Effect of spin polarization of Ni(110) surface on Auger neutralization for grazing scattering of He+ ions

Autor:	Helmut Winter, S. Wethekam, M. Busch, R. C. Monreal
Rok vydání:	2009
Předmět:	Nuclear and High Energy Physics Spin polarization Scattering Chemistry Projectile Thermal chemistry.chemical_element Electron Atomic physics Instrumentation Helium Auger Ion
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 267:571-574
ISSN:	0168-583X
Popis:	The survival of ions during grazing scattering of keV He+ ions from a clean Ni(1 1 0) surface is studied as function of target temperature. We observe ion fractions in the scattered beams of typically 10−3 which show a slight increase with temperature of the target surface. From computer simulations of projectile trajectories we attribute this enhancement for ion fractions to effects of thermal vibrations of lattice atoms on the survival of ions in their initial charge state. Based on concepts of Auger neutralization, we discuss the role of the spin polarization of target electrons on charge transfer. We do not find corresponding signatures in our data and conclude that in the present case of Ni(1 1 0) the spin polarization has to be small.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2a4a6e4475099e625c9f6d8395aa3fdb https://doi.org/10.1016/j.nimb.2008.11.048 Zobrazit plný text záznamu Full Text from ScienceDirect