Stopping and straggling of H and He in ZnO
Abstract: We present experimental and theoretical values for the energy loss of H and He ions inZinc oxide, in mean value (stopping per unit path length) and mean square value (energyloss straggling). The measurements were carried out using the Rutherford Backscatteringtechnique for (300–2000) keV H...
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_14346060_v70_n9_p_Fadanelli |
| Aporte de: |
| Sumario: | Abstract: We present experimental and theoretical values for the energy loss of H and He ions inZinc oxide, in mean value (stopping per unit path length) and mean square value (energyloss straggling). The measurements were carried out using the Rutherford Backscatteringtechnique for (300–2000) keV H ions and (300–5000) keV He ions. Present experimental dataare the first set of stopping and straggling values in this oxide. The theoreticalresearch was encouraged considering the molecular description of ZnO as crystal solidusing the density functional theory. The energy loss calculations for H and He ions withdifferent charge states were performed with the shelwise local plasma approximation(SLPA). The molecular versus the Bragg-rule description is also discussed. The equilibriumcharge state of He inside ZnO is analyzed based on the present stopping measurements, anda semiempirical charge state distribution is proposed. Present experimental andtheoretical values show good agreement for both the stopping and the straggling. We alsocompare our data with the SRIM2013 and with CasP5.2 values. Graphical abstract: [Figure not available: see fulltext.] © 2016, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. |
|---|