Characterization of argon recoils at the keV scale with ReD and ReD+

Le résumé fourni par la source

Abstract The ReD experiment measured the ionization yield Q y of argon for nuclear recoils in the 2–10 keV range using a dual-phase Time Projection Chamber irradiated with neutrons from a 252 Cf fission source. The measurement extends coverage below 7 keV, confirms consistency with previous data above 7 keV, and indicates a higher Q y at lower energies. These results are relevant for argon-based experiments searching for dark matter in the form of low-mass Weakly Interacting Massive Particles, which are very sensitive to the modeling of the detector response in this energy range.

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