Staff information

PNNL Publications

2025

• Strickland C.E., D.C. Linneman, J.M. Knox, D. Sirota, S.C. Myers, G. Abbott, and T.R. Alexander, et al. 2025. Low Yield Nuclear Monitoring Physics Experiment 1 - Integrated Data Acquisition System Design and Initial Observations. PNNL-37567. Richland, WA: Pacific Northwest National Laboratory. Low Yield Nuclear Monitoring Physics Experiment 1 - Integrated Data Acquisition System Design and Initial Observations

2021

• Burnett J.L., T.L. Stewart, M.E. Keillor, and J. Ely. 2021. "Investigating the detection of underground nuclear explosions by radon displacement." Journal of Environmental Radioactivity 229-230. PNNL-SA-154709. doi:10.1016/j.jenvrad.2021.106541

2018

• Keillor M.E., L.W. Campbell, C.C. Cowles, M.P. Dion, J. Ely, and C.R. Neumann. 2018. "Streamlined Monte Carlo Simulation of Environmental Gamma-Ray Backgrounds for Radiation Detector Sensitivity Comparisons." Journal of Radioanalytical and Nuclear Chemistry 318, no. 1:485-490. PNNL-SA-133971. doi:10.1007/s10967-018-6150-4

2017

• Erchinger J., J.L. Orrell, C.E. Aalseth, B.E. Bernacki, M. Douglas, E.S. Fuller, and M.E. Keillor, et al. 2017. "Background Characterization of an Ultra-Low Background Liquid Scintillation Counter." Applied Radiation and Isotopes 126. PNNL-SA-120443. doi:10.1016/j.apradiso.2017.01.032
• Keillor M.E., C.E. Aalseth, I.J. Arnquist, T.A. Eggemeyer, E.S. Fuller, B.D. Glasgow, and E.W. Hoppe, et al. 2017. "Recent Bremsstrahlung-based Assays of 210Pb in Lead and Comments on Current Availability of Low-Background Lead in North America." Applied Radiation and Isotopes 126. PNNL-SA-120723. doi:10.1016/j.apradiso.2017.03.001
• Mace E.K., C.E. Aalseth, J.M. Brandenberger, A.R. Day, E.W. Hoppe, P.H. Humble, and M.E. Keillor, et al. 2017. "Methods for Using Argon-39 to Age-Date Groundwater using Ultra-Low-Background Proportional Counting." Applied Radiation and Isotopes 126. PNNL-SA-121026. doi:10.1016/j.apradiso.2016.12.037
• Mace E.K., C.E. Aalseth, T.R. Alexander, H.O. Back, A.R. Day, E.W. Hoppe, and M.E. Keillor, et al. 2017. "Simultaneous Measurement of Tritium and Radiocarbon by Ultra-Low-Background Proportional Counting." Applied Radiation and Isotopes 126. PNNL-SA-120393. doi:10.1016/j.apradiso.2016.12.033
• McIntyre J.I., C.E. Aalseth, T.R. Alexander, H.O. Back, B.J. Bellgraph, T.W. Bowyer, and V.D. Chipman, et al. 2017. "Measurements of Argon-39 at theU20az Underground Nuclear Explosion Site." Journal of Environmental Radioactivity 178-179. PNNL-26326. doi:10.1016/j.jenvrad.2017.07.013
• Miley H.S., J.L. Burnett, M.P. Foxe, D.A. Haas, M.E. Keillor, J.D. Lowrey, and M.F. Mayer, et al. 2017. "The potential detection of low-level aerosol isotopes from new civilian nuclear processes." Applied Radiation and Isotopes 126. PNNL-SA-121151. doi:10.1016/j.apradiso.2017.02.033
• Williams R.M., C.E. Aalseth, J.M. Brandenberger, A.R. Day, E.C. Finn, E.S. Fuller, and E.W. Hoppe, et al. 2017. "Development of a Low-Level 39Ar Calibration Standard - Analysis by Absolute Gas Counting Measurements Augmented with Simulation." Applied Radiation and Isotopes 126. PNNL-SA-120659. doi:10.1016/j.apradiso.2017.02.018

