Scintillation Response of Liquid Xenon to Low Energy Nuclear Recoils

Details Scintillation Response of Liquid Xenon to Low Energy Nuclear Recoils Scintillation Response of Liquid Xenon to Low Energy Nuclear Recoils

2005-03-29

arxiv.org/abs/astro-ph/0503621v1

Phys.Rev. D72 (2005) 072006

Astronomy and Astrophysics

Astrophysics

16 pages, 13 figures. Submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.72.072006

Liquid Xenon (LXe) is expected to be an excellent target and detector medium to search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs). Knowledge of LXe ionization and scintillation response to low energy nuclear recoils expected from the scattering of WIMPs by Xe nuclei is important for determining the sensitivity of LXe direct detection experiments. Here we report on new measurements of the scintillation yield of Xe recoils with kinetic energy as low as 10 keV. The dependence of the scintillation yield on applied electric field was also measured in the range of 0 to 4 kV/cm. Results are in good agreement with recent theoretical predictions that take into account the effect of biexcitonic collisions in addition to the nuclear quenching effect.

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