Observation of Anti-correlation between Scintillation and Ionization for MeV Gamma-Rays in Liquid Xenon

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dc.creatorAprile, E.
dc.creatorGiboni, K. L.
dc.creatorMajewski, P.
dc.creatorNi, K.
dc.creatorYamashita, M.
dc.date2007-04-09
dc.date.accessioned2026-07-07T08:20:38Z
dc.date.available2026-07-07T08:20:38Z
dc.descriptionA strong anti-correlation between ionization and scintillation signals produced by MeV gamma-rays in liquid xenon has been measured and used to improve the energy resolution by combining the two signals. The improvement is explained by reduced electron-ion recombination fluctuations of the combined signal compared to fluctuations of the individual signals. Simultaneous measurements of ionization and scintillation signals were carried out with Cs-137, Na-22 and Co-60 gamma rays, as a function of electric field in the liquid. A resolution of 1.7%(sigma) at 662 keV was measured at 1 kV/cm, significantly better than the resolution from either scintillation or ionization alone. A detailed analysis indicates that further improvement to less than 1%(sigma) is possible with higher light collection efficiency and lower electronic noise.
dc.identifierhttps://arxiv.org/abs/0704.1118
dc.identifierhttp://arxiv.org/abs/0704.1118
dc.identifierPhys. Rev. B 76, 014115 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.014115
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135127
dc.subjectAstrophysics
dc.titleObservation of Anti-correlation between Scintillation and Ionization for MeV Gamma-Rays in Liquid Xenon
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