2026-04-14T03:18:14Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2264082026-04-08T16:22:28Zcom_2072_1057col_2072_478823col_2072_478917

Electronic stopping power of diamond for electrons and positrons Fernández Varea, José María Górka, Bartosz Nilsson, Bo Electrons Electrònica Interaccions electró-positró Electrones Electronics Electron-positron interactions <p>We assess a new data set of mass electronic stopping powers of diamond for electrons and positrons.</p><p>To this end, an optical energy-loss function (OELF) for this material is generated from available</p><p>experimental dielectric properties of the valence band and photoabsorption mass attenuation</p><p>coefficients, supplemented with a Drude-type analytical expression to interpolate at intermediate</p><p>energies. From this synthetic OELF, a mean excitation energy equal to (88.5±2.0) eV is extracted and</p><p>the density-effect correction is evaluated using Fano’s simplified method. These quantities then allow</p><p>calculating the mass electronic stopping power of diamond for electrons and positrons by means of</p><p>the relativistic Bethe formula. The present results for 1 keV–1 GeV electrons in diamond are 0.9%–</p><p>3.3% smaller than those corresponding to graphite as tabulated in ICRU Report 90.</p> 2026-01-29T13:53:48Z 2026-01-29T13:53:48Z 2021-01-01 2026-01-29T13:53:48Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0031-9155 https://hdl.handle.net/2445/226408 718172 eng Versió postprint del document publicat a: https://doi.org/10.1088/1361-6560/ac1245 Physics in Medicine and Biology, 2021, vol. 66, p. 165003-1-165003-13 https://doi.org/10.1088/1361-6560/ac1245 (c) ART AMB B, 2021 info:eu-repo/semantics/openAccess 13 p. application/pdf ART AMB B Articles publicats en revistes (Física Quàntica i Astrofísica)