Search Results - "Mace, Emily K"

Characterization of two extraordinary AmLi neutron sources by Mozhayev, Andrey V., Moore, Michael E., Mace, Emily K.

“…Two legacy AmLi sources have been actively used across several projects within Pacific Northwest National Laboratory, however, applicability of source…”
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Groundwater residence time estimates obscured by anthropogenic carbonate by Seltzer, Alan M, Bekaert, David V, Barry, Peter H, Durkin, Kathryn E, Mace, Emily K, Aalseth, Craig E, Zappala, Jake C, Mueller, Peter, Jurgens, Bryant, Kulongoski, Justin T

“…Groundwater is an important source of drinking and irrigation water. Dating groundwater informs its vulnerability to contamination and aids in calibrating flow…”
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Neutron detection gamma ray sensitivity criteria by Kouzes, Richard T., Ely, James H., Lintereur, Azaree T., Mace, Emily K., Stephens, Daniel L., Woodring, Mitchell L.

“…The shortage of 3He has triggered the search for effective alternative neutron detection technologies for national security and safeguards applications. Any…”
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Prediction of sub-surface 37 Ar concentrations at locations in the Northwestern United States by Fritz, Bradley G, Aalseth, Craig E, Back, Henning O, Hayes, James C, Humble, Paul H, Ivanusa, Pavlo, Mace, Emily K

“…The Comprehensive Nuclear-Test-Ban Treaty, which is intended to prevent nuclear weapon test explosions and any other nuclear explosions, includes a…”
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Prediction of sub-surface 37Ar concentrations at locations in the Northwestern United States by Fritz, Bradley G., Aalseth, Craig E., Back, Henning O., Hayes, James C., Humble, Paul H., Ivanusa, Pavlo, Mace, Emily K.

“…The Comprehensive Nuclear-Test-Ban Treaty, which is intended to prevent nuclear weapon test explosions and any other nuclear explosions, includes a…”
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Direct low-energy measurement of 37Ar and 127Xe in a radiotracer gas using low-background proportional counters by Mace, Emily K., Aalseth, Craig E., Day, Anthony R., Hoppe, Eric W., McIntyre, Justin I., Seifert, Allen, Williams, Richard M.

“…A radiotracer gas with a blend of 37 Ar and 127 Xe was created for a gas migration experiment and was characterized at Pacific Northwest National Laboratory…”
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Ar/Ar measurements using ultra-low background proportional counters by Hall, Jeter, Aalseth, Craig E, Bonicalzi, Ricco M, Brandenberger, Jill M, Day, Anthony R, Humble, Paul H, Mace, Emily K, Panisko, Mark E, Seifert, Allen

“…Age-dating groundwater and seawater using the (39)Ar/Ar ratio is an important tool to understand water mass-flow rates and mean residence time. Low-background…”
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Production and release rate of 37Ar from the UT TRIGA Mark-II research reactor by Johnson, Christine, Biegalski, Steven R., Artnak, Edward J., Moll, Ethan, Haas, Derek A., Lowrey, Justin D., Aalseth, Craig E., Seifert, Allen, Mace, Emily K., Woods, Vincent T., Humble, Paul

“…Air samples were taken at various locations around The University of Texas at Austin's TRIGA Mark II research reactor and analyzed to determine the…”
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Signatures and Methods for the Automated Nondestructive Assay of Cylinders at Uranium Enrichment Plants by Smith, L Eric, Mace, Emily K, Misner, Alex C, Shaver, Mark W

“…International Atomic Energy Agency (IAEA) inspectors currently perform periodic inspections at uranium enrichment plants to verify UF 6 cylinder enrichment…”
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Configuration and impurity quantification of AmLi sources using radiography and gamma spectroscopy by Moore, Michael E., Mozhayev, Andrey V., Wittman, Richard S., Mace, Emily K.

