Calculated electronic energy loss of swift proton and helium ion beams in liquid water

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Títol: Calculated electronic energy loss of swift proton and helium ion beams in liquid water
Autors: Abril, Isabel | García Molina, Rafael | Denton Zanello, Cristian D. | Emfietzoglou, Dimitris
Grups d'investigació o GITE: Interacción de Partículas Cargadas con la Materia
Centre, Departament o Servei: Universidad de Alicante. Departamento de Física Aplicada
Paraules clau: Energy loss | Swift proton | Helium beams | Liquid water
Àrees de coneixement: Física Aplicada
Data de publicació: de juny-2008
Resum: The electronic energy loss of swift proton and helium beams in liquid water is theoretically evaluated. Our model is based in the dielectric formalism, taking into account the charge exchange of the projectile during its travel through the target. The electronic properties of liquid water are described by the MELF-GOS model, where the outer electron excitations are represented by a sum of Mermin functions fitted to the experimental data in the optical limit, whereas the inner-shell electron excitations are modelled by the corresponding atomic generalized oscillator strength. The inverse mean free path, the stopping power and the energy loss straggling are calculated, showing a reasonably good agreement with the available experimental data.
Descripció: Paper submitted to the 9th International Conference on Applications of Nuclear Techniques, Crete, Greece, 8–14 June 2008.
Patrocinadors: This work has been financially supported by the Spanish Ministerio de Educación y Ciencia (Contract Nos. FIS2006-13309-C02-01 and FIS2006-13309-C02-02). C.D.D. thanks the Spanish Ministerio de Educación y Ciencia for support under the Ramón y Cajal Program.
URI: http://hdl.handle.net/10045/25392
Idioma: eng
Tipus: info:eu-repo/semantics/conferenceObject
Revisió científica: si
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