2016

• Douglas M., B.E. Bernacki, J.L. Erchinger, E.C. Finn, E.S. Fuller, E.W. Hoppe, and M.E. Keillor, et al. 2016. "Liquid Scintillation Counting of Environmental Radioisotopes: A Review of the Impact of Background Reduction." Journal of Radioanalytical and Nuclear Chemistry 307, no. 3:2495-2504. PNNL-SA-108301. doi:10.1007/s10967-015-4512-8
• Keillor M.E., C.E. Aalseth, L.M. Arrigo, J.M. Brandenberger, J.M. Cloutier, G.C. Eiden, and J.E. Fast, et al. 2016. "Measurement Background and the Sediment Age-Dating Reach of 32Si." Journal of Radioanalytical and Nuclear Chemistry 307, no. 3:2313-2319. PNNL-SA-100544. doi:10.1007/s10967-015-4592-5
• Keillor M.E., L.M. Arrigo, J.E. Baciak, V.D. Chipman, R.S. Detwiler, D. Emer, and W.J. Kernan, et al. 2016. "PREX: AN EXPERIMENT TO INVESTIGATE DETECTION OF NEAR-FIELD PARTICULATE DEPOSITION FROM A SIMULATED UNDERGROUND NUCLEAR WEAPONS TEST VENT." Health Physics Society Newsletter 110, no. 5:533-547. PNNL-SA-114180. doi:10.1097/HP.0000000000000506
• Mace E.K., C.E. Aalseth, A.R. Day, E.W. Hoppe, M.E. Keillor, J.J. Moran, and M.E. Panisko, et al. 2016. "First results of a simultaneous measurement of tritium and 14C in an ultra-low-background proportional counter for environmental sources of methane." Journal of Environmental Radioactivity 155-156. PNNL-SA-111748. doi:10.1016/j.jenvrad.2016.02.001
• Okada C.E., W.J. Kernan, M.E. Keillor, R.R. Kirkham, R.D. Sorom, and D.M. Van Etten. 2016. "Measuring Concentrations of Particulate 140La in the Air." Health Physics 110, no. 5:418-426. PNNL-SA-112853. doi:10.1097/HP.0000000000000478
• Orrell J.L., C.E. Aalseth, I.J. Arnquist, T.A. Eggemeyer, B.D. Glasgow, E.W. Hoppe, and M.E. Keillor, et al. 2016. "Assay Methods for 238U, 232Th, and 210Pb in Lead and Calibration of 210Bi Bremsstrahlung Emission from Lead." Journal of Radioanalytical and Nuclear Chemistry 309, no. 3:1271-1281. PNNL-SA-115123. doi:10.1007/s10967-016-4732-6
• Rishel J.P., M.E. Keillor, L.M. Arrigo, J.E. Baciak, R.S. Detwiler, W.J. Kernan, and R.R. Kirkham, et al. 2016. "Using Atmospheric Dispersion Theory to Inform the Design of a Short-lived Radioactive Particle Release Experiment." Health Physics 110, no. 5:526-532. PNNL-SA-112734. doi:10.1097/HP.0000000000000475
• Williams R.M., C.E. Aalseth, T.W. Bowyer, A.R. Day, E.S. Fuller, D.A. Haas, and J.C. Hayes, et al. 2016. "Development of a Low-Level Ar-37 Calibration Standard." Applied Radiation and Isotopes 109. PNNL-SA-109332. doi:10.1016/j.apradiso.2015.12.027

