Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Mariam R. Thomas"'
Autor:
Khalil J. Spencer, Floyd E. Stanley, Jung H. Rim, Ning Xu, Mariam R. Thomas, Kevin J. Kuhn, Christopher G. Worley, Holly R. Trellue, Elmer Lujan, Katherine Garduno, Lav Tandon, Donivan R. Porterfield
Publikováno v:
Forensic Science International. 273:e1-e9
Nuclear forensics techniques, including micro-XRF, gamma spectrometry, trace elemental analysis and isotopic/chronometric characterization were used to interrogate two, potentially related plutonium metal foils. These samples were submitted for analy
Autor:
Elmer Lujan, Lisa E Townsend, Lav Tandon, Kevin J. Kuhn, Alexander Martinez, Keller Ra, Lynn A. Foster, Donivan R. Porterfield, Mariam R. Thomas, Khal Spencer, Daniel S. Schwartz, Ning Xu, Lisa Michelle Colletti, Floyd E. Stanley, Benjamin L. Byerly
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 312:95-104
Thorough physical and chemical characterization of plutonium–beryllium (PuBe) neutron sources is an important capability with applications ranging from material accountancy to nuclear forensics. Characterization of PuBe sources is not trivial owing
Autor:
Floyd E. Stanley, Mariam R. Thomas, Khalil J. Spencer, Russell C. Keller, K. J. Mathew, Benjamin L. Byerly
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 311:1819-1824
Parent–progeny isotope relationships provide critical signatures in forensic efforts designed to determine the history of interdicted nuclear materials. Unfortunately, there is substantial need for new standards and QC strategies yielding confidenc
Autor:
Ning Xu, Russell C. Keller, Mariam R. Thomas, Steve Charles Myers, Jamie L. Doyle, Laurie F. Walker, Alexander Martinez, Benjamin L. Byerly, Elmer Lujan, Donivan R. Porterfield, Katherine Garduno, Lav Tandon, James Brent Fulwyler, Khalil J. Spencer, Floyd E. Stanley, Lisa Michelle Colletti, Kevin J. Kuhn, Lisa E Townsend
Publikováno v:
Talanta. 159:200-207
Nuclear forensic publications, performance tests, and research and development efforts typically target the bulk global inventory of intentionally safeguarded materials, such as plutonium (Pu) and uranium (U). Other materials, such as neptunium (Np),
Autor:
K. J. Mathew, Ross W. Williams, Joanna S. Denton, Mariam R. Thomas, Floyd E. Stanley, Tara Mastren, Adrian Nicholl, Andrew J. Gaunt, Keller Ra, Tashi Parsons-Davis, Katherine Garduno, Amy M. Gaffney, William S. Kinman, Josh Wimpenny, Theresa M. Kayzar-Boggs, Klaus Mayer, James Brent Fulwyler, R. E. Steiner, Zsolt Varga, Dana Labotka, Allison Wende, Joel R. Maassen, Jung Rim, Maria Wallenius, Richard A. Torres, Elmer Lujan, Lav Tandon, Kerri C. Treinen, Iain May, John M. Rolison, Donivan R. Porterfield, Chelsea Ottenfeld, J. D. Inglis
Publikováno v:
Analytical chemistry. 91(18)
An intercomparison of the radio-chronometric ages of four distinct plutonium-certified reference materials varying in chemical form, isotopic composition, and period of production are presented. The cross-comparison of the different 234U/238Pu, 235U/
Autor:
Jung Rim, Katherine Garduno, Ning Xu, Lisa Michelle Colletti, Kevin J. Kuhn, Donivan R. Porterfield, Mariam R. Thomas, Alexander Martinez, Benjamin L. Byerly, Elmer Lujan, Lav Tandon, Lisa E Townsend, Khal Spencer, Floyd E. Stanley, Mike Schappert
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 310:623-632
In this study, a certified plutonium metal reference material (CRM 126) with a known production history is examined using analytical methods that are commonly employed in nuclear forensics for provenancing and attribution. The measured plutonium isot
Autor:
Floyd E. Stanley, Khalil J. Spencer, Mariam R. Thomas, K. J. Mathew, Lisa P. Colletti, Lav Tandon
Publikováno v:
Analytical Methods. 8:7289-7305
Certified reference materials (CRMs) traceable to national and international safeguards database are a critical prerequisite for ensuring that nuclear measurement systems are free of systematic biases. CRMs are used to validate measurement processes
Autor:
Keller Ra, Benjamin L. Byerly, Floyd E. Stanley, Khalil J. Spencer, Patrick T. Martinez, Ning Xu, Lav Tandon, Mariam R. Thomas, A. C. Hayes-Sterbenz, James Brent Fulwyler, Michael Francis Schappert
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 307:1871-1876
This study presents a method for destructive analysis of irradiated uranium (U) targets, with a focus on collection and measurement of long-lived (t 1/2 > ~10 years) and stable fission product isotopes of ruthenium and cesium. Long-lived and stable i
Publikováno v:
Journal of the American Society for Mass Spectrometry. 27:1136-1138
Actinide isotope measurements are a critical signature capability in the modern nuclear forensics "toolbox", especially when interrogating anthropogenic constituents in real-world scenarios. Unfortunately, established methodologies, such as tradition
Autor:
Kevin John Kuhn, Galey Jean Bland, James Brent Fulwyler, Katherine Garduno, Russell C. Keller, Dylan James Klundt, Elmer J. W Lujan, Zoe Francoise Elise Mark, Kattathu Joseph Mathew, Laura Claire Ortega, Chelsea Faith Ottenfeld, Donivan R. Porterfield, Michael Sean Rearick, Jung Ho Rim, Ann Rene Schake, Michael Francis Schappert, Floyd E. Stanley, Mariam R. Thomas, Ernest Miller II Wylie, Ning Xu, Lav Tandon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a35867d59df99491b393131aa05554b
https://doi.org/10.2172/1392818
https://doi.org/10.2172/1392818