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Studies of ultrafast dynamics in substrate-free nanoparticles at ELI using Timepix3 optical camera

  • We present a novel application of the Timepix3 optical camera (Tpx3Cam) for investigating ultrafast dynamics in substrate-free nanoparticles at the Extreme Light Infrastructure European Research Infrastructure Consortium (ELI ERIC). The camera, integrated into an ion imaging system based on a micro-channel plate (MCP) and a fast P47 scintillator, enables individual time-stamping of incoming ions with nanosecond timing precision and high spatial resolution. The detector successfully captured laser-induced ion events originating from free nanoparticles disintegrated by intense laser pulses. Owing to the broad size distribution of the nanoparticles (10-500 nm) and the variation in laser intensities within the interaction volume, the detected events range in occupancy from near-zero to extremely high, approaching the readout limits of the detector. By combining time-of-flight and velocity map imaging (VMI) techniques, detailed post-processing and analysis were performed. The results presented here focus on the performance of Tpx3Cam under high-occupancy conditions, which are of particular relevance to this study. These conditions approach the limitations imposed by the camera readout capabilities and challenge the effectiveness of standard post-processing algorithms. We investigated these limitations and associated trade-offs, and we present improved methods and algorithms designed to extract the most informative features from the data.

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Metadaten
URN:urn:nbn:de:kobv:526-opus4-20875
Publisher DOI:https://doi.org/10.48550/arXiv.2510.05855
Author:Dmitrij ŠevaevORCiD, Andrei NomerotskiORCiD, Peter ŠvihraORCiD, Keshav SishodiaORCiD, Andreas Hult RoosORCiD, Martin AlbrechtORCiD, Jakob AndreassonORCiD, Maria KrikunovaORCiD, Eva KlimešováORCiD
Parent Title (English):arXiv.org
Document Type:Preprint
Language:English
Year of Publication:2025
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Publishing Institution:Technische Hochschule Wildau
Tag:Timepix3; Tpx3Cam; VMI
Source:Ševaev, D., Nomerotski, A., Švihra, P., Sishodia, K., Roos, A. H., Albrecht, M., … Klimešová, E. (2025). Studies of ultrafast dynamics in substrate-free nanoparticles at ELI using Timepix3 optical camera. arXiv.org. doi:10.48550/arXiv.2510.05855
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 535 Licht, Infrarot- und Ultraviolettphänomene
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
Release Date:2025/10/15
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