Resonant mjukröntgenspridning för studier av atomer och molekyler

Tidsperiod: 2015-01-01 till 2018-12-31

Projektledare: Jan-Erik Rubensson

Medarbetare: Joseph Nordgren, Joseph Ntaganira, Joseph Otieno, Marcus Agåker, Marcus Agåker Agåker

Finansiär: Vetenskapsrådet

Bidragstyp: Projektbidrag

Budget: 3 420 000 SEK

Resonant Inelastic Soft X-ray Scattering (RIXS) and related experiments are applied to atoms, molecules, liquids and molecular materials. The most important assets of the RIXS process include Ångström-scale site-specificity, access to the femtosecond time scale, and the symmetry selectivity imposed by the dipole approximation.The first research direction aims at taking benefit of high instrumental energy resolution. State-of-the-art facilities at existing synchrotron radiation facilities will be used, while own instrumentation is developed in parallel. This instrumentation includes the VERITAS beamline and the RIXS-branch of the SPECIES end station at MAX IV. In the later part of the project the focus will be on exploiting this new infrastructure.The second research direction aims at exploring resonant inelastic scattering of short intense X-ray pulses from free-electron lasers. This includes non-linear processes such as multi-photon resonances and stimulated RIXS, as well as time-resolved pump-probe experiments. Also here we will use the best present-day facilities, while we develop own instrumentation which will take advantage of in the later part of the project. The heart of this instrumentation is a 1D imaging spectrometer, developed as an in-kind contribution to the European XFEL.