“…This paper presents the non-destructive assay of two AmLi sources used for detector characterization and active interrogation at PNNL, identified as MRC-101…”
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Reduction of detection limit and quantification uncertainty due to interferent by neural classification with abstention by Hagen, Alex, Jarman, Ken, Ward, Jesse, Eiden, Greg, Barinaga, Charles, Mace, Emily, Aalseth, Craig, Carado, Anthony

“…Many measurements in the physical sciences can be cast as counting experiments, where the number of occurrences of a physical phenomenon informs the prevalence…”
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Comparison of near-background concentrations of Argon-37 and Xenon-133 in the atmosphere by Fritz, B.G., Alexander, ThomasR, Bowyer, TheodoreW, Hayes, JamesC, Mace, EmilyK, Woods, VincentT

“…Radioisotopes of the noble gases xenon and argon can be important indicators of underground nuclear explosions. The Comprehensive Nuclear-Test-Ban Treaty…”
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Direct low-energy measurement of .sup.37Ar and .sup.127Xe in a radiotracer gas using low-background proportional counters by Mace, Emily K, Aalseth, Craig E, Day, Anthony R, Hoppe, Eric W, McIntyre, Justin I, Seifert, Allen, Williams, Richard M

“…A radiotracer gas with a blend of .sup.37Ar and .sup.127Xe was created for a gas migration experiment and was characterized at Pacific Northwest National…”
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Use of neural networks to analyze pulse shape data in low-background detectors by Mace, E. K., Ward, J. D., Aalseth, C. E.

“…Pacific Northwest National Laboratory has accumulated years of data with ultra-low-background proportional counters collected in an on-site shallow underground…”
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High Throughput Argon-37 Field System by Hayes, James C., Aalseth, Craig E., Alexander, Thomas R., Back, Henning O., Church, Eric D., Foxe, Michael P., Hossbach, Todd W., Humble, Paul H., Lidey, Lance S., Mace, Emily K., Meinhardt, Kerry D., Mendez, Jennifer M., McIntyre, Justin I., Overman, Cory T., Reimann, Robin, Seifert, Allen, Silvers, Kurt L., Stephenson, David E., Suarez, Reynold, Whyatt, Greg A.

“…We report Pacific Northwest National Laboratory (PNNL) has developed a unique fieldable 37Ar measurement system designed to measure 37Ar activity…”
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Groundwater residence time estimates obscured by anthropogenic carbonate by Seltzer, Alan M., Bekaert, David V., Barry, Peter H., Durkin, Kathryn E., Mace, Emily K., Aalseth, Craig E., Zappala, Jake C., Mueller, Peter, Jurgens, Bryant, Kulongoski, Justin T.

“…Determining the time scale of groundwater recharge is critical for sustainable management and often relies on measurements of radiocarbon (14C) in dissolved…”
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Automated nondestructive assay of UF6 cylinders: Detector characterization and initial measurements by Mace, E.K., Smith, L.E.

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39Ar/Ar measurements using ultra-low background proportional counters by Hall, Jeter, Aalseth, Craig E., Bonicalzi, Ricco M., Brandenberger, Jill M., Day, Anthony R., Humble, Paul H., Mace, Emily K., Panisko, Mark E., Seifert, Allen

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Noble gas migration experiment to support the detection of underground nuclear explosions by Olsen, K. B., Kirkham, R. R., Woods, V. T., Haas, D. H., Hayes, J. C., Bowyer, T. W., Mendoza, D. P., Lowrey, J. D., Lukins, C. D., Suarez, R. D., Humble, P. H., Ellefson, M. D., Ripplinger, M. D., Zhong, L., Mitroshkov, A. V., Aalseth, C. E., Prinke, A. M., Mace, E. K., McIntyre, J. I., Stewart, T. L., Mackley, R. D., Milbrath, B. D., Emer, D. F., Biegalski, S. R.

“…A Noble Gas Migration Experiment injected 127 Xe, 37 Ar, and sulfur hexafluoride into a former underground nuclear explosion shot cavity. These tracer gases…”
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Shielding concepts for low-background proportional counter arrays in surface laboratories by Aalseth, C.E., Humble, P.H., Mace, E.K., Orrell, J.L., Seifert, A., Williams, R.M.

“…Development of ultra low background gas proportional counters has made the contribution from naturally occurring radioactive isotopes – primarily α and β…”
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