Apply controlled helium-shell evaporation to neutral dopants

Demonstrate whether controlled scattering of helium nanodroplets in a separate helium-filled scattering cell can shrink or completely evaporate the helium shell surrounding embedded neutral dopant species.

Background

The paper discusses controlled scattering of helium nanodroplets doped with charged species in a separate helium-filled scattering cell as an approach for shrinking or completely evaporating the helium shell surrounding an embedded molecule or cluster. Removing this shell could reduce multiple inelastic electron–helium scattering in photoelectron spectroscopy.

Although the method has been demonstrated for charged dopants, its applicability to helium nanodroplets doped with neutral species is explicitly unresolved. Establishing this would provide an alternative means of minimizing electron-scattering effects while retaining larger dopant complexes in helium nanodroplets.

References

Recently, controlled scattering of He nanodroplets doped with charged species in a separate He-filled scattering cell was shown to shrink or completely evaporate the He shell that hosts the dopant molecule or cluster. Whether this method can be applied to He nanodroplets doped with neutral species remains to be demonstrated.

— Multiple photoelectron inelastic scattering in large He nanodroplets  (2610.12077 - Scheel et al., 8 Oct 2026) in Section “Conclusions and outlook”