Journal Article

PUBDB-2023-07133

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Laser-induced, single droplet fragmentation dynamics revealed through megahertz x-ray microscopy

Reuter, F. (Corresponding author)XFEL.EU* ; Sato, T.XFEL.EU* ; Bellucci, V.XFEL.EU*DESY* ; Birnsteinova, S.XFEL.EU* ; Deiter, C.XFEL.EU* ; Koliyadu, J. C. P.XFEL.EU*DESY* ; Letrun, R.XFEL.EU* ; Villanueva-Perez, P.Extern*XFEL.EU* ; Bean, R.XFEL.EU* ; Mancuso, A. P.Extern*XFEL.EU* ; Meents, A.CFEL*XFEL.EU*DESY* ; Vagovic, P.CFEL*XFEL.EU*DESY* ; Ohl, C.-D.Extern*XFEL.EU*

2023
American Institute of Physics Melville, USA

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Please use a persistent id in citations: doi:10.1063/5.0171225  doi:10.3204/PUBDB-2023-07133

Abstract: The fragmentation dynamics of single water droplets from laser irradiation is studied with megahertz frame rate x-ray microscopy. Owed to the nearly refraction-free and penetrating imaging technique, we could look into the interior of the droplet and reveal that two mechanisms are responsible for the initial explosive fragmentation of the droplet. First, reflection and diffraction of the laser beam at the droplet interface result in the formation of laser ray caustics that lead to non-homogeneous heating of the droplet, locally above the critical temperature. Second, homogeneous cavitation in the droplet that is likely caused from shockwaves reflected as tension waves at the acoustic soft boundaries of the droplet. Further atomization occurs in three stages, first a fine sub-micrometer sized mist forms on the side of the droplet posterior to laser incidence, then micrometer sized droplets are expelled from the rim of an expanding liquid sheet, and finally into droplets of larger size through hole and ligament formation in the thinning liquid sheet where ligaments pinch off.

Note: attaching cover image of the actual issue of Physics of Fluids

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Contributing Institute(s):

1. FS-CFEL-1 Fachgruppe BMX (FS-CFEL-1-BMX)
2. SPB/SFX (XFEL_E1_SPB/SFX)
3. The European XFEL Users (XFEL-User)
4. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)

Research Program(s):

1. 633 - Life Sciences – Building Blocks of Life: Structure and Function (POF4-633) (POF4-633)
2. MHz-TOMOSCOPY - MHz rate mulTiple prOjection X-ray MicrOSCOPY (101046448) (101046448)

Experiment(s):

1. SPB: Single Particles, clusters & Biomolecules (SASE1)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; PubMed Central ; SCOPUS ; Web of Science Core Collection

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