An integrated approach between neutron diffraction and elemental imaging through neutron resonance transmission imaging: preliminary results on Chinese bimetallic sword fragments

Literature Information

Publication Date 2019-10-14
DOI 10.1039/C9JA00300B
Impact Factor 4.023
Authors

Anna Fedrigo, Davide Raspino, Francesco Grazzi, Antonella Scherillo


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Abstract

In this work, neutron diffraction (ND) and neutron resonance transmission imaging (NRTI) are applied for the material characterization of composite artefacts, two bimetallic sword fragments from ancient China, in order to highlight the presence and distribution of phases and elements in the objects. The investigation was carried out at the INES beamline, a time-of-flight powder diffractometer operating at the ISIS neutron and muon source in the UK. ND was applied to identify and quantify crystalline phases, while NRTI, by means of a position sensitive n-GEM based neutron detector, provided us with the distribution of different elements in the objects. NRTI demonstrates the possibility of enhancing several elements (e.g. Fe, Cu, Ag, Sn, Sb, As, Co, Cr, In, and Mn) in neutron transmission images, achieving a spatial resolution of about 1.6 mm. Elemental mapping was performed by selecting some of the most intense neutron resonances (up to several keV) in the absorption spectra.

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Journal of Analytical Atomic Spectrometry

Journal of Analytical Atomic Spectrometry
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The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.

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