Production and suppression of delayed light in NaI
arXiv:2208.09974 · doi:10.1103/PhysRevD.107.032010
Abstract
We investigate a hypothesis that energy accumulation and the subsequent release in NaI(Tl) may lead to pulse-like events in the few-keV energy regime, a phenomenon suggested by the crystal manufacturing company Saint-Gobain, who provided the crystals for DAMA-LIBRA. While we observed delayed long-lasting light emission in a 3" NaI(Tl) crystal after exposing it to UV light, the delayed light consists primarily of single photons that are uncorrelated with each other. We also observe delayed light emission in NaI(Tl) following gamma radiation and large ionization events like cosmic-ray muons. We found that irradiating the crystal with red light after UV exposure significantly suppressed delayed photon emissions.
References in corpus (16)
- First results from DAMA/LIBRA and the combined results with DAMA/NaI
- Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
- The DAMA/LIBRA apparatus
- An experiment to search for dark matter interactions using sodium iodide detectors
- Annual modulation results from three-year exposure of ANAIS-112
- EXCESS workshop: Descriptions of rising low-energy spectra
- Tests on NaI(Tl) crystals for WIMP search at the Yangyang Underground Laboratory
- Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target
- Fitting the annual modulation in DAMA with neutrons from muons and neutrinos
- Quantifying the evidence for Dark Matter in CoGeNT data
- Impure Thoughts on Inelastic Dark Matter
- Muon-induced neutrons do not explain the DAMA data
- High sensitivity characterization of an ultra-high purity NaI(Tl) crystal scintillator with the SABRE proof-of-principle detector
- Bulk NaI(Tl) scintillation low energy events selection with the ANAIS-0 module
- Correlated Single- and Few-Electron Backgrounds Milliseconds after Interactions in Dual-Phase Liquid Xenon Time Projection Chambers
- Detecting Low-Energy Interactions and the Effects of Energy Accumulation in Materials