A measurement of the ionization efficiency of nuclear recoils in silicon

We have measured the ionization efficiency of silicon nuclear recoils with kinetic energy between 1.8 and 20 keV. We bombarded a silicon-drift diode with a neutron beam to perform an elastic-scattering experiment. A broad-energy neutron spectrum was used and the nuclear recoil energy was reconstruct...

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Detalles Bibliográficos
Autores: Izraelevitch, Federico Hernán, Amidei, D., Aprahamian, A., Arcos Olalla, R., Cancelo, Gustavo Indalecio Eugenio, Casarella, C., Chavarria, A. E., Collon, P., Estrada, Juan, Fernández Moroni, Guillermo, Guardincerri, Yann, Gutiérrez, G., Gyurjinyan, A., Kavner, A., Kilminster, B., Liao, J., Liu, Q., López, M., Molina, J., Privitera, P., Reyes, M. A., Scarpine, V., Siegl, K., Smith, M., Strauss, S., Tan, W., Tiffenberg, Javier Sebastian, Villanueva, L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/72744
Acceso en línea:http://hdl.handle.net/11336/72744
Access Level:acceso abierto
Palabra clave:DARK MATTER DETECTORS (WIMPS, AXIONS, ETC.)
INSTRUMENTATION AND METHODS FOR TIME-OF-FLIGHT (TOF) SPECTROSCOPY
NEUTRON DETECTORS (COLD, THERMAL, FAST NEUTRONS)
SOLID STATE DETECTORS
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:We have measured the ionization efficiency of silicon nuclear recoils with kinetic energy between 1.8 and 20 keV. We bombarded a silicon-drift diode with a neutron beam to perform an elastic-scattering experiment. A broad-energy neutron spectrum was used and the nuclear recoil energy was reconstructed using a measurement of the time of flight and scattering angle of the scattered neutron. The overall trend of the results of this work is well described by the theory of Lindhard et al. above 4 keV of recoil energy. Below this energy, the presented data shows a deviation from the model. The data indicates a faster drop than the theory prediction at low energies.

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