Harmonium: A pulse preserving source of monochromatic extreme ultraviolet (30–110 eV) radiation for ultrafast photoelectron spectroscopy of liquids

A tuneable repetition rate extreme ultraviolet source (Harmonium) for time resolved photoelectron spectroscopy of liquids is presented. High harmonic generation produces 30–110 eV photons, with fluxes ranging from ∼2 × 10(11) photons/s at 36 eV to ∼2 × 10(8) photons/s at 100 eV. Four different grati...

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Detalles Bibliográficos
Autores principales: Ojeda, J., Arrell, C. A., Grilj, J., Frassetto, F., Mewes, L., Zhang, H., van Mourik, F., Poletto, L., Chergui, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Crystallographic Association 2015
Materias:
SPECIAL TOPIC: SELECTED PAPERS FROM THE 3RD INTERNATIONAL CONFERENCE ON ULTRAFAST STRUCTURAL DYNAMICS
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4711517/
https://www.ncbi.nlm.nih.gov/pubmed/26798833
http://dx.doi.org/10.1063/1.4933008
Descripción
Sumario:A tuneable repetition rate extreme ultraviolet source (Harmonium) for time resolved photoelectron spectroscopy of liquids is presented. High harmonic generation produces 30–110 eV photons, with fluxes ranging from ∼2 × 10(11) photons/s at 36 eV to ∼2 × 10(8) photons/s at 100 eV. Four different gratings in a time-preserving grating monochromator provide either high energy resolution (0.2 eV) or high temporal resolution (40 fs) between 30 and 110 eV. Laser assisted photoemission was used to measure the temporal response of the system. Vibrational progressions in gas phase water were measured demonstrating the ∼0.2 eV energy resolution.

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