaipant, S.E. Sannoh, and C.H. Skidmore, et al. 2020. Enhanced Hanford Low-Activity Waste Glass Property Data Development: Phase 3. PNNL-29847. Richland, WA: Pacific Northwest National Laboratory. Enhanced Hanford Low-Activity Waste Glass Property Data Development: Phase 3
• Lonergan J.M., C.E. Lonergan, J.A. Silverstein, P. Cholsaipant, and J.S. Mccloy. 2020. "Thermal Properties of Sodium Borosilicate Glasses as a Function of Sulfur Content." Journal of the American Ceramic Society 103, no. 6:3610-3619. PNNL-SA-147060. doi:10.1111/jace.17057
• Rod K.A., J.K. Iyer, C.E. Lonergan, T. Varga, K.J. Cantrell, and L.R. Reno. 2020. "Geochemical narrowing of cement fracture aperture during multiphase flow of supercritical CO2 and brine." International Journal of Greenhouse Gas Control 95. PNNL-SA-144527. doi:10.1016/j.ijggc.2020.102978
• Russell R.L., B.P. McCarthy, S.K. Cooley, G.F. Piepel, E. Cordova, S.E. Sannoh, and V. Gervasio, et al. 2020. Enhanced Hanford Low-Activity Waste Glass Property Data Development: Phase 2. PNNL-28838 Rev 1.0. Richland, WA: Pacific Northwest National Laboratory. Enhanced Hanford Low-Activity Waste Glass Property Data Development: Phase 2
• Sargin I., C.E. Lonergan, J.D. Vienna, J.S. Mccloy, and S.P. Beckman. 2020. "A Data-driven Approach for Predicting Nepheline Crystallization in High-Level Waste Glasses." Journal of the American Ceramic Society 103, no. 9:4913-4924. PNNL-SA-149642. doi:10.1111/jace.17122

2019

• Asmussen R.M., S.A. Saslow, J.J. Neeway, J.H. Westsik, K.A. Rod, C.E. Lonergan, and B.R. Johnson. 2019. Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste. PNNL-28545. Richland, WA: Pacific Northwest National Laboratory. Development and Characterization of Cementitious Waste Forms for Immobilization of Granular Activated Carbon, Silver Mordenite, and HEPA Filter Media Solid Secondary Waste
• Lonergan C.E. 2019. Direct Feed Low-Activity Waste Physical Property and Analyte Measurement Reduction. PNNL-28718. Richland, WA: Pacific Northwest National Laboratory. Direct Feed Low-Activity Waste Physical Property and Analyte Measurement Reduction
• Lonergan C.E., J.O. Kroll, C.H. Skidmore, Z.J. Nelson, and J.D. Vienna. 2019. X-Ray Diffraction and Product Consistency Test Results for the Phase 6 Study of Nepheline Formation in High-Level Waste Glasses. PNNL-29023. Richland, WA: Pacific Northwest National Laboratory. X-Ray Diffraction and Product Consistency Test Results for the Phase 6 Study of Nepheline Formation in High-Level Waste Glasses
• Lonergan C.E., K. Akinloye-Brown, J.A. Rice, V. Gervasio, N.L. Canfield, M.J. Schweiger, and J.D. Vienna. 2019. "Micron-sized spinel crystals in high level waste glass compositions: Determination of crystal size and crystal fraction." Journal of Nuclear Materials 514. PNNL-SA-134262. doi:10.1016/j.jnucmat.2018.11.039

2018

• Neeway J.J., R.M. Asmussen, E. Cordova, C.E. Lonergan, B.D. Williams, I.I. Leavy, and E.M. Mcelroy. 2018. FY2017 ILAW Glass Corrosion Testing with the Single-Pass Flow-Through Method. PNNL-27098. Richland, WA: Pacific Northwest National Laboratory. FY2017 ILAW Glass Corrosion Testing with the Single-Pass Flow-Through Method

2017

• Lonergan C.E. 2017. A Critical Review of Ion Exchange in Nuclear Waste Glasses to Support the Immobilized Low-Activity Waste Integrated Disposal Facility Rate Model. PNNL-26594. Richland, WA: Pacific Northwest National Laboratory. A Critical Review of Ion Exchange in Nuclear Waste Glasses to Support the Immobilized Low-Activity Waste Integrated Disposal Facility Rate Model

2016

• Vienna J.D., G.F. Piepel, D. Kim, J.V. Crum, C.E. Lonergan, B.A. Stanfill, and B.J. Riley, et al. 2016. 2016 Update of Hanford Glass Property Models and Constraints for Use in Estimating the Glass Mass to be Produced at Hanford by Implementing Current Enhanced Glass Formulation Efforts. PNNL-25835. Richland, WA: Pacific Northwest National Laboratory. 2016 Update of Hanford Glass Property Models and Constraints for Use in Estimating the Glass Mass to be Produced at Hanford by Implementing Current Enhanced Glass Formulation Efforts