Search Results - "Riciputi, L. R"

A rapid isotope ratio analysis protocol for nuclear solid materials using nano-second laser-ablation time-of-flight ICP-MS by Bürger, S., Riciputi, L.R.

“…The analysis of the isotopic composition of nuclear or non-nuclear solid materials is performed in a variety of fields, e.g., for quality assurance in the…”
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A high efficiency cavity ion source using TIMS for nuclear forensic analysis by Bürger, S., Riciputi, L.R., Turgeon, S., Bostick, D., McBay, E., Lavelle, M.

“…Using a high efficiency cavity interfaced to a ThermoFinnigan ‘Triton’ multi-collector TIMS, a total efficiency (atoms loaded to ions detected) of up to 10%…”
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Isothermal Time-Series Determination of the Rate of Diffusion of Water in Pachuca Obsidian by Anovitz, L. M., Elam, J. M., Riciputi, L. R., Cole, D. R.

“…Friedman and Smith's (1960) article introducing an exciting, potentially precise and inexpensive method of dating obsidian artefacts has thus far failed to…”
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The Failure of Obsidian Hydration Dating: Sources, Implications, and New Directions by Anovitz, Lawrence M., Elam, J.Michael, Riciputi, Lee R., Cole, David R.

“…Obsidian hydration dating (OHD) originally promised to be a rapid, inexpensive, simple and reliable method for dating obsidian artefacts. The perceived…”
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U and Pb isotope analysis of uranium minerals by ion microprobe and the geochronology of the McArthur River and Sue Zone uranium deposits, Saskatchewan, Canada by Fayek, Mostafa, Kyser, T. Kurtis, Riciputi, Lee R

“…A method for in situ U-Pb isotopic analysis by SIMS has been developed for U minerals with a range of compositions, using an ion-yield normalizing coefficient…”
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Water in martian magmas: clues from light lithophile elements in shergottite and nakhlite pyroxenes by Lentz, R.C.F., McSween, H.Y., Ryan, J., Riciputi, L.R.

“…There is abundant geomorphic evidence that Mars once had potentially significant amounts of water on its surface. Bulk Martian meteorites are curiously dry,…”
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THE APPLICATION OF HRTEM TECHNIQUES AND NANOSIMS TO CHEMICALLY AND ISOTOPICALLY CHARACTERIZE GEOBACTER SULFURREDUCENS SURFACES by Fayek, M., Utsunomiya, S., Pfiffner, S. M., White, D. C., Riciputi, L. R., Ewing, R. C., Anovitz, L. M., Stadermann, F. J.

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Determination of impurities in uranium matrices by time-of-flight ICP-MS using matrix-matched method by Bürger, S., Riciputi, L. R., Bostick, D. A.

“…The analysis of impurities in uranium matrices is performed in a variety of fields, e.g., for quality control in the production stream converting uranium ores…”
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Geochemical evidence for magmatic water within Mars from pyroxenes in the Shergotty meteorite by McSween, Harry Y, Grove, Timothy L, Lentz, Rachel C. F, Dann, Jesse C, Holzheid, Astrid H, Riciputi, Lee R, Ryan, Jeffrey G

“…Observations of martian surface morphology have been used to argue that an ancient ocean once existed on Mars. It has been thought that significant quantities…”
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Studies of corrosion in power plant boiler tubes by measurement of oxygen isotopes and trace elements using secondary-ion mass spectrometry by Cole, David R., Riciputi, Lee R., Wesolowski, David J., Paterson, Bruce A., Fortier, Steven M.

“…Recent advances in secondary ionization mass spectrometry (SIMS) techniques allow the resolution of differences in the natural abundances of the isotopes of…”
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Sulfur isotope microanalysis of sphalerite by SIMS: constraints on the genesis of Mississippi valley-type mineralization, from the Mascot-Jefferson City district, East Tennessee by Peevler, Janna, Fayek, Mostafa, Misra, Kula C, Riciputi, Lee R

“…The Mascot-Jefferson City (MJC) district is the most productive zinc district in East Tennessee. The deposits are of Mississippi Valley-type (MVT), hosted by…”
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The use of HRTEM techniques and the NanoSIMS to chemically and isotopically characterize Geobacter sulfurreducens surfaces by Fayek, M, Utsunomiya, S, Pfiffner, S. M, White, D. C, Riciputi, L. R, Ewing, R. C, Anovitz, Lawrence M, Stadermann, F. J

“…The ion-imaging capabilities of nanoscale secondary-ion mass spectrometry (NanoSIMS) and advanced high-resolution TEM have been combined in order to…”
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Short-Lived Oxygen Diffusion During Hot, Deep-Seated Meteoric Alteration of Anorthosite by Mora, Claudia I., Riciputi, Lee R., Cole, David R.

“…Heterogeneous oxygen isotope compositions of plagioclase from the Boehls Butte anorthosite include some of the most oxygen-18-depleted values (to -16 per mil)…”
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Isotope ratio analysis of actinides, fission products, and geolocators by high-efficiency multi-collector thermal ionization mass spectrometry by Bürger, S., Riciputi, L.R., Bostick, D.A., Turgeon, S., McBay, E.H., Lavelle, M.

“…A ThermoFisher “Triton” multi-collector thermal ionization mass spectrometer was evaluated for trace and ultra-trace level isotope ratio analysis of actinides,…”
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Analysis for rare earth elements in silicates by ion microprobe using doubly-charged ions by Riciputi, Lee R, Christie, W. H, Cole, David R, Rosseel, Thomas M

“…A study developed a method for measuring rare earth element (REE) concentrations in silicates that used a Cameca ims-4f ion microprobe and doubly-charged,…”
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Measurement of light stable isotope ratios by SIMS:: Matrix effects for oxygen, carbon, and sulfur isotopes in minerals by Riciputi, Lee R, Paterson, Bruce A, Ripperdan, Robert L

“…Mass bias occurring during analysis of the light stable isotopes of oxygen, carbon, and sulfur in geological materials by secondary ionization mass…”
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Obsidian Diffusion Dating by Secondary Ion Mass Spectrometry: A Test using Results from Mound 65, Chalco, Mexico by Riciputi, Lee R., Elam, J.Michael, Anovitz, Lawrence M., Cole, David R.

“…Secondary ion mass spectrometry (SIMS) was used to measure hydrogen and other elemental concentrations as a function of depth in ten obsidian artifacts…”
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Oxygen isotope ratios in authigenic magnetites from the Belden Formation, Colorado by RIPPERDAN, R. L, RICIPUTI, L. R, COLE, D. R, ELMORE, R. D, BANERJEE, S, ENGEL, M. H

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A new technique for determining equilibrium hydrogen isotope fractionation factors using the ion microprobe: application to the epidote-water system by Chacko, Thomas, Riciputi, R, Cole, R, Horita, Juske

“…We have developed a new method for determining equilibrium hydrogen isotope fractionation factors between hydrous minerals and water. In contrast to…”
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Modified sulfur isotopic compositions of sulfides in the nakhlites and Chassigny by Greenwood, James P., Riciputi, Lee R., McSween, Harry Y., Taylor, Lawrence A.

“…Variable sulfur isotopic ratios of sulfide minerals in the nakhlites and Chassigny have been measured by ion microprobe. The ranges and means of δ 34S values…”
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