Electronic stopping power of diamond for electrons and positrons
<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 an...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/226408 |
| Acceso en línea: | https://hdl.handle.net/2445/226408 |
| Access Level: | acceso abierto |
| Palabra clave: | Electrons Electrònica Interaccions electró-positró Electrones Electronics Electron-positron interactions |
| Sumario: | <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> |
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