2021
DOI: 10.1103/physrevd.104.112001
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Measurement of charge and light yields for Xe127 L -shell electron captures in liquid xenon

Abstract: Measurement of charge and light yields for math xmlns="http://www.w3.org/1998/Math/MathML" display="inline">mrow>mmultiscripts>mrow>mi>Xe/mi>/ mrow>mprescripts>/mprescripts>none>/none>mrow>mn >127/mn>/mrow>/mmultiscripts>/mrow>/math> math xmlns="http://www.w3.org/1998/Math/MathML" display="inline">mi>L/mi>/math>-shell electron captures in liquid xenon

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Cited by 18 publications
(16 citation statements)
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“…[32], which account for a ∼23% suppression of the rate due to atomic binding effects. Additionally, we account for a ∼9% reduction of the charge yield for L-shell electron recoils, as recently observed in electron-capture calibrations of the XELDA detector [33]. This has the effect of widening the solar neutrino electronic recoil band and thus slightly increases the number of electronic recoil background events in the nuclear recoil signal band.…”
Section: B Background Componentsmentioning
confidence: 94%
“…[32], which account for a ∼23% suppression of the rate due to atomic binding effects. Additionally, we account for a ∼9% reduction of the charge yield for L-shell electron recoils, as recently observed in electron-capture calibrations of the XELDA detector [33]. This has the effect of widening the solar neutrino electronic recoil band and thus slightly increases the number of electronic recoil background events in the nuclear recoil signal band.…”
Section: B Background Componentsmentioning
confidence: 94%
“…The Noble Element Simulation Technique (NEST) [13,14] is a response model which well-describes S1 and S2 production for low-energy ER sources [15,16] including 37 Ar [10,17]. The S2/S1 signal from 37 Ar electron capture may be slightly affected by the atomic relaxation following the K-shell vacancy, but a recent measurement of 127 Xe electron capture indicates this should be a very small effect in 37 Ar [18] and thus this effect is not considered here.…”
Section: Experimental Signature Of 37 Ar In Lxe Tpcsmentioning
confidence: 99%
“…Historically, a universal ER response has been applied to neutrino-induced ERs, however, at low energies the electronic structure of the target atoms becomes important. A simple, data-driven model of this effect (calibrated using electron capture sources) predicts only a small impact on overall sensitivity for next-generation DM experiments [69], but the low-side tail of the ionization-toscintillation ratio has not been measured for this class of events. Internal electroncapture sources can be used to calibrate this effect [69][70][71].…”
Section: Ex-situ Model Calibrationmentioning
confidence: 99%
“…A simple, data-driven model of this effect (calibrated using electron capture sources) predicts only a small impact on overall sensitivity for next-generation DM experiments [69], but the low-side tail of the ionization-toscintillation ratio has not been measured for this class of events. Internal electroncapture sources can be used to calibrate this effect [69][70][71]. One of the dominant backgrounds for solid state detectors in the keV-range is Compton scattering, which arises from higher energy photons emitted by background sources scattering off atomic shells, which presents a flat background down until the binding energies-at each of which there are unique step like features in the energy spectra [72,73].…”
Section: Ex-situ Model Calibrationmentioning
confidence: 99%