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An analytical energy-loss line shape for high depth resolution in ion-beam analysis
- Source :
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:92-96
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- The knowledge of the energy loss distribution in a single ion atom collision is a prerequisite for subnanometric resolution in depthprofiling techniques such as nuclear reaction profiling NRP and medium energy ion scattering MEIS . The usual Gaussian approximation specified by the stopping power and energy straggling is not valid for near surface regions of solids, where subnanometric or monolayer resolution can be achieved. In this work we propose an analytical formula for the line shape to replace the usual Gaussian distribution widely used in low resolution ion beam analysis. Furthermore, we provide a simple physical method to derive the corresponding shape parameters. We also present a comparison with full coupled channel calculations as well as with experimental data at nearly single collision conditions
- Subjects :
- Nuclear and High Energy Physics
Work (thermodynamics)
Surface science
Ion beam analysis
Chemistry
Gaussian
Resolution (electron density)
Large scale facilities for research with photons neutrons and ions
Collision
symbols.namesake
symbols
Stopping power (particle radiation)
Atomic physics
Instrumentation
Energy (signal processing)
Subjects
Details
- ISSN :
- 0168583X
- Volume :
- 256
- Database :
- OpenAIRE
- Journal :
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
- Accession number :
- edsair.doi.dedup.....23b95b26de6680ba34c1223214f208b1