Venerdì, 31 Marzo, 2023 - 12:00
From free-electrons to bound electrons: attosecond science with X-ray free-electron lasers
Prof. Agostino Marinelli SLAC
Aula Seminari (RM004) – SBAI Department -Via A. Scarpa 14
Attosecond vision and X-ray vision have been attributed to several superheroes and were achieved separately in real-life thanks to groundbreaking advances in laser technology and accelerator science. In my colloquium I will describe the quest to combine attosecond and X-ray vision using the most advanced X-ray sources in the world: X-ray free-electron lasers (XFELs).
Attosecond XFELs are the subject of an intense research effort worldwide that involves large X-ray facilities, advanced plasma-based particle accelerators and cutting-edge laser technology. Our attosecond science effort at SLAC has evolved from an accelerator R&D project to a new scientific program, producing observations of coherent electronic phenomena with atomic site specificity and unprecedented temporal resolution.
In my talk will introduce the physics of XFELs and their state of the art. I will then present our results on attosecond pulse generation and its application to the observation of coherent electron dynamics in molecules. Finally, I will discuss our ongoing research efforts towards plasma-based attosecond sources, capable of combining the peak power of XFELs with the fractional bandwidth of state of the art few-cycle lasers.
For additional information:
Zoom Link: https://uniroma1.zoom.us/j/7356266604
Short Bio dello Speaker
Agostino Marinelli is an assistant professor of Photon Science and Particle Physics and Astrophysics at the SLAC National Accelerator Laboratory.
Agostino got his master degree in Engineering Sciences at Sapienza, University of Rome in 2007; then he received his PhD in physics from the University of California, Los Angeles in 2012 and moved to SLAC shortly after as a post-doctoral research associate.
He was a Panofsky Fellow from 2015 to 2019 and joined the SLAC faculty in the fall of 2019. He has been awarded of Young Investigator Free-Electron Laser Prize (International Free-Electron Laser Conference, 2015) and Frank Sacherer Prize (European Physical Society, 2015) for his activity in the field of Free Electron Lasers.
He is currently the head of the free-electron laser physics department, as well as the co-lead of the free-electron laser R&D program at SLAC. His research is focused on the physics and applications of X-ray free-electron lasers as well as ultrafast light sources based on advanced particle accelerators.