Search Results - "Steiner, Robert E."

A combined TEVA-DGA chromatography chemistry for purifying Pu, Am, and Np from U materials by Engel, John R., Buettner, Jacob E., Denton, Joanna S., Steiner, Robert E., Kayzar-Boggs, Theresa M.

“…We present a combined TEVA-DGA chromatography chemistry to purify single-element fractions of Pu, Am, and Np from bulk (mg-level) U materials. Plutonium and Np…”
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International interlaboratory compilation of trace element concentrations in the CUP-2 uranium ore concentrate standard by Denton, Joanna S., Bostick, Debra A., Boulyga, Sergei F., Cunningham, J. Alan, Dimayuga, Ike, Hexel, Cole R., Hiess, Joe, Jovanovic, Slobodan V., Kaye, Philip, Kell, Tara, Kelly, Fiona, Kinman, William, Kiser, Stephen, Lindvall, Rachel E., Macsik, Zsuzsanna, Manard, Benjamin T., Mayer, Klaus, Mercier, Jean-Francois, Samuleev, Pavel, Saull, Patrick R. B., Shi, Youqing, Steiner, Robert. E., Ticknor, Brian W., Totland, Marina, Varga, Zsolt, Wallenius, Maria, Wylie, E. Miller

“…A nuclear forensics investigation involving a uranium ore concentrate relies on accurate and precise analysis of impurities. Analytical data defensibility…”
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Identification, isolation, and characterization of a novel type of Fukushima-derived microparticle by Macsik, Zsuzsanna, Hudston, Lisa A., Wurth, Kimberly N., Meininger, Daniel, Jesinghaus, Christian, Tenner, Travis J., Naes, Benjamin E., Boswell, Mitzi, Shozugawa, Katsumi, LaMont, Stephen P., Steiner, Robert E., Steinhauser, Georg

“…In the course of the Fukushima nuclear accident, radionuclides were released in various forms, including so-called radiocesium-bearing microparticles (CsMP)…”
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Polyatomic interferences on high precision uranium isotope ratio measurements by MC-ICP-MS: applications to environmental sampling for nuclear safeguards by Pollington, Anthony D., Kinman, William S., Hanson, Susan K., Steiner, Robert E.

“…Modern mass spectrometry and separation techniques have made measurement of major uranium isotope ratios a routine task; however accurate and precise…”
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Application of ATONA Amplifiers to the Measurement of Uranium Isotopic Ratios by Thermal Ionization Mass Spectrometry by Reinhard, Andrew A., Inglis, Jeremy D., Singleton, Michael J., Kara, Azim H., Steiner, Robert E., LaMont, Stephen P.

“…Uranium isotopic composition can provide valuable information about the history and provenance of a nuclear material; therefore, uranium isotopic analyses are…”
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Evaluation of the Homogeneity of the Uranium Isotope Composition of NIST SRM 610/611 by MC-ICP-MS, MC-TIMS, and SIMS by Mindy M. Zimmer, William S. Kinman, Azim H. Kara, Robert E. Steiner

“…As analytical and microanalytical applications employing uranium isotope ratios increase, so does the need for reliable reference materials, particularly in…”
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An introduction to the significance of sample size in particle analyses for nuclear forensics and radiological investigations by Inglis, Jeremy D., Samperton, Kyle M., Reinhard, Andrew A., Tenner, Travis, Steiner, Robert E., Lamont, Stephen P.

“…Particulate isotopic analysis in nuclear forensics has developed rapidly during the past two decades due to technical advances in determining the isotopic…”
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Radioanalytical method for the separation of trace plutonium and neptunium from uranium by Macsik, Zsuzsanna, LaMont, Stephen P., Maassen, Joel R., Fisher, Will S., Inglis, Jeremy D., Hudston, Lisa A., Sanborn, Matthew E., Hinrichs, Kimberly A., Chaple, Ivis F., Fassbender, Michael E., Steiner, Robert E.

“…A radioanalytical method was developed for the determination of trace plutonium and neptunium in samples composed primarily of uranium. The procedure uses a…”
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A chromatography chemistry for purifying Pa from U-Nb metal alloys by Engel, John R., Denton, Joanna S., Lamont, Stephen P., Buettner, Jacob E., Chen, Christine Y., Steiner, Robert E., Kayzar-Boggs, Theresa M.

“…We present a chromatography chemistry for purifying protactinium from uranium metal alloys containing weight-percent concentrations of niobium. Niobium is…”
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Rapid response in vitro bioassay method for the determination of Pu isotopes in urine samples by Macsik, Zsuzsanna, LaMont, Stephen P., Cardon, Annelise M. R., Hudston, Lisa A., Poudel, Deepesh, Wende, Allison M., Inglis, Jeremy D., Steiner, Robert E.

