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

Abstract

A 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.

References in corpus (9)

• Detection of very small neutrino masses in double-beta decay using laser tagging
• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
• Correlated Fluctuations between Luminescence and Ionization in Liquid Xenon
• The ZEPLIN-III dark matter detector: instrument design, manufacture and commissioning
• The XENON Dark Matter Search Experiment
• Detection of liquid xenon scintillation light with a Silicon Photomultiplier
• Gamma Ray Spectroscopy with Scintillation Light in Liquid Xenon
• Performance of a Large Area Avalanche Photodiode in a Liquid Xenon Ionization and Scintillation Chamber
• A Study of the LXeGRIT Detection Efficiency for MeV Gamma-Rays during the 2000 Balloon Flight Campaign

Cited by in corpus (56)

• Results from a search for dark matter in the complete LUX exposure
• Excess Electronic Recoil Events in XENON1T
• First Direct Detection Limits on sub-GeV Dark Matter from XENON10
• New Constraints and Prospects for sub-GeV Dark Matter Scattering off Electrons in Xenon
• The XENON100 Dark Matter Experiment
• Liquid Xenon Detectors for Particle Physics and Astrophysics
• Liquid noble gas detectors for low energy particle physics
• NEST: A Comprehensive Model for Scintillation Yield in Liquid Xenon
• First observation of two-neutrino double electron capture in ${}^{124}$Xe with XENON1T
• Search for Light Dark Matter-Electron Scatterings in the PandaX-II Experiment
• Measurement of Scintillation and Ionization Yield and Scintillation Pulse Shape from Nuclear Recoils in Liquid Argon
• Electron Ionization via Dark Matter-Electron Scattering and the Migdal Effect
• Tritium calibration of the LUX dark matter experiment
• Observation and applications of single-electron charge signals in the XENON100 experiment
• Signatures of Dark Matter Scattering Inelastically Off Nuclei
• A Global Analysis of Light and Charge Yields in Liquid Xenon
• Nuclear recoil energy scale in liquid xenon with application to the direct detection of dark matter
• Light Yield in DarkSide-10: a Prototype Two-phase Liquid Argon TPC for Dark Matter Searches
• Characterization of large area APDs for the EXO-200 detector
• Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using EXO-200
• Signal yields, energy resolution, and recombination fluctuations in liquid xenon
• Ultra-Low Energy Calibration of LUX Detector using ${}^{127}$Xe Electron Capture
• Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers
• A coherent understanding of low-energy nuclear recoils in liquid xenon
• Ionization and scintillation response of high-pressure xenon gas to alpha particles
• Electron extraction efficiency study for dual-phase xenon dark matter experiments
• Calibration of a two-phase xenon time projection chamber with a ${}^{37}$Ar source
• Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment
• Prospects for dark matter detection with inelastic transitions of xenon
• XAX: a multi-ton, multi-target detection system for dark matter, double beta decay and pp solar neutrinos
• Simultaneous reconstruction of scintillation light and ionization charge produced by 511 keV photons in liquid xenon : potential application to PET
• Expected performance of an ideal liquid argon neutrino detector with enhanced sensitivity to scintillation light
• Search for Two-Neutrino Double Electron Capture of ${}^{124}$Xe with XENON100
• A Review of NEST Models for Liquid Xenon and Exhaustive Comparison to Other Approaches
• Neutrinoless Double Beta Decay with ${}^{82}$SeF${}_6$ and Direct Ion Imaging
• Characterization of alpha and beta interactions in liquid xenon
• Ionization and scintillation of nuclear recoils in gaseous xenon
• Scintillation and Ionization Responses of Liquid Xenon to Low Energy Electronic and Nuclear Recoils at Drift Fields from 236 V/cm to 3.93 kV/cm
• Detection prospects for the second-order weak decays of ${}^{124}$Xe in multi-tonne xenon time projection chambers
• An improved measurement of electron-ion recombination in high-pressure xenon gas
• MiX: A Position Sensitive Dual-Phase Liquid Xenon Detector
• Dual-Phase Liquid Xenon Detectors for Dark Matter Searches
• Scintillation yield of liquid xenon at room temperature
• Liquid Xenon Detectors for Positron Emission Tomography
• High Resolution Gamma Ray Detection in a Dual Phase Xenon Time Projection Chamber
• Generative Adversarial Networks for Scintillation Signal Simulation in EXO-200
• A Comprehensive Study of Low-Energy Response for Xenon-Based Dark Matter Experiments
• Calibrating the scintillation and ionization responses of xenon recoils for high-energy dark matter searches
• Commissioning of a dual-phase xenon TPC at Nikhef
• Simulations of a micro-PET System based on Liquid Xenon
• Time projection chambers for gamma-ray astronomy
• Development of a ${}^{127}$Xe calibration source for nEXO
• Calibration and characterization of the RED-100 detector at the Kalinin nuclear power plant
• NA62 Liquid Krypton Purity Monitor
• On Proportional Scintillation in Very Large LXe Detectors
• Ionization Yield from Nuclear Recoils in Liquid-Xenon Dark Matter Detection