2015

• Bernacki B.E., M. Douglas, J.L. Erchinger, E.S. Fuller, M.E. Keillor, S.M. Morley, and C.A. Mullen, et al. 2015. "Optical Design Considerations for Efficient Light Collection from Liquid Scintillation Counters." Applied Optics 54, no. 9:2413-2423. PNNL-SA-104952. doi:10.1364/AO.54.002413
• Erchinger J.L., C.E. Aalseth, B.E. Bernacki, M. Douglas, E.S. Fuller, M.E. Keillor, and S.M. Morley, et al. 2015. "Development of a low background liquid scintillation counter for a shallow underground laboratory." Applied Radiation and Isotopes 105. PNNL-SA-108085. doi:10.1016/j.apradiso.2015.08.027
• Erchinger J.L., J.L. Orrell, C.E. Aalseth, B.E. Bernacki, M. Douglas, E.C. Finn, and E.S. Fuller, et al. 2015. "Development of an Ultra-Low Background Liquid Scintillation Counter for Trace Level Analysis." In Institute of Nuclear Materials Management 56th Annual Meeting, July 12-16, 2015, Indian Wells, California. Deerfield, Illinois:INMM. PNNL-SA-110951.
• Keillor M.E., C.E. Aalseth, L.M. Arrigo, J.M. Brandenberger, J.M. Cloutier, G.C. Eiden, and J.E. Fast, et al. 2015. "Measurement Background and the Sediment Age-Dating Reach of 32Si." In MARC-X: 10th International Conference on Methods and Applications of Radioanalytical Chemistry, April 12-17, 2015, Kailua-Kona, Hawaii. La Grange Park, Illinois:American Nuclear Society. PNNL-SA-109510.

2013

• Aalseth C.E., A.R. Day, E.S. Fuller, E.W. Hoppe, M.E. Keillor, B.D. LaFerriere, and E.K. Mace, et al. 2013. "A New Shallow Underground Gas-Proportional Counting Lab - First Results and Ar-37 Sensitivity." Applied Radiation and Isotopes 81. PNNL-SA-89606. doi:10.1016/j.apradiso.2013.03.050
• Aalseth C.E., A.R. Day, E.S. Fuller, E.W. Hoppe, M.E. Keillor, E.K. Mace, and A.W. Myers, et al. 2013. "Digital Pulse-Shape Discrimination Applied to an Ultra-Low-Background Gas-Proportional Counting System: First Results." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:823-827. PNNL-SA-86923. doi:10.1007/s10967-012-2052-z
• Erikson L.E., M.E. Keillor, C.E. Aalseth, T.W. Hossbach, L.K. Mizouni, T.J. Stavenger, and B.S. McDonald, et al. 2013. "Determining HPGe Total Detection Efficiency Using ?-? Coincidence." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:705-710. PNNL-SA-87582. doi:10.1007/s10967-012-2186-z
• Keillor M.E., L.E. Erikson, C.E. Aalseth, A.R. Day, E.S. Fuller, B.D. Glasgow, and E.W. Hoppe, et al. 2013. "Empirical Correction of Crosstalk in a Low-Background Germanium ?-? Analysis System." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:683-687. PNNL-SA-89440. doi:10.1007/s10967-012-2143-x
• Mace E.K., C.E. Aalseth, R. Bonicalzi, A.R. Day, E.W. Hoppe, M.E. Keillor, and A.W. Myers, et al. 2013. "Controlling Low-Rate Signal Path Microdischarge for an Ultra-Low-Background Proportional Counter." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:753-758. PNNL-SA-86931.
• Miley H.S., T.W. Bowyer, M.D. Engelmann, P.W. Eslinger, J.I. Friese, L.R. Greenwood, and D.A. Haas, et al. 2013. "Measurement of Fukushima Aerosol Debris in Sequim and Richland, WA and Ketchikan, AK." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:877-882. PNNL-SA-86800. doi:10.1007/s10967-012-2231-y
• Seifert A., C.E. Aalseth, A.R. Day, E.S. Fuller, E.W. Hoppe, M.E. Keillor, and E.K. Mace, et al. 2013. "The Design, Construction, and Initial Characterization of an Ultra-Low-Background Gas-Proportional Counting System." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:915-921. PNNL-SA-86743. doi:10.1007/s10967-012-2059-5
• Seifert A., C.E. Aalseth, R. Bonicalzi, T.W. Bowyer, A.R. Day, E.S. Fuller, and D.A. Haas, et al. 2013. "Calibration of an Ultra-Low-Background Proportional Counter for Measuring 37Ar." In Low Radioactivity Techniques 2013 (LRT 2013): Proceedings of the IV International Workshop in Low Radioactivity Techniques, April 10-12, 2013, Assergi, Italy. AIP Conference Proceedings, edited by L Miramonti and LPandola, 1549, 26-29. Melville, New York:AIP Publishing. PNNL-SA-96364. doi:10.1063/1.4818068

