Ionization Efficiency Study for Low Energy Nuclear Recoils in Germanium

Abstract

We used the internal conversion ($E_0$ transition) of germanium-72 to indirectly measure the low energy nuclear recoils of germanium. Together with a reliable Monte Carlo package, in which we implement the internal conversion process, the data was compared to the Lindhard ($k$=0.159) and Barker-Mei models. A shape analysis indicates that both models agree well with data in the region of interest within 4%. The most probable value (MPV) of the nuclear recoils obtained from the shape analysis is 17.5 keV with an average path-length of 0.014 $\mu$m.

22 pages, 13 figures

References in corpus (1)

• Search for annual modulation in low-energy CDMS-II data

Cited by in corpus (8)

• Dark matter direct-detection experiments
• Projected Sensitivity of the SuperCDMS SNOLAB experiment
• A Dark Matter Interpretation of Excesses in Multiple Direct Detection Experiments
• Measurement of the low-energy quenching factor in germanium using an ${}^{88}$Y/Be photoneutron source
• Direct Detection of Dark Matter -- APPEC Committee Report
• Large-size sub-keV sensitive germanium detectors for the CONUS experiment
• Average Energy Expended Per e-h Pair and Energy Scale Function for Germanium-Based Dark Matter Experiments
• Gusts in the Headwind: Uncertainties in Direct Dark Matter Detection