Neutralization of slow multicharged ions at a clean gold surface: Total electron yields

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.2182· OSTI ID:6242138

Kurz, H; Aumayr, F; Lemell, C; Toeglhofer, K; Winter, H ^[1]

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1. Institut fuer Allgemeine Physik, Technische Universitaet Wien, Wiedner Hauptstrae 8-10/134, A-1040 Wien (Austria)

Total slow-electron ([ital E][sub [ital e]][le]60 eV) yields as derived from measured electron-emission statistics are presented for impact of various slow ([ital v][sub [ital p]][le]10[sup 5] m/s) multicharged ions (N[sup 5+],N[sup 6+],Ne[sup 5+]--Ne[sup 10+], Ar[sup 5+]--Ar[sup 16+], Kr[sup 5+]--Kr[sup 10+], Xe[sup 6+],Xe[sup 8+],Xe[sup 10+], and I[sup 16+],I[sup 20+],I[sup 23+],I[sup 25+]) on atomically clean polycrystalline gold. The experimental data can successfully be modeled by classical over-barrier-type calculations, in which way three different electron-emission processes have been identified, i.e., autoionization of the transiently neutralized projectile ( hollow atom'') on its approach toward the surface, promotion into vacuum of electrons captured by the projectile, and peeling off'' of electrons remaining bound in highly excited states until projectile impact on the surface. The relative importance of these three processes depends strongly both on projectile species and impact velocity.

• OSTI ID: 6242138
• Journal Information: Physical Review A; (United States), Vol. 48:3; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GOLD
ION COLLISIONS
ELECTRON EMISSION
ARGON IONS
AUTOIONIZATION
BEAM NEUTRALIZATION
CATIONS
KRYPTON IONS
MULTICHARGED IONS
NEON IONS
NITROGEN IONS
POLYCRYSTALS
RARE GASES
SURFACE CLEANING
YIELDS
CHARGED PARTICLES
CLEANING
COLLISIONS
CRYSTALS
ELEMENTS
EMISSION
FLUIDS
GASES
IONIZATION
IONS
METALS
NONMETALS
SURFACE FINISHING
TRANSITION ELEMENTS
665300* - Interactions Between Beams & Condensed Matter- (1992-)