A measurement of the time profile of scintillation induced by low energy gamma-rays in liquid xenon with the XMASS-I detector

Abstract

We report the measurement of the emission time profile of scintillation from gamma-ray induced events in the XMASS-I 832 kg liquid xenon scintillation detector. Decay time constant was derived from a comparison of scintillation photon timing distributions between the observed data and simulated samples in order to take into account optical processes such as absorption and scattering in liquid xenon. Calibration data of radioactive sources, ${}^{55}$Fe, ${}^{241}$Am, and ${}^{57}$Co were used to obtain the decay time constant. Assuming two decay components, ${\tau }_1$ and ${\tau }_2$, the decay time constant ${\tau }_2$ increased from 27.9 ns to 37.0 ns as the gamma-ray energy increased from 5.9 keV to 122 keV. The accuracy of the measurement was better than 1.5 ns at all energy levels. A fast decay component with ${\tau }_1\sim 2$ ns was necessary to reproduce data. Energy dependencies of ${\tau }_2$ and the fraction of the fast decay component were studied as a function of the kinetic energy of electrons induced by gamma-rays. The obtained data almost reproduced previously reported results and extended them to the lower energy region relevant to direct dark matter searches.

arXiv comment7 pages, 3 figures, accepted for publication in Nucl. Instrum. Meth. A

References in corpus (14)

• Search for Neutrinoless Double-Beta Decay in ${}^{136}$Xe with EXO-200
• The XENON100 Dark Matter Experiment
• The Large Underground Xenon (LUX) Experiment
• XMASS detector
• The MEG detector for $\mu +\to e+\gamma$ decay search
• Measurements of Scintillation Efficiency and Pulse-Shape for Low Energy Recoils in Liquid Xenon
• Search for bosonic superweakly interacting massive dark matter particles with the XMASS-I detector
• Modeling Pulse Characteristics in Xenon with NEST
• Search for inelastic WIMP nucleus scattering on ${}^{129}$Xe in data from the XMASS-I experiment
• Characterization of the QUartz Photon Intensifying Detector (QUPID) for Noble Liquid Detectors
• Scintillation-only Based Pulse Shape Discrimination for Nuclear and Electron Recoils in Liquid Xenon
• Time and space reconstruction in optical, non-imaging, scintillator-based particle detectors
• Search for two-neutrino double electron capture on ${}^{124}$Xe with the XMASS-I detector
• A Study of the Scintillation Induced by Alpha Particles and Gamma Rays in Liquid Xenon in an Electric Field

Cited by in corpus (12)

• A direct dark matter search in XMASS-I
• Event vertex and time reconstruction in large volume liquid scintillator detector
• Search for sub-GeV dark matter by annual modulation using XMASS-I detector
• Liquid xenon scintillation measurements and pulse shape discrimination in the LUX dark matter detector
• Improved search for two-neutrino double electron capture on ${}^{124}$Xe and ${}^{126}$Xe using particle identification in XMASS-I
• Field dependence of electronic recoil signals in a dual-phase liquid xenon time projection chamber
• Search for WIMP-${}^{129}$Xe inelastic scattering with particle identification in XMASS-I
• Direct dark matter searches with the full data set of XMASS-I
• Precision measurements of the scintillation pulse shape for low-energy recoils in liquid xenon
• GPU-based optical simulation of the DARWIN detector
• Scintillation decay-time constants for alpha particles and electrons in liquid xenon
• Search for neutrinoless quadruple beta decay of ${}^{136}$Xe in XMASS-I