Experimental study of ionization yield of liquid xenon for electron recoils in the energy range 2.8–80 keV

Abstract

We present the results of the first experimental study of ionization yield of\nelectron recoils with energies below 100 keV produced in liquid xenon by the\nisotopes: 37Ar, 83mKr, 241Am, 129Xe, 131Xe. It is confirmed by a direct\nmeasurement with 37