Correlated fluctuations between luminescence and ionization in liquid xenon

By E. Conti, R. DeVoe, G. Gratta, T. Koffas, S. Waldman, J. Wodin, D. Akimov, G. Bower, M. Breidenbach, R. Conley and 12 more. 2003

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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, for the first time, a strong anti-correlation between the two at a microscopic level, with coefficient -0.80 < {rho}{sub ep} < -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.

Subfields: Atomic and Molecular Physics, and Optics, Radiation, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/b1490b58e777b30ad5d0f5614e0e1953a5b620ed