Measurement of the ionization produced by sub-keV silicon nuclear recoils in a CCD dark matter detector
Measurement of the ionization produced by sub-keV silicon nuclear recoils in a CCD dark matter detector
We report a measurement of the ionization efficiency of silicon nuclei recoiling with sub-keV kinetic energy in the bulk silicon of a charge-coupled device (CCD). Nuclear recoils are produced by low-energy neutrons ($<24\text{ }\text{ }\mathrm{keV}$) from a $^{124}\mathrm{Sb}\text{\ensuremath{-}}^{9}\mathrm{Be}$ photoneutron source, and their ionization signal is measured down to 60 eV …