Magic Numbers in Boson 4He Clusters: The Auger Evaporation Mechanism

Spreafico, Elena; Benedek, Giorgio; Kornilov, Oleg; Toennies, Jan Peter

doi:10.3390/molecules26206244

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Magic Numbers in Boson 4He Clusters: The Auger Evaporation Mechanism

MPS-Authors

/persons/resource/persons173691

Toennies, Jan Peter
Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Spreafico, E., Benedek, G., Kornilov, O., & Toennies, J. P. (2021). Magic Numbers in Boson 4He Clusters: The Auger Evaporation Mechanism. Molecules, 26: 6244. doi:10.3390/molecules26206244.

Cite as: https://hdl.handle.net/21.11116/0000-0009-6DE0-0

Abstract

The absence of magic numbers in bosonic 4He clusters predicted by all theories since 1984 has been challenged by high-resolution matter-wave diffraction experiments. The observed magic numbers were explained in terms of enhanced growth rates of specific cluster sizes for which an additional excitation level calculated by diffusion Monte Carlo is stabilized. The present theoretical study provides an alternative explanation based on a simple independent particle model of the He clusters. Collisions between cluster atoms in excited states within the cluster lead to selective evaporation via an Auger process. The calculated magic numbers as well as the shape of the number distributions are in quite reasonable agreement with the experiments.