CHARGE-STATE DISTRIBUTIONS AFTER THE SCATTERING OF FAST HE-IONS FROM AN AL (111) SURFACE UNDER A GRAZING ANGLE OF INCIDENCE()

Authors
WINTER H SIEKMANN G ORTJOHANN HW POIZAT JC REMILLIEUX J
Citation
H. Winter et al., CHARGE-STATE DISTRIBUTIONS AFTER THE SCATTERING OF FAST HE-IONS FROM AN AL (111) SURFACE UNDER A GRAZING ANGLE OF INCIDENCE(), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 135(1-4), 1998, pp. 372-376
Citations number
14
Categorie Soggetti
Instument & Instrumentation","Nuclear Sciences & Tecnology","Physics, Atomic, Molecular & Chemical","Physics, Nuclear
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
135
Issue
1-4
Year of publication
1998
Pages
372 - 376
Database
ISI
SICI code
0168-583X(1998)135:1-4<372:CDATSO>2.0.ZU;2-F
Abstract
He+-ions with energies from 3 keV to 1.4 MeV are scattered from a clea n and flat Al (1 1 1)-surface under a grazing angle of incidence, and the scattered projectiles are analyzed with respect to charge states. We observe defined kinematic thresholds for the formation of He+ - as well as of He2+ - ions which are in agreement with the onset of a kine matically induced Auger-ionization process. Comparison of our data wit h foil transmission experiments shows a clearly different dependence o f the charge state fractions on the projectile energy (velocity). (C) 1998 Elsevier Science B.V.