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Mixed simulation of multiple elastic scattering of electrons and positrons using partial-wave differential cross sections
dc.contributor.author | Benedito Benet, Ernest |
dc.contributor.author | Fernández-Varea, Jose Maria |
dc.contributor.author | Salvat, Francesc |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Organització d'Empreses |
dc.date.accessioned | 2010-05-04T10:44:39Z |
dc.date.available | 2010-05-04T10:44:39Z |
dc.date.created | 2001-05 |
dc.date.issued | 2001-05 |
dc.identifier.citation | Benedito, 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.identifier.issn | 0168-583X |
dc.identifier.uri | http://hdl.handle.net/2117/7123 |
dc.description.abstract | We 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.extent | 20 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Elastic scattering |
dc.title | Mixed simulation of multiple elastic scattering of electrons and positrons using partial-wave differential cross sections |
dc.type | Article |
dc.subject.lemac | Dispersió (Física) |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 1917861 |
dc.description.version | Postprint (published version) |
local.citation.author | Benedito, E.; Fernandez-Varea, J.; Salvat, F. |
local.citation.publicationName | Nuclear instruments and methods in physics research. Section B, beam interaction |
local.citation.volume | 174 |
local.citation.number | 1-2 |
local.citation.startingPage | 91 |
local.citation.endingPage | 110 |
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