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Liquid Scintillator Response to Proton Recoils in the 10-100 keV Range

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arxiv 1804.06457 v2 pith:GMFD3FY5 submitted 2018-04-17 physics.ins-det astro-ph.COastro-ph.IMhep-exnucl-ex

Liquid Scintillator Response to Proton Recoils in the 10-100 keV Range

classification physics.ins-det astro-ph.COastro-ph.IMhep-exnucl-ex
keywords protonscintillatorenergyliquidorganicrangeresponseadequacy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the response of EJ-301 liquid scintillator to monochromatic 244.6 $\pm$ 8.4 keV neutrons, targeting the 10-100 keV proton recoil energy interval. Limited experimental information exists for proton light yield in this range, for this or any other organic scintillator. Our results confirm the adequacy of a modified Birks' model, common to all organic scintillator formulations, predicting a marked increase in quenching factor as proton energy approaches the few keV regime. The relevance of this behavior within the context of searches for low-mass particle dark matter is mentioned.

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