Response of undoped cryogenic CsI to low-energy nuclear recoils

Abstract

The bright scintillation of pure CsI operated at liquid-nitrogen temperature makes of this material a promising dark matter and neutrino detector. We present the first measurement of its quenching factor for nuclear recoils. Our findings indicate it is indistinguishable from that for sodium-doped CsI at room temperature. Additional properties such as light yield, afterglow, scintillation decay properties for electron and nuclear recoils, and energy proportionality are studied over the \mbox{108-165 K} temperature range, confirming the vast potential of this medium for rare-event searches.

References in corpus (6)

• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• Coherent neutrino-nucleus scattering detection with a CsI[Na] scintillator at the SNS spallation source
• Coherent Elastic Neutrino-Nucleus Scattering at the European Spallation Source
• Measurement of the ionization produced by sub-keV silicon nuclear recoils in a CCD dark matter detector
• Measurement of the low-energy quenching factor in germanium using an ${}^{88}$Y/Be photoneutron source
• Light yield of an undoped CsI crystal coupled directly to a photomultiplier tube at 77 Kelvin

Cited by in corpus (6)

• Particle Physics at the European Spallation Source
• Nuclear neutron radius and weak mixing angle measurements from latest COHERENT CsI and atomic parity violation Cs data
• First operation of undoped CsI directly coupled with SiPMs at 77 Kelvin
• Scintillation characteristics of an undoped CsI crystal at low-temperature for dark matter search
• Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT
• Cryogenic cesium iodide as a potential PET material