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Description
The fourth-generation synchrotron at LNLS/Sirius delivers low- to high-energy X-rays with high photon flux, enabling high-resolution 3D tomography within seconds when combined with advanced detectors. The MOGNO beamline at the Brazilian Synchrotron Light Laboratory (LNLS/Sirius), located at CNPEM [1], provides nano- to micrometer-scale computed tomography, focusing on multiscale analysis including zoom tomography with ~200 nm resolution and 4D imaging through in situ experiments with time-resolution on the order a few seconds.
Designed to be flexible, it accommodates diverse sample environments and contributes to cutting-edge research in materials and energy sciences. MOGNO operates at three energies (22, 39, 67 keV) with high flux for fast imaging. Applications include the study of rocks and porous media, highly relevant to the oil industry—one of Brazil’s economic pillars – which also invests in CO₂ storage and capture.
Within this context, current efforts focus on integrating micro-tomography imaging with complementary techniques to elucidate the physicochemical behavior of porous materials, particularly fluid–solid interactions and transport processes at the pore scale. Nuclear Magnetic Resonance (NMR) techniques play a central role in porous media analysis, both in laboratory studies and in situ applications. NMR enables fluid characterization and provides morphological information such as pore-size distribution and connectivity. In addition, wettability and magnetic surface relaxivity, parameters that arise from rock mineralogy, affect relaxation time values and provide further insight into the properties of porous media [2].
The integration of zoom tomography with NMR therefore represents an innovative framework for investigating porous media under both static and dynamic conditions. In this work, we present preliminary applications of synchrotron X-ray tomography to simulate NMR signals in porous media and evaluate their impact on the estimation of magnetic surface relaxivity, as well as the development of an NMR system in partnership with FIT (Fine Instrument Technology - Brazil) [3] to be integrated at the MOGNO beamline for in situ experiments.
| References | [1] Archilha, N. L et al. (2022, December). MOGNO, the nano and microtomography beamline at Sirius, the Brazilian synchrotron light source. In Journal of Physics: Conference Series (Vol. 2380, No. 1, p. 012123). IOP Publishing. [2] Lucas-Oliveira, E., Araujo-Ferreira, A. G., Trevizan, W. A., dos Santos, B. C. C., & Bonagamba, T. J. (2020). Sandstone surface relaxivity determined by NMR T2 distribution and digital rock simulation for permeability evaluation. Journal of Petroleum Science and Engineering, 193, 107400. [3] https://fitinstrument.com/?page_id=509&lang=en |
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| Country | Brazil |
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