Correlated fluctuations between luminescence and ionization in liquid xenon

2003/03/09 by E. Conti, R. DeVoe, G. Gratta +24 · 7 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #Radiation Detection and Scintillator Technologies #cond-mat.mtrl-sci #hep-ex

paper · pdf · doi:10.1103/physrevb.68.054201

published as Phys.Rev.B68:054201,2003 · 6 pages, 7 figures

arxiv created 2003/03/09 · openalex publication_date 2003/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The ionization of liquefied noble gases by radiation is known to be accompanied by fluctuations much larger than predicted by Poisson statistics. We have studied the fluctuations of both scintillation and ionization in liquid xenon and have measured a strong anti-correlation between the two at a microscopic level, with coefficient \ensuremath-0.80<\ensuremathρ_ep<\ensuremath-0.60. This provides direct experimental evidence that electron-ion recombination is partially responsible for the anomalously large fluctuations and at the same time allows substantial improvement of calorimetric energy resolution.

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