Electronic stopping of hydrogen ions deduced from TOF-LEIS spectra

Autor:	S.N. Markin, M. Draxler, S.P. Chenakin, E. Steinbauer, Peter Bauer
Rok vydání:	2006
Předmět:	Nuclear and High Energy Physics Thin layers Proton Deuterium Low-energy ion scattering Hydrogen chemistry Stopping power (particle radiation) chemistry.chemical_element Atomic physics Rutherford backscattering spectrometry Instrumentation Ion
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 249:58-61
ISSN:	0168-583X
DOI:	10.1016/j.nimb.2006.03.023
Popis:	Protons and deuterons with energies 0.33–10 keV were used to obtain time-of-flight low energy ion scattering (TOF-LEIS) spectra for thin layers of Au evaporated onto a B/Si substrate. The thickness (2.4 nm) and the root-mean-square roughness (0.5 nm) of the Au layer were determined by Rutherford Backscattering Spectrometry (RBS) and Atomic Force Microscopy (AFM), respectively. To deduce the electronic stopping power, TRBS simulations were performed with d E /d x as an input parameter that was optimized to fit the experimental spectra. At energies above 3 keV, the low energy edge in the experimental spectra was widened due to the film roughness. Therefore, the simulations were carried out for the Au layer composed by two different thicknesses in order to yield optimum agreement. The resulting stopping values compare favourably to literature data. No proton/deuteron isotope effect in stopping of hydrogen ions was observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::84c0baf044cb7172036bcd6791aec515 https://doi.org/10.1016/j.nimb.2006.03.023 Zobrazit plný text záznamu Full Text from ScienceDirect