2012

• Aalseth C.E., R. Bonicalzi, M.G. Cantaloub, A.R. Day, L.E. Erikson, J.E. Fast, and J.B. Forrester, et al. 2012. "A Shallow Underground Laboratory for Low-Background Radiation Measurements and Materials Development." Review of Scientific Instruments 83, no. 11:Article No. 113503. PNNL-SA-89084. doi:10.1063/1.4761923
• Biegalski S.R., T.W. Bowyer, P.W. Eslinger, J.I. Friese, L.R. Greenwood, D.A. Haas, and J.C. Hayes, et al. 2012. "Analysis of data from sensitive U.S. monitoring stations for the Fukushima Dai-ichi nuclear reactor accident." Journal of Environmental Radioactivity 114. PNNL-SA-93030. doi:10.1016/j.jenvrad.2011.11.007
• Keillor M.E., C.E. Aalseth, A.R. Day, L.E. Erikson, B.D. Glasgow, E.W. Hoppe, and T.W. Hossbach, et al. 2012. "A Germanium Array for Sample Measurements: Recent Results and New Analysis Methods." In 2012 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies, September 18-20, 2012, Albuquerque, NM, II, 635-642. Washington D.C.:National Nuclear Security Administration. PNNL-SA-89692.
• Schubert A.G., E. Aguayo, F.T. Avignone, C. Zhang, H.O. Back, A.S. Barabash, and M. Bergevin, et al. 2012. "The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76." In 91th Particles and Nuclei International Conference (PANIC11), July 24-29, 2011, Cambridge, Massachusetts. AIP Conference Proceedings, edited by SG Steadman, GSF Stephans and FE Taylor, 1441, Article No. 480. Melville, New York:American Institute of Physics. PNNL-SA-101296. doi:10.1063/1.3700592

