Reconstruction of lateral coherence and 2D emittance in plasma betatron X-ray sources

Autor: Alessandro Curcio, Alessandro Cianchi, Gemma Costa, Alessio Del Dotto, Francesco Demurtas, Massimo Ferrario, Maria Dolores Rodríguez Frías, Mario Galletti, José Antonio Pérez-Hernández, Giancarlo Gatti
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Druh dokumentu: article
ISSN: 2045-2322
DOI: 10.1038/s41598-024-52231-z
Popis: Abstract X-ray sources have a strong social impact, being implemented for biomedical research, material and environmental sciences. Nowadays, compact and accessible sources are made using lasers. We report evidence of nontrivial spectral-angular correlations in a laser-driven betatron X-ray source. Furthermore, by angularly-resolved spectral measurements, we detect the signature of spatial phase modulations by the electron trajectories. This allows the lateral coherence function to be retrieved, leading to the evaluation of the coherence area of the source, determining its brightness. Finally, the proposed methodology allows the unprecedented reconstruction of the size of the X-ray source and the electron beam emittance in the two main emission planes in a single shot. This information will be of fundamental interest for user applications of new radiation sources.
Databáze: Directory of Open Access Journals
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