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Peeling graphite layer by layer reveals the charge exchange dynamics of ions inside a solid.
- Source :
-
Communications Physics . 8/12/2021, Vol. 4 Issue 1, p1-9. 9p. - Publication Year :
- 2021
-
Abstract
- Over seventy years ago, Niels Bohr described how the charge state of an atomic ion moving through a solid changes dynamically as a result of electron capture and loss processes, eventually resulting in an equilibrium charge state. Although obvious, this process has so far eluded direct experimental observation. By peeling a solid, such as graphite, layer by layer, and studying the transmission of highly charged ions through single-, bi- and trilayer graphene, we can now observe dynamical changes in ion charge states with monolayer precision. In addition we present a first-principles approach based on the virtual photon model for interparticle energy transfer to corroborate our findings. Our model that uses a Gaussian shaped dynamic polarisability rather than a spatial delta function is a major step in providing a self-consistent description for interparticle de-excitation processes at the limit of small separations. Ion-solid interactions are governed by a range of complex processes the direct experimental observation of which pose their own set of challenges. Here, the authors present a joint experimental and first-principles approach to study and describe the underlying mechanism of electron capture for an ion travelling through layers of graphene with monolayer precision. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRAPHITE
*CHARGE exchange
*ELECTRONS
*ENERGY transfer
*GRAPHENE
Subjects
Details
- Language :
- English
- ISSN :
- 23993650
- Volume :
- 4
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Communications Physics
- Publication Type :
- Academic Journal
- Accession number :
- 151935134
- Full Text :
- https://doi.org/10.1038/s42005-021-00686-1