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  Velocimetry of fast microscopic liquid jets by nanosecond dual-pulse laser illumination for megahertz X-ray free-electron lasers

Grünbein, M. L., Shoeman, R. L., & Doak, B. (2018). Velocimetry of fast microscopic liquid jets by nanosecond dual-pulse laser illumination for megahertz X-ray free-electron lasers. Optics Express, 26(6), 7190-7203. doi:10.1364/OE.26.007190.

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Grünbein, Marie Luise1, Author              
Shoeman, Robert L.1, Author              
Doak, Bruce1, Author              
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1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: To conduct X-ray Free-Electron Laser (XFEL) measurements at megahertz (MHz) repetition rates, sample solution must be delivered in a micron-sized liquid free-jet moving at up to 100 m/s. This exceeds by over a factor of two the jet speeds measurable with current high-speed camera techniques. Accordingly we have developed and describe herein an alternative jet velocimetry based on dual-pulse nanosecond laser illumination. Three separate implementations are described, including a small laser-diode system that is inexpensive and highly portable. We have also developed and describe analysis techniques to automatically and rapidly extract jet speed from dual-pulse images.

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Language(s): eng - English
 Dates: 2018-02-252018-01-112018-02-272018-03-09
 Publication Status: Published in print
 Pages: 14
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 Rev. Type: Peer
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Title: Optics Express
  Abbreviation : Opt Express
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 26 (6) Sequence Number: - Start / End Page: 7190 - 7203 Identifier: ISSN: 1094-4087
CoNE: https://pure.mpg.de/cone/journals/resource/954925609918