2026-04-17T03:28:16Zhttps://recercat.cat/oai/request

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

00925njm 22002777a 4500 dc Fernández Varea, José María author Górka, Bartosz author Nilsson, Bo author 2026-01-29T13:53:48Z 2026-01-29T13:53:48Z 2021-01-01 2026-01-29T13:53:48Z <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> Electrons Electrònica Interaccions electró-positró Electrones Electronics Electron-positron interactions Electronic stopping power of diamond for electrons and positrons