2011

• Aalseth C.E., A.R. Day, D.A. Haas, E.W. Hoppe, B.J. Hyronimus, M.E. Keillor, and E.K. Mace, et al. 2011. "Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty." Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment 652, no. 1:58-61. PNNL-SA-73256. doi:10.1016/j.nima.2010.09.135
• Aalseth C.E., E. Aguayo Navarrete, M. Amman, F.T. Avignone, H.O. Back, X. Bai, and A.S. Barabash, et al. 2011. "The Majorana Experiment." Nuclear Physics. B, Proceedings Supplement 217, no. 1:44-46. PNNL-SA-87226. doi:10.1016/j.nuclphysbps.2011.04.063
• Aalseth C.E., M. Amman, F.T. Avignone, H.O. Back, A.S. Barabash, P.S. Barbeau, and M. Bergevin, et al. 2011. "Astroparticle physics with a customized low-background broad energy Germanium detector." Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment 652, no. 1:692-695. PNNL-SA-87163. doi:10.1016/j.nima.2010.08.100
• Aalseth C.E., P. Barbeau, J. Colaresi, J.I. Collar, J. Diaz Leon, J.E. Fast, and N. Fields, et al. 2011. "Search for an Annual Modulation in a p-Type Point Contact Germanium Dark Matter Detector." Physical Review Letters 107, no. 14:Article No. 141301. PNNL-SA-81169. doi:10.1103/PhysRevLett.107.141301
• Aalseth C.E., P. Barbeau, N.S. Bowden, B. Cabrera-Palmer, J. Colaresi, J.I. Collar, and S. Dazeley, et al. 2011. "Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector." Physical Review Letters 106, no. 13:Article No. 131301. PNNL-SA-71421. doi:10.1103/PhysRevLett.106.131301
• Aguayo E., J.E. Fast, E.W. Hoppe, M.E. Keillor, J.D. Kephart, R.T. Kouzes, and B.D. LaFerriere, et al. 2011. "The Majorana Demonstrator." In Proceedings of the Meeting of the Division of Particles and Fields of the American Physical Society (DPF-2011), August 9-13, 2011, Providence, Rhode Island, edited by T Speer. College Park, Maryland:American Physical Society. PNNL-SA-102130.
• Aguayo Navarrete E., F.T. Avignone, H.O. Back, A.S. Barabash, M. Bergevin, M. Bergevin, and F. Bertrand, et al. 2011. "The MAJORANA Experiment." In AIP Conference Proceedings: Workshop on Calculation of Double-Beta-Decay Matrix Elements (MEDEX `11), June 13-16, 2011, Prague, Czech Republic, 1417. Melville, New York:American Institute of Physics. PNNL-SA-87225. doi:10.1063/1.3671044
• Egnatuk C.M., J. Lowrey, S. Biegalski, T.W. Bowyer, D.A. Haas, J.L. Orrell, and V.T. Woods, et al. 2011. "Production of 37Ar in The University of Texas TRIGA reactor facility." Journal of Radioanalytical and Nuclear Chemistry 291, no. 1:257-260. PNNL-SA-78278. doi:10.1007/s10967-011-1254-0
• Keillor M.E., C.E. Aalseth, A.R. Day, L.E. Erikson, B.D. Glasgow, E.W. Hoppe, and T.W. Hossbach, et al. 2011. "A New Gamma-Gamma Coincidence Analysis System." In 2011 Monitoring Research Review, September 13-15, 2011, Tucson, AZ, 708-714. Washington:National Nuclear Security Administration. PNNL-SA-81425.
• Keillor M.E., C.E. Aalseth, A.R. Day, L.E. Erikson, J.E. Fast, B.D. Glasgow, and E.W. Hoppe, et al. 2011. "CASCADES: An Ultra-Low-Background Germanium Crystal Array at Pacific Northwest National Laboratory." In AIP Conference Proceedings: Applications of Nuclear Techniques: Eleventh International Conference, June12-18, 2011, Crete, Greece., 1412, 208-215. Melville, New York:American Institute of Physics. PNNL-SA-81237. doi:10.1063/1.3665316
• Mizouni L.K., C.E. Aalseth, F.T. Avignone, L.E. Erikson, T.W. Hossbach, M.E. Keillor, and J.L. Orrell. 2011. "Search for 2vßß decay of 130Te to the first excited state of 130Xe with an ultra-low-background germanium crystal array." In 11th International Conference on Applications of Nuclear Techniques, June 12-18, 2011, Crete, Greece. AIP Conference Proceedings, 1412, 232-239. College Park, Maryland:American Institute of Physics. PNNL-SA-80967. doi:10.1063/1.3665319

2010

• Aalseth C.E., M. Amman, J.F. Amsbaugh, F.T. Avignone, H.O. Back, A. Barabash, and P.S. Barbeau, et al. 2010. "The MAJORANA Project." Journal of Physics: Conference Series 203, no. 1:Article No. 012057. PNNL-SA-102766. doi:10.1088/1742-6596/203/1/012057
• Keillor M.E., C.E. Aalseth, A.R. Day, L.E. Erikson, J.E. Fast, B.D. Glasgow, and E.W. Hoppe, et al. 2010. "INITIAL RESULTS: AN ULTRA-LOW-BACKGROUND GERMANIUM CRYSTAL ARRAY." In Proceedings of the 2010 Monitoring Research Review - Ground-Based Nuclear Explosion Monitoring Technologies, September 21-23, 2010, Orlando, FL, II, 610-618. Washington Dc:National Nuclear Security Administration. PNNL-SA-74767.

