A cryogenic setup for producing and trapping nanodroplets via supersonic expansion of precooled helium gas includes a cryostat (top left), a multireflection trap, and a channel electron multiplier detector (bottom right). Selected for an Editors’ Suggestion.
From the article:
Extending the Observation Time of Charged Helium Droplets to the Minute TimescaleMatthias Veternik, Tobias Waldhütter, Lutz Schweikhard, Paul Scheier, and Elisabeth Gruber
Phys. Rev. Lett. 136, 013201 (2026)
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