Generation of Large Vortex-Free Superfluid Helium Nanodroplets

Anatoli Ulmer, Andrea Heilrath, Björn Senfftleben, Sean M. O. O'Connell-Lopez, Björn Kruse, Lennart Seiffert, Katharina Kolatzki, Bruno Langbehn, Andreas Hoffmann, Thomas M. Baumann, Rebecca Boll, Adam S. Chatterley, Alberto De Fanis, Benjamin Erk, Swetha Erukala, Alexandra J. Feinberg, Thomas Fennel, Patrik Grychtol, Robert Hartmann, Markus IlchenManuel Izquierdo, Bennet Krebs, Markus Kuster, Tommaso Mazza, Jacobo Montaño, Georg Noffz, Daniel E. Rivas, Dieter Schlosser, Fabian Seel, Henrik Stapelfeldt, Lothar Strüder, Josef Tiggesbäumker, Hazem Yousef, Michael Zabel, Pawel Ziolkowski, Michael Meyer, Yevheniy Ovcharenko, Andrey F. Vilesov, Thomas Möller, Daniela Rupp, Rico Mayro P. Tanyag

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Abstract

Superfluid helium nanodroplets are an ideal environment for the formation of metastable, self-organized dopant nanostructures. However, the presence of vortices often hinders their formation. Here, we demonstrate the generation of vortex-free helium nanodroplets and explore the size range in which they can be produced. From x-ray diffraction images of xenon-doped droplets, we identify that single compact structures, assigned to vortex-free aggregation, prevail up to 108 atoms per droplet. This finding builds the basis for exploring the assembly of far-from-equilibrium nanostructures at low temperatures.

OriginalsprogEngelsk
Artikelnummer076002
TidsskriftPhysical Review Letters
Vol/bind131
Nummer7
Antal sider19
ISSN0031-9007
DOI
StatusUdgivet - aug. 2023

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