2023
DOI: 10.3390/surfaces6030018
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Spectra of Low Energy Electrons Emitted in the Interaction of Slow Ne+ Ions with Mg Surfaces

Abstract: 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 ex… Show more

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Cited by 2 publications
(9 citation statements)
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“…Therefore, the spectrum of electrons emitted by decay of plasmons have a maximum energy E m = E pl − ϕ, where E pl is the plasmon energy and ϕ is the metal work function. Our recent experimental investigations on potential excitation of plasmons are consistent with the excitation of either the predicted monopole or the multipole surface plasmons [13,14]. So far, this latter collective excitation has not been considered in theoretical calculations.…”
Section: Introductionsupporting
confidence: 78%
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“…Therefore, the spectrum of electrons emitted by decay of plasmons have a maximum energy E m = E pl − ϕ, where E pl is the plasmon energy and ϕ is the metal work function. Our recent experimental investigations on potential excitation of plasmons are consistent with the excitation of either the predicted monopole or the multipole surface plasmons [13,14]. So far, this latter collective excitation has not been considered in theoretical calculations.…”
Section: Introductionsupporting
confidence: 78%
“…The spectrometer had an acceptance angle of 1.5 • and was operated at a pass energy of 50 eV and a constant transmission function over the measured energy range. The energy scale of emitted electrons was calibrated by the high energy edge of the LVV Auger spectrum of Mg and by comparing the energy of electrons from autoionization lines of Ne ** 2p 4 3s 2 , with published value [13]. The UHV chamber was shielded with µ-metal to reduce the effect of stray magnetic fields on the trajectory of emitted low energy electrons.…”
Section: Methodsmentioning
confidence: 99%
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