Trajectory-dependent highly charged ion-induced electron yield from single-layer graphene

Niggas, A; Aumayr, F; Wilhelm, R A

doi:10.1088/1402-4896/ad94af

Record link:

http://hdl.handle.net/20.500.12708/205894

Title:

Trajectory-dependent highly charged ion-induced electron yield from single-layer graphene

Citation:

Niggas, A., Aumayr, F., & Wilhelm, R. A. (2025). Trajectory-dependent highly charged ion-induced electron yield from single-layer graphene. Physica Scripta, 100(1), 1–7. https://doi.org/10.1088/1402-4896/ad94af

Publisher DOI:

10.1088/1402-4896/ad94af

CatalogPlus:

AC17393983

Publication Type:

Article - Original Research Article

Language:

English

Authors:

Niggas, A
Aumayr, F
Wilhelm, R A

Organisational Unit:

E134-03 - Forschungsbereich Atomic and Plasma Physics

Journal:

Physica Scripta

ISSN:

0031-8949

Date (published):

1-Jan-2025

Number of Pages:

Publisher:

IOP PUBLISHING LTD

Peer reviewed:

Yes

Keywords:

highly charged ions; electron emission; neutralisation dynamics; ion beam spectroscopy; charge exchange; 2D materials

Abstract:

We study the neutralisation dynamics of highly charged ions by transmission through a free-standing single layer of graphene in dependence of the particle trajectory. Both the secondary electron yield and the neutralisation of the ion increase for increasing scattering angles (smaller impact parameters). This supports the current understanding of highly charged ion deexcitation, according to which the presence of an interatomic deexcitation mechanism with improved efficiency in the proximity of neighbours is necessary in addition to intraatomic radiative- and non-radiative decay pathways.

Research Areas:

Surfaces and Interfaces: 100%

Science Branch:

1030 - Physik, Astronomie: 100%

License:

CC BY 4.0