Ionization and scintillation response of high-pressure xenon gas to alpha particles

High-pressure xenon gas is an attractive detection medium for a variety of applications in fundamental and applied physics. In this paper we study the ionization and scintillation detection properties of xenon gas at 10 bar pressure. For this purpose, we use a source of alpha particles in the NEXT-D...

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Detalles Bibliográficos
Autores: Álvarez Puerta, Vicente, Borges, Filipa I.G.M., Cárcel García, Sara, Cebrián, Susana, Cervera Villanueva, Anselmo, Conde, Carlos A.N., Dafni, Theopisti, Díaz Medina, José, Egorov, M., Esteve, Raúl, Evtoukhovitch, P., Fernandes, L.M.P., Ferrario, Paola, Ferreira, Antonio Luis, Freitas, Elisabete D.C., Gehman, Victor M., Gil Ortiz, Alejandro, Goldschmidt, Azriel, Gómez, H., Gómez Cadenas, Juan José, González-Díaz, Diego, Gutiérrez, Rafael María, Hauptman, John M., Hernando Morata, J.A., Herrera, D.C., Irastorza, Igor Garcia, Jinete, M.A., Labarga, Luis A., Laing, Andrew, Liubarsky, Igor, Lopes, J.A.M., Lorca Galindo, David, Losada, Marta, Luzón, Gloria, Marí, A., Martín-Albo Simón, Justo, Miller, Tom P., Moiseenko, A., Monrabal Capilla, Francesc, Monteiro, Cristina M.B., Mora, Francisco José, Moutinho, L.M., Muñoz Vidal, J., Natal da Luz, H., Navarro, G., Nebot Guinot, Miquel, Nygren, David R., Oliveira, Carlos A.B., Palma, R., Pérez, Javier Martin, Pérez Aparicio, J.L., Renner, Joshua, Ripoll Masferrer, Lluís, Rodríguez, Ángel Y., Rodríguez Samaniego, Javier, Santos, Filomena P., dos Santos, Joaquim M.F., Seguí, Laura, Serra Díaz-Cano, Luis, Shuman, Derek B., Simón Estévez, Ander, Sofka, C., Sorel, Michel, Toledo, J.F., Tomás, A., Torrent Collell, Jordi, Tsamalaidze, Zviadi, Vázquez, D., Veloso, João F.C.A., Webb, R.C., White, James T., Yahlali Haddou, Nadia
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2013
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/17006
Acceso en línea:http://hdl.handle.net/10256/17006
Access Level:acceso abierto
Palabra clave:Ionització
Ionization
Comptadors de centelleig
Scintillation (physics)
Excitació nuclear
Nuclear excitation
Detectors de radiació
Nuclear counters
Descripción
Sumario:High-pressure xenon gas is an attractive detection medium for a variety of applications in fundamental and applied physics. In this paper we study the ionization and scintillation detection properties of xenon gas at 10 bar pressure. For this purpose, we use a source of alpha particles in the NEXT-DEMO time projection chamber, the large scale prototype of the NEXT-100 neutrinoless double beta decay experiment, in three different drift electric field configurations. We measure the ionization electron drift velocity and longitudinal diffusion, and compare our results to expectations based on available electron scattering cross sections on pure xenon. In addition, two types of measurements addressing the connection between the ionization and scintillation yields are performed. On the one hand we observe, for the first time in xenon gas, large event-by-event correlated fluctuations between the ionization and scintillation signals, similar to that already observed in liquid xenon. On the other hand, we study the field dependence of the average scintillation and ionization yields. Both types of measurements may shed light on the mechanism of electron-ion recombination in xenon gas for highly-ionizing particles. Finally, by comparing the response of alpha particles and electrons in NEXT-DEMO, we find no evidence for quenching of the primary scintillation light produced by alpha particles in the xenon gas

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