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Title: Performance of a large area avalanche photodiode in a liquid xenon ionization and scintillation chamber
Authors: Ni, K. 
Aprile, E. 
Day, D. 
Giboni, K. L. 
Lopes, J. A. M. 
Majewski, P. 
Yamashita, M. 
Keywords: Liquid xenon; Dark matter
Issue Date: 2005
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 551:2-3 (2005) 356-363
Abstract: Scintillation light produced in liquid xenon (LXe) by alpha particles, electrons and gamma-rays was detected with a large area avalanche photodiode (LAAPD) immersed in the liquid. The alpha scintillation yield was measured as a function of applied electric field. We estimate the quantum efficiency of the LAAPD to be 45%. The best energy resolution from the light measurement at zero electric field is 7.5%([sigma]) for 976 keV internal conversion electrons from 207Bi and 2.6%([sigma]) for 5.5 MeV alpha particles from 241Am. The detector used for these measurements was also operated as a gridded ionization chamber to measure the charge yield. We confirm that using a LAAPD in LXe does not introduce impurities which inhibit the drifting of free electrons.
DOI: 10.1016/j.nima.2005.06.054
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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