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Open Access Harmonium: An Ultrafast Vacuum Ultraviolet Facility

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Harmonium is a vacuum ultraviolet (VUV) photon source built within the Lausanne Centre for Ultrafast Science (LACUS). Utilising high harmonic generation, photons from 20–110 eV are available to conduct steady-state or ultrafast photoelectron and photoion spectroscopies (PES and PIS). A pulse preserving monochromator provides either high energy resolution (70 meV) or high temporal resolution (40 fs). Three endstations have been commissioned for: a) PES of liquids; b) angular resolved PES (ARPES) of solids and; c) coincidence PES and PIS of gas phase molecules or clusters. The source has several key advantages: high repetition rate (up to 15 kHz) and high photon flux (1011 photons per second at 38 eV). The capabilities of the facility complement the Swiss ultrafast and X-ray community (SwissFEL, SLS, NCCR MUST, etc.) helping to maintain Switzerland's leading role in ultrafast science in the world.
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Keywords: PHOTOELECTRON SPECTROSCOPY; PHOTOION SPECTROSCOPY; ULTRAFAST SCIENCE

Document Type: Research Article

Affiliations: 1: Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne;, Email: [email protected] 2: Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne 3: Laboratory for Electron Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ICMP, Station 3 EPFL, CH-1015 Lausanne 4: Laboratory for Molecular Nanodynamics and Lausanne Centre for Ultrafast Science (LACUS) ISIC, Station 6 EPFL, CH-1015 Lausanne

Publication date: 01 May 2017

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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