The research group for applications in molecular, biomedical, and materials (MBM) sciences works to develop experimental capabilities using the secondary sources that are driven by the uniquely powerful ELI-Beamlines lasers. The MBM group mainly develops beam lines and end stations for time-resolved photon science applications in the THz-to-hard X-ray range. This group also aims to combine different laser-driven sources (of photons and particles) for unique applications in research and development.
The MBM group is currently in an active phase of growth and procurement. This phase is expected to continue throughout 2016 and 2017, and during this time the group will also welcome national and international collaborators for user-based commissioning experiments. In ELI-Beamlines' operational phase of (2018 and on), the MBM group will mainly support user operations but will also develop its own research interests.
In particular, we are developing the following capabilities for time-resolved experiments covering the femtosecond-to-millisecond time scales:
- A multi-purpose end station for atomic, molecular, and optical (AMO) sciences and coherent diffractive imaging (CDI)
- A soft X-ray materials science station based on a time-resolved IR-to-VUV magneto-optical ellipsometer
- A modular station for hard X-ray sciences covering applications in diffraction, spectroscopy and imaging
- Advanced optical spectroscopy capabilities in the THz-to-UV range, including a setup for stimulated Raman scattering and a wide array of pump beams coupled with all experimental stations for pump probe experiments.
CDI is a technique for imaging single particles (e.g., living cells or giant viruses) by recording the diffraction pattern of a coherent beam diffracted off the sample. This type of imaging can provide molecular-to-atomic resolution of the sample structure.
Atomic, molecular and optical (AMO) sciences study fundamental processes in atoms, molecules, and complex systems. In a typical AMO experiment, an incident laser pulse excites electron dynamics in matter, which is further coupled to other electronic and nuclear degrees of freedom. The evolution of system dynamics is then probed by a second pulse.
Phase-contrast imaging techniques capture the X-ray wavefront deformation and loss of coherence caused by the object. The phase contrast and darkfield images that are obtained substantially expand on the information about the object and reveal features of it that are invisible to classical absorption-based radiography.
The use of femtosecond stimulated Raman probes should make it possible to measure the vibrational spectra of liquid, gaseous, and transparent solid state samples with femtosecond time resolution. This should be provided both as an independent beam line and as an optional add-on to the other experiments.
An end station for ultrafast pulse radiolysis using laser-driven secondary radiation sources is being developed at ELI-Beamlines. Temporal resolution of tens of femtoseconds will be made possible, pushing far below the famous "picosecond barrier" in radiolysis and experimentally revealing the time scales where primary radical products are generated from the interactions of ionizing radiation with matter.
Jakob Andreasson (Team leader)
Miroslav Kloz: Optical spectroscopy and pump beams
Eva Klimesova: AMO science and pump beams
Petr Bruza: X-ray science; Spectroscopy and imaging
Martin Precek: Pulse Radiolysis
Shirly Espinoza: VUV and optical ellipsopmetry
Olena Kulyk: AMO science and pump beams
Christopher D. Brooks: Soft X-ray materials science
Stefan Michalik (now at Diamond Light Source, UK)