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Akademický článek

Time-Resolved Chiral X-Ray Photoelectron Spectroscopy with Transiently Enhanced Atomic Site Selectivity: A Free-Electron Laser Investigation of Electronically Excited Fenchone Enantiomers

Publikováno v: Physical Review X, Vol 13, Iss 1, p 011044 (2023)

Chirality is widespread in nature, playing a fundamental role in biochemical processes and in the origin of life itself. The observation of dynamics in chiral molecules is crucial for the understanding and control of the chiral activity of photoexcit

Externí odkaz: https://doaj.org/article/08607be60e024b88bf8837847833d35b

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Akademický článek

Ultrafast relaxation of photoexcited superfluid He nanodroplets

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)

There is interest in understanding the relaxation mechanisms of photoexcitation in atoms, molecules and other complex systems. Here the authors unravel the photoexcitation and ultrafast relaxation of superfluid helium nanodroplets using a pump-probe

Externí odkaz: https://doaj.org/article/32af0c3c05074ea3b21a7ae52289fd02

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Akademický článek

Influence of an atomic resonance on the coherent control of the photoionization process

Publikováno v: Physical Review Research, Vol 4, Iss 3, p 033231 (2022)

In coherent control schemes, pathways connecting an initial and a final state can be independently controlled by manipulating the complex amplitudes of their transition matrix elements. For paths characterized by the absorption of multiple photons, t

Externí odkaz: https://doaj.org/article/5a4fb1aea1bc4027820fa0ed00067885

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Akademický článek

Diffraction imaging of light induced dynamics in xenon-doped helium nanodroplets

Publikováno v: New Journal of Physics, Vol 24, Iss 11, p 113043 (2022)

We explore the light induced dynamics in superfluid helium nanodroplets with wide-angle scattering in a pump–probe measurement scheme. The droplets are doped with xenon atoms to facilitate the ignition of a nanoplasma through irradiation with near-

Externí odkaz: https://doaj.org/article/0eac3f942c414ae186c401df05ee35db

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Akademický článek

Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)

Exploring the photoionization process leads to better understanding of the fundamental interactions between light and matter. Here the authors show the non-dipole contribution in the form of asymmetric photoelectron angular distribution from the ioni

Externí odkaz: https://doaj.org/article/0974a36532924e289466f6e23631f8be

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Akademický článek

Acetylacetone photodynamics at a seeded free-electron laser

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)

The first steps in photochemical processes involve changes in electronic and geometric structure on extremely short timescales. Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemission e

Externí odkaz: https://doaj.org/article/c44113b9e3f048fa8921c959f103ef60

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Akademický článek

Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Many photo-induced processes such as photosynthesis occur in organic molecules, but their femtosecond excited-state dynamics are difficult to track. Here, the authors exploit the element and site selectivity of soft X-ray absorption to sensitively fo

Externí odkaz: https://doaj.org/article/bf84fb1d3c9c472f9e0e1473e557de0e

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Akademický článek

Ultrafast Resonant Interatomic Coulombic Decay Induced by Quantum Fluid Dynamics

Publikováno v: Physical Review X, Vol 11, Iss 2, p 021011 (2021)

Interatomic processes play a crucial role in weakly bound complexes exposed to ionizing radiation; therefore, gaining a thorough understanding of their efficiency is of fundamental importance. Here, we directly measure the timescale of interatomic Co

Externí odkaz: https://doaj.org/article/d4ee68ea54634871b1ba75b6c4e767d8

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Akademický článek

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