English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A new scheme based on (i) upcoming brilliant X-ray Free Electron Laser (FEL)sources, (ii) novel energy and angular dispersive, large-area electron imagersand (iii) the well-known photoelectron holography is elaborated that providestime-dependent three-dimensional structure determination of small to mediumsized molecules with {\AA}ngstr\"om spatial and femtosecond time resolution.Inducing molecular dynamics, wave-packet motion, dissociation, passage throughconical intersections or isomerization by a pump pulse this motion isvisualized by the X-ray FEL probe pulse launching keV photoelectrons within fewfemtoseconds from specific and well-defined sites, deep core levels ofindividual atoms, inside the molecule. On their way out the photoelectrons arediffracted generating a hologram on the detector that encodes the molecularstructure at the instant of photoionization, thus providing 'femtosecondsnapshot images of the molecule from within'. Detailed calculations in variousapproximations of increasing sophistication are presented and three-dimensionalretrieval of the spatial structure of the molecule with {\AA}ngstr\"om spatialresolution is demonstrated. Due to the large photo-absorption cross sectionsthe method extends X-ray diffraction based, time-dependent structureinvestigations envisioned at FELs to new classes of samples that are notaccessible by any other method. Among them are dilute samples in the gas phasesuch as aligned, oriented or conformer selected molecules, ultra-cold ensemblesand/or molecular or cluster objects containing mainly light atoms that do notscatter X-rays efficiently.

physical review. a, atomic, molecular, and optical physics/physical review, a, atomic, molecular, and optical physics

Imaging Molecules from Within: Ultra-fast, {\AA}ngstr\"om Scale  Structure Determination of Molecules via Photoelectron Holography using Free  Electron Lasers