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

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ID: 267943
2013
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Abstract
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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Authors V Álvarez,F I G Borges,S Cárcel,S Cebrián,A Cervera,Carlos Conde,Theopisti Dafni,Jose Diaz,M Egorov,R Esteve,P Evtoukhovitch,L M P Fernandes,P Ferrario,Antonio Ferreira,Elisabete Freitas,V M Gehman,A Gil,A Goldschmidt,H Gómez,J J Gómez-Cadenas,Diego Gonzalez Diaz,R M Gutiérrez,J Hauptman,J A Hernando Morata,D C Herrera,Igor García Irastorza,M A Jinete,L Labarga,A Laing,I Liubarsky,José Matias-Lopes,D Lorca,Marta Losada,G Luzón,A Mari,Justo Martín-Albo,T Miller,A Moiseenko,Francesc Monrabal,Cristina Maria Bernardes Monteiro,F J Mora,Luis Moutinho,Javier Muñoz Vidal,Hugo Natal Da Luz,G Navarro,Miquel Nebot Guinot,D Nygren,C A B Oliveira,Roberto Palma,J Perez,José Luis Pérez Aparicio,J Renner,Lluís Ripoll,A Rodriguez,Filomena Santos,Joaquim Marques Ferreira Dos Santos,L Segui,L Serra,D Shuman,A Simon,C Sofka,Michel Sorel,J F Toledo,A Tomàs,J Torrent,Z Tsamalaidze,D Vázquez,J F C A Veloso,R Webb,J T White,Nadia Yahlali,J Rodríguez;V Álvarez;F I G Borges;S Cárcel;S Cebrián;A Cervera;Carlos Conde;Theopisti Dafni;Jose Diaz;M Egorov;R Esteve;P Evtoukhovitch;L M P Fernandes;P Ferrario;Antonio Ferreira;Elisabete Freitas;V M Gehman;A Gil;A Goldschmidt;H Gómez;J J Gómez-Cadenas;Diego Gonzalez Diaz;R M Gutiérrez;J Hauptman;J A Hernando Morata;D C Herrera;Igor García Irastorza;M A Jinete;L Labarga;A Laing;I Liubarsky;José Matias-Lopes;D Lorca;Marta Losada;G Luzón;A Mari;Justo Martín-Albo;T Miller;A Moiseenko;Francesc Monrabal;Cristina Maria Bernardes Monteiro;F J Mora;Luis Moutinho;Javier Muñoz Vidal;Hugo Natal Da Luz;G Navarro;Miquel Nebot Guinot;D Nygren;C A B Oliveira;Roberto Palma;J Perez;José Luis Pérez Aparicio;J Renner;Lluís Ripoll;A Rodriguez;Filomena Santos;Joaquim Marques Ferreira Dos Santos;L Segui;L Serra;D Shuman;A Simon;C Sofka;Michel Sorel;J F Toledo;A Tomàs;J Torrent;Z Tsamalaidze;D Vázquez;J F C A Veloso;R Webb;J T White;Nadia Yahlali;J Rodríguez;
Journal journal of instrumentation
Year 2013
DOI
10.1088/1748-0221/8/05/p05025
URL
https://sciprofiles.com/publication/view/e7ca5811110e7200c08c23f703cea95f
Keywords
diffusion recombination electric field helium ionization time projection chamber electron scattering applied physics scintillation counter electron drift velocity

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