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Manzur, A.; Curioni, A.; Kastens, L.; McKinsey, D. N.; Ni, K.; Wongjirad, T.
Physical review. C, Nuclear physics, 02/2010, Letnik: 81, Številka: 2Journal Article
Liquid xenon (LXe) is an excellent material for experiments designed to detect dark matter in the form of weakly interacting massive particles (WIMPs). A low energy detection threshold is essential for a sensitive WIMP search. The understanding of the relative scintillation efficiency (L{sub eff}) and ionization yield of low energy nuclear recoils in LXe is limited for energies below 10 keV. In this article, we present new measurements that extend the energy down to 4 keV, finding that L{sub eff} decreases with decreasing energy. We also measure the quenching of scintillation efficiency caused by the electric field in LXe, finding no significant field dependence.
