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Stopping cross section of vanadium for H+ and He+ ions in a large energy interval deduced from backscattering spectra
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Johannes Kepler Univ Linz, Atom Phys & Surface Sci, Linz, Austria.
Univ Fed Rio Grande do Sul, Inst Phys, Porto Alegre, RS, Brazil.
Univ Sao Paulo, Inst Phys, Sao Paulo, Brazil.
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2018 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 424, p. 43-51Article in journal (Refereed) Published
Abstract [en]

We have experimentally determined electronic stopping cross sections of vanadium for 50-2750 keV protons and for 250-6000 keV He ions by relative measurements in backscattering geometry. To check the consistency of the employed procedure we investigate how to define adequate reference stopping cross section data and chose different reference materials. To proof consistency of different reference data sets, an intercomparison is performed to test the reliability of the evaluation procedure for a wide range of energies. This process yielded consistent results. The resulting stopping cross section data for V are compared to values from the IAEA database, to the most commonly employed semi-empirical program SRIM, and to calculations according to CasP. For helium, our results show a significant deviation of up to 10% with respect to literature and to SRIM, but are in very good agreement with the CasP predictions, in particular when charge-exchange processes are included in the model.

Place, publisher, year, edition, pages
2018. Vol. 424, p. 43-51
Keywords [en]
Stopping power, Vanadium, Bragg peak, Proton, Helium, Charge-exchange processes
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-357261DOI: 10.1016/j.nimb.2018.03.032ISI: 000432610900006OAI: oai:DiVA.org:uu-357261DiVA, id: diva2:1239974
Funder
Swedish Research Council, 821-2012-5144Swedish Foundation for Strategic Research , RIF14-0053Available from: 2018-08-20 Created: 2018-08-20 Last updated: 2018-08-20Bibliographically approved

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Moro, Marcos V.Bruckner, BarbaraPrimetzhofer, Daniel

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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Subatomic Physics

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