Attosecond and few-femtosecond resolved ultrafast measurements with X-rays

Jon Marangos

Extreme Light Consortium & Imperial College, London, UK

We will discuss the importance and challenges of measuring ultrafast dynamics at the few-femtosecond to attosecond timescale in electronically excited systems. The possibilities to do this using either X-ray free electron lasers (XFELS) or high order harmonic generation (HHG) will be introduced. Recent examples of measuring ultrafast electronic dynamics of suddenly ionized cations using the LCLS will be described.

The first examples of true attosecond science with XFELs, using the XLEAP mode at LCLS, will be discussed. Next, we will turn to a discussion of the complementary HHG technology for generating soft X-ray attosecond pulses. An example of measuring exciton dynamics in an organic semiconductor will be presented. Recent results on HHG in a liquid will be presented and how this gives access to the electron scattering cross-sections within a bulk liquid, important to biomedical applications, will be discussed.

Date: September 15, 2021

Time: 16:30

Location: ZOOM Platform Meeting

ID: 847 9143 4136

Access code: 560450

Hosted by: Fernando Martín (Química-UAM)

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