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Meeting	2025 TMS Annual Meeting & Exhibition
Symposium	Characterization of Materials through High Resolution Coherent Imaging
Presentation Title	Single-Exposure Elemental Differentiation and Texture-Sensitive Phase-Retrieval Imaging with a Neutron-Counting Microchannel-Plate Detector
Author(s)	Brian Abbey, Benedicta D. Arhatari, David M. Paganin, Henry Kirkwood, Anton S. Tremsin, Timur E. Gureyev, Alexander M. Korsunsky, Winfried Kockelmann, Felix Hofmann, Eric Huwald, Shu-Yan Zhang, Joe Kelleher
On-Site Speaker (Planned)	Brian Abbey
Abstract Scope	Microchannel-plate (MCP) detectors, when used with pulsed-neutron-source instruments, enable high spatial resolution and high contrast imaging with pixel-level spectroscopic data. Our recent study showcases the potential for multimodal analysis, including total neutron cross-section spectra measurements, quantitative material differentiation imaging, and texture-sensitive in-line phase imaging, all from a single exposure using an MCP detector [1]. Operating in full-field imaging mode, the neutron transmission spectra are captured at each detector pixel, eliminating the need for energy scanning. The study demonstrates good agreement with library reference data for neutron cross-section spectra. Elemental differentiation imaging is achieved by using two selected energy bandwidths. Additionally, phase-retrieval imaging results reveal changes in texture, such as preferred grain orientation, in the sample. This approach highlights the versatility and efficiency of MCP detectors for comprehensive material analysis in neutron imaging. [1] Arhatari, B.D., et al,. Physical Review A, 2024. 109(5): p. 053529.
Proceedings Inclusion?	Planned:
Keywords	Characterization, Aluminum, Other

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