2009

• Aalseth C.E., A.R. Day, E.W. Hoppe, T.W. Hossbach, B.J. Hyronimus, M.E. Keillor, and K.E. Litke, et al. 2009. "Design and construction of a low-background, internal-source proportional counter." Journal of Radioanalytical and Nuclear Chemistry 282, no. 1:233-237. PNNL-SA-69799. doi:10.1007/s10967-009-0258-5
• Aalseth C.E., M. Amman, J.F. Amsbaugh, F.T. Avignone, H.O. Back, A. Barabash, and P. Barbeau, et al. 2009. "The MAJORANA DEMONSTRATOR: An R&D project towards a tonne-scale germanium neutrinoless double-beta decay search." In 10th Conference on the Intersections of Particle and Nuclear Physics: AIP Conference Proceedings, edited by ML Marshak, 1182, 88-91. Melville, New York:American Institute of Physics. PNNL-SA-67240. doi:10.1063/1.3293951
• Cooper M.W., J.H. Ely, D.A. Haas, J.C. Hayes, M.E. Keillor, and J.I. McIntyre. 2009. "RADIATION DETECTION CHALLENGES." In Monitoring Research Review (MRR 2009) Ground-Based Nuclear Explosion Monitoring Technologies, September 21-23, 2009, Tucson, Arizona, 624-630. Los Alamos, New Mexico:Los Alamos National Laboratory. PNNL-SA-67913.
• Elliott S., C.E. Aalseth, M. Akashi-Ronquest, M. Amman, J.F. Amsbaugh, F.T. Avignone, and H.O. Back, et al. 2009. "The MAJORANA Project." Journal of Physics: Conference Series 173, no. 1:Article No. 012007. PNNL-SA-102132. doi:10.1088/1742-6596/173/1/012007
• Guiseppe V., C.E. Aalseth, M. Akashi-Ronquest, M. Ammann, J.F. Amsbaugh, F.T. Avignone, and H.O. Back, et al. 2009. "The MAJORANA Neutrinoless Double-Beta Decay Experiment." In IEEE Nuclear Science Symposium Conference Record (NSS '08), October 19-25, 2008, Dresden, Germany, 1793-1798. Piscataway, New Jersey:IEEE. PNNL-SA-63781. doi:10.1109/NSSMIC.2008.4774740
• Keillor M.E., C.E. Aalseth, A.R. Day, J.E. Fast, E.W. Hoppe, B.J. Hyronimus, and T.W. Hossbach, et al. 2009. "ASSEMBLY AND INITIAL RESULTS: AN ULTRA-LOW-BACKGROUND GERMANIUM CRYSTAL ARRAY FOR HIGH EFFICIENCY AND COINCIDENCE MEASUREMENTS." In Proceedings of the 31st Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies, September 21-23, Tucson, AZ, 667-676. Washington, Dc:National Nuclear Security Administration. PNNL-SA-68038.
• Keillor M.E., C.E. Aalseth, A.R. Day, J.E. Fast, E.W. Hoppe, B.J. Hyronimus, and T.W. Hossbach, et al. 2009. "Design and Construction of an Ultra-Low-Background 14 Crystal Germanium Array for High Efficiency and Coincidence Measurements." Journal of Radioanalytical and Nuclear Chemistry 282, no. 3:703-708. PNNL-SA-67535.
• Keillor M.E., M.W. Cooper, J.C. Hayes, and J.I. McIntyre. 2009. "Degradation of 81 keV 133Xe Gamma-Rays into the 31 keV X-Ray Peak in CsI Scintillators." Journal of Radioanalytical and Nuclear Chemistry 282, no. 3:699-702. PNNL-SA-65756.
• Miley H.S., C.E. Aalseth, T.W. Bowyer, J.E. Fast, J.C. Hayes, E.W. Hoppe, and T.W. Hossbach, et al. 2009. "Alternative treaty monitoring approaches using ultra-low background measurement technology." Applied Radiation and Isotopes 67, no. 5:746-749. PNNL-SA-66634.

2007

• Budjas D., W. Hampel, M. Heisel, G. Heusser, M. Keillor, M. Laubenstein, and W. Maneschg, et al. 2007. "Highly Sensitive Gamma-Spectrometers of Gerda for Material Screening: Part 2." In Proceedings of the XIV International Baksan School "Particles and Cosmology" 16-21 April 2007, Baksan Valley, Russian Federation, 233-238. Moscow:Institute for Nuclear Research of the Russian Academy of Sciences. PNNL-SA-57611.