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Observation of anticorrelation between scintillation and ionization for MeV gamma rays in liquid xenon

Observation of anticorrelation between scintillation and ionization for MeV gamma rays in liquid xenon

A strong anticorrelation between ionization and scintillation signals produced by MeV $\ensuremath{\gamma}$ 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 …