Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Progress and Perspectives of Spectroscopic Studies at Carbon K-edge Using Novel Soft X-ray Pulsed Sources

Zeinab Ebrahimpour
* ORCID logo ,
Marcello Coreno
,
Luca Giannessi
,
Massimo Ferrario
,
Augusto Marcelli
,
Federico Nguyen
ORCID logo ,
Seyed Javad Rezvani
ORCID logo ,
Francesco Stellato
,
Fabio Villa
ORCID logo
Version 1 : Received: 9 November 2022 / Approved: 10 November 2022 / Online: 10 November 2022 (11:47:05 CET)

A peer-reviewed article of this Preprint also exists.

Ebrahimpour, Z.; Coreno, M.; Giannessi, L.; Ferrario, M.; Marcelli, A.; Nguyen, F.; Rezvani, S.J.; Stellato, F.; Villa, F. Progress and Perspectives of Spectroscopic Studies on Carbon K-Edge Using Novel Soft X-ray Pulsed Sources. Condens. Matter 2022, 7, 72. Ebrahimpour, Z.; Coreno, M.; Giannessi, L.; Ferrario, M.; Marcelli, A.; Nguyen, F.; Rezvani, S.J.; Stellato, F.; Villa, F. Progress and Perspectives of Spectroscopic Studies on Carbon K-Edge Using Novel Soft X-ray Pulsed Sources. Condens. Matter 2022, 7, 72.

Abstract

The development of novel coherent and brilliant sources, such as soft X-ray Free Electron Laser (FEL) and High Harmonic Generation (HHG) enables new ultrafast analysis of the electronic and structural dynamics of a wide variety of materials. Soft X-ray FEL delivers high brilliance beams with short pulse duration, high spatial coherence and photon energy tunability. In com-parison with FELs, HHG X-ray sources are characterized by a wide spectral bandwidth and few to sub-femtosecond pulses. The approach will lead to time-resolved reconstruction of molecular dynamics, shedding light on different photochemical pathways. The high peak brilliance of soft X-ray FELs facilitates investigations in nonlinear regime, while the broader spectral bandwidth of the HHG sources may provide the simultaneous probing of multiple components. Significant technical breakthroughs in these novel sources are under way to improve brilliance, pulse dura-tion, and to control spectral bandwidth, spot size, and energy resolution. Therefore, in the next few years, the new generation of soft X-ray sources combined with novel experimental tech-niques, new detectors, and computing capabilities will allow the study of several extremely-fast dynamics, such as vibronic dynamics. In the present review, we shortly discuss recent devel-opments in experiments, performed with soft X-ray FELs and HHG sources, operating near car-bon K-absorption edge, being a key atomic component in biosystems and soft materials. Differ-ent spectroscopy methods such as time-resolved pump-probe techniques, nonlinear spectrosco-pies and photoelectron spectroscopy studies have been addressed in an attempt of a better un-derstanding of fundamental physico-chemical processes

Keywords

Soft X-ray FEL; HHG pulses; time-resolved X-ray spectroscopy; Carbon K-edge; Conical inter-sections; EuPRAXIA@SPARC_LAB

Subject

Physical Sciences, Condensed Matter Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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