“…The plutonium rapid response in vitro bioassay method described here was designed to determine 238 Pu, 239 Pu, and 240 Pu concentration in urine samples from…”
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Analysis of sub-picogram quantities of 238Pu by thermal ionization mass spectrometry by Maassen, Joel, Inglis, Jeremy D., Wende, Allison, Kayzar-Boggs, Theresa M., Steiner, Robert E., Kara, Azim

“…A multiple ion-counting total evaporation technique has been developed for precise analysis of sub-picogram (pg) quantities of 238 Pu by thermal ionization…”
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Improved methods to age-date uranium certified reference materials for nuclear forensics using the 231Pa/235U radiochronometer by Denton, Joanna S., Wende, Allison M., Kayzar-Boggs, Theresa M., Cardon, April R., Edwards, Mark A., Sanborn, Matthew E., Steiner, Robert E.

“…Improved methods employed at Los Alamos National Laboratory for 231 Pa/ 235 U radiochronometry are outlined. We present elution curves obtained during 233 Pa…”
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A multiple ion counter total evaporation (MICTE) method for precise analysis of plutonium by thermal ionization mass spectrometry by Inglis, Jeremy D., Maassen, Joel, Kara, Azim, Steiner, Robert E., Kinman, William S., Lopez, Dennis

“…This paper presents a total evaporation method for the analysis of sub-picogram quantities of Pu, utilizing an array of multiple ion counters. Data from three…”
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An improved method for uranium separation from urine for rapid bioassay by inductively coupled plasma mass spectrometry by Reinhard, Andrew A., Inglis, Jeremy D., Steiner, Robert E., LaMont, Stephen P., Cardon, April R., Wende, Allison M., Lopez, Deanna L., Roach, Jeffery L.

“…Bioassay monitoring is an important capability for any facility that works with significant amounts of radioactive material. The speed at which these analyses…”
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International cooperation in age-dating uranium standards for nuclear forensics using the 231Pa/235U radiochronometer by Denton, Joanna S., Treinen, Kerri C., Chen, Yan, Baransky, Eva, Gaffney, Amy M., Huang, Sheng-Hui, Kayzar-Boggs, Theresa M., Samperton, Kyle, Steiner, Robert E., Wende, Allison M., Williams, Ross W., Zhao, Yong-Gang

“…During 2017–2018 Los Alamos National Laboratory, Lawrence Livermore National Laboratory and the China Institute of Atomic Energy collaborated in an…”
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An interlaboratory collaboration to determine consensus 231Pa/235U model ages of a uranium certified reference material for nuclear forensics by Kayzar-Boggs, Theresa M., Treinen, Kerri C., Okubo, Ayako, Denton, Joanna S., Gaffney, Amy M., Miller, Martha M., Steiner, Robert E., Wende, Allison M., Williams, Ross W.

“…Application of the 231 Pa/ 235 U radiochronometer for nuclear forensic investigations is challenged by a lack of certified reference materials with 231 Pa/ 235…”
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A highly-enriched 244Pu reference material for nuclear safeguards and nuclear forensics measurements by Essex, Richard M., Williams, Ross W., Treinen, Kerri C., Hubert, Amélie, Humphrey, Marc A., Inglis, Jeremy D., Kinman, William S., Maassen, Joel, Peńkin, Maxim V., Steiner, Robert E.

“…A highly-enriched 244 Pu isotope dilution reference material has been prepared and characterized for metrologically traceable measurements of very small…”
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US-DOE and CIAE international cooperation in age-dating uranium standards by Treinen, Kerri C., Kinman, William S., Chen, Yan, Zhu, Liuchao, Cardon, Annelise M. R., Steiner, Robert E., Kayzar-Boggs, Theresa M., Williams, Ross W., Zhao, Yong-Gang

“…In 2014 the United States Department of Energy and the China Institute of Atomic Energy collaborated in a study measuring the model ages of uranium certified…”
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Round-robins in the area of uranium and plutonium bulk analysis of environmental samples by Pointurier, Fabien, Williams, Ross W., LaMont, Stephen P., Steiner, Robert E., Bostick, Debbie A., Olsen, Khris B., Wogman, Ned A.

“…In the framework of a collaboration between laboratories involved in bulk U and Pu analysis of environmental samples (DIF centre of the French Commissariat à…”
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A rapid isotope dilution inductively coupled plasma mass spectrometry procedure for uranium bioassay by Kinman, William S., Lamont, Stephen P., Steiner, Robert E.

“…Negative health effects of uranium taken into the human body are related to both the chemical toxicity of the metal and its radioactivity. A simple and…”
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