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dc.contributor.authorBenedito Benet, Ernest
dc.contributor.authorFernández-Varea, Jose Maria
dc.contributor.authorSalvat, Francesc
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Organització d'Empreses
dc.identifier.citationBenedito, E.; Fernandez-Varea, J.; Salvat, F. Mixed simulation of multiple elastic scattering of electrons and positrons using partial-wave differential cross sections. "Nuclear instruments and methods in physics research. Section B, beam interaction", Maig 2001, vol. 174, núm. 1-2, p. 91-110.
dc.description.abstractWe describe an algorithm for mixed (class II) simulation of electron multiple elastic scattering using numerical differential cross-sections (DCS), which is applicable in a wide energy range, from ~100 eV to ~1 GeV. DCSs are calculated by partial-wave analysis, or from a suitable high-energy approximation, and tabulated on a grid of scattering angles and electron energies. The size of the required DCS table is substantially reduced by means of a change of variable that absorbs most of the energy dependence of the DCS. That is, the scattering angle h is replaced by a variable u, whose probability distribution function varies smoothly with the kinetic energy of the electron. A fast procedure to generate random values of u in restricted intervals is described. The algorithm for the simulation of electron transport in pure elastic scattering media (with energy-loss processes switched off) is obtained by combining this sampling procedure with a simple model for space displacements. The accuracy and stability of this algorithm is demonstrated by comparing results with those from detailed, event by event, simulations using the same DCSs. A complete transport code, including energy losses and the production of secondary radiations, is obtained by coupling the present elastic scattering simulation algorithm to the general-purpose Monte Carlo program PENELOPE. Simulated angular distributions of MeV electrons backscattered in aluminium and gold are in good agreement with experimental data.
dc.format.extent20 p.
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshElastic scattering
dc.titleMixed simulation of multiple elastic scattering of electrons and positrons using partial-wave differential cross sections
dc.subject.lemacDispersió (Física)
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorBenedito, E.; Fernandez-Varea, J.; Salvat, F.
local.citation.publicationNameNuclear instruments and methods in physics research. Section B, beam interaction

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