Results 161 to 170 of about 1,251,014 (199)

Quantitative micro-PIXE analysis of Yanzhuang meteorite

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1995
Abstract Yanzhuang H6 chondrite is the most heavily shocked, severely reheated, partly melted and recrystallized meteorite formed in the environment of microgravity, high vacuum and ultralow temperature of the space. It is consequently the most valuable specimen for microgravity research on the mechanism of crystallization of FeNi alloy in space ...
Xiankang Wu, Jieqing Zhu, Zhaohui Li
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Micro-PIXE Analysis of Trace Elements in Sulfides

AIP Conference Proceedings, 2003
Micro‐scale Proton‐induced X‐ray Emission (PIXE) of trace elements (TE) in sulfides provides insights into geologic processes including magmatic system evolution, ore forming events, and fluid‐flow processes. The Los Alamos nuclear microprobe was used to determine TE concentrations and ratios in sulfides from diverse geologic environments including ...
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Localization and quantification of Pb and nutrients in Typha latifolia by micro-PIXE

Metallomics, 2012
Typha latifolia is a plant species widely used for phytoremediation. Accumulation, localization and distribution of Pb and mineral nutrients were investigated in roots, rhizomes and leaves of Typha latifolia grown at 0, 50, 100 and 250 μM Pb concentrations in a pot experiment under controlled conditions. Bulk elemental concentrations were determined by
Lyudmila, Lyubenova, Paula, Pongrac, Katarina, Vogel-Mikuš, Gašper Kukec, Mezek, Primož, Vavpetič, Nataša, Grlj, Peter, Kump, Marijan, Nečemer, Marjana, Regvar, Primož, Pelicon, Peter, Schröder   +10 more
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Strontium depth distribution in human bone measured by micro-PIXE

X-Ray Spectrometry, 2009
<p>Strontium is naturally present in human bone, where it may exert beneficial or detrimental health effects depending on its concentration. The way strontium influences bone health and the concentrations at which the beneficial/detrimental health effects of strontium become important are still unknown, due partly to the difficulty of assessing ...
David R. Chettle, Ana Pejović-Milić, R. Butler, G. de Silveira, J. L. Campbell, Mariangela Zamburlini   +5 more
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Characterization of Dyrrhachium silver coins by micro-PIXE method

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2000
Abstract Ancient silver coins (drachms) issued by the Greek city Dyrrhachium during 68–43 years BC were analysed non-destructively by micro-PIXE method. The selected 27 drachms, including four imitations, belong to the numismatic collection of the Hungarian National Museum (HNM).
I Uzonyi, R Bugoi, A Sasianu, Á.Z Kiss, B Constantinescu, M Torbágyi   +5 more
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Micro-PIXE studies of char populations in northern Canada

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999
Abstract Micro-PIXE analysis of trace elements in otoliths has been used as the basis for several projects on char, a fish that is important for aboriginal subsistence fisheries in Arctic Canada. Life-history patterns were originally inferred from micro-PIXE line scans of Sr distribution.
J.L Campbell, J.A Babaluk, N.M Halden, A.H Kristofferson, J.A Maxwell, S.R Mejia, J.D Reist, W.J Teesdale   +7 more
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Micro-PIXE measurements in meteorites as a source of new information

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1991
Abstract Most of the present information on the early solar system comes from the investigation of meteorites. Trace-element contents are so far known from bulk analyses, and lateral distributions are known from electron microprobe investigations of the major and minor elements.
S. Bajt, K. Traxel
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Micro-PIXE analysis of impurities in bow-tie trees

[Proceedings] 1992 Annual Report: Conference on Electrical Insulation and Dielectric Phenomena, 2003
The impurity distributions in the core, wings, and the XLPE (cross-linked polyethylene) insulation surrounding six bow-tie trees found in a 25-kV underground cable were analyzed by scanning micro-PIXE (proton induced X-ray emission) using a focused 0.75-MeV proton beam.
A. Houdayer, P.F. Hinrichsen, W.J. Teesdale, J.-L. Parpal, J.-P. Crine   +4 more
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Preliminary studies on applications of micro-PIXE to atmospheric aerosols

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
Abstract To characterize the physical and chemical properties of the individual aerosol particles during Asian dust storm in Japan, micro-PIXE technique was applied in this study. Aerosol particles were sampled in Kyoto, Japan from the middle of March to the end of April 1999. Mass concentration in Asian dust storm events was roughly 3–5 times higher
M Kasahara, C.-J Ma, T Kamiya, T Sakai
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The influence of sample roughness on the quantification of micro-PIXE results

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1990
Abstract The intensity distribution of thick target PIXE yields emerging from several model surfaces is computed as a function of photon energy and sample composition. It is found that one thin concave dip on a perfectly homogeneous glass sample can cause changes in intensity distribution of low energy characteristic X-ray lines of 100% or more ...
I. Orlić, F. Van Langevelde, R.D. Vis
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