Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV
arXiv:1407.7348 · doi:10.1209/0295-5075/108/12001
Abstract
The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ionization yield for nuclear recoils in liquid Ar has for the first time been measured in the higher energy range, at 80 and 233 keV, using a two-phase Cryogenic Avalanche Detector (CRAD) and DD neutron generator. The ionization yield in liquid Ar at an electric field of 2.3 kV/cm amounted to 7.8+/-1.1 and 9.7+/-1.3 e-/keV at 80 and 233 keV respectively. The Jaffe model for nuclear recoil-induced ionization, in contrast to that Thomas-Imel, can probably consistently describe the energy dependence of the ionization yield.
6 pages, 6 figures. Fig. 6 changed. Submitted to EPL
References in corpus (8)
- Dark Matter Results from 225 Live Days of XENON100 Data
- New results from DAMA/LIBRA
- A concise review on THGEM detectors
- Liquid noble gas detectors for low energy particle physics
- First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground Laboratory
- Nuclear recoil energy scale in liquid xenon with application to the direct detection of dark matter
- Detection of reactor antineutrino coherent scattering off nuclei with a two-phase noble gas detector
- Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors
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- About detecting very low mass black holes in LAr detectors