Ionization Efficiency Study for Low Energy Nuclear Recoils in Germanium
arXiv:1304.6773 · doi:10.1016/j.astropartphys.2013.06.010
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 $μ$m.
22 pages, 13 figures