Spectra of Low Energy Electrons Emitted in the Interaction of Slow Ne+ Ions with Mg Surfaces

We measured spectra of low energy electrons emitted in the interaction of singly charged Ne+ ions with the Mg surface at incident ion energies ranging from 50 eV to 4 keV. The study examines issues related to the excitation of both the surface and the bulk plasmons of the target. We will also focus...

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Bibliographic Details
Published inSurfaces (Basel) Vol. 6; no. 3; pp. 257 - 267
Main Authors Riccardi, Pierfrancesco, Dukes, Catherine A.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2023
Subjects
Atomic energy levels
Autoionization
autoionization and Auger processes
electron emission
Electrons
Energy
Excitation
Investigations
Neon
Plasmons
Projectiles
Spectra
Spectral emittance
Spectrum analysis
surface scattering
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Summary:We measured spectra of low energy electrons emitted in the interaction of singly charged Ne+ ions with the Mg surface at incident ion energies ranging from 50 eV to 4 keV. The study examines issues related to the excitation of both the surface and the bulk plasmons of the target. We will also focus on the dynamics of the production of the singlet Ne2p4(1D)3s2 and triplet Ne2p4(3P)3s2 autoionizing states of projectiles scattered in a vacuum. The threshold behavior of the autoionization lines show that double excitation occurs simultaneously in a single scattering. The predominant excitation of the triplet state indicates the importance of charge rearrangement and the electron correlation effects during the collisional excitation.
ISSN:2571-9637
2571-9637
DOI:10.3390/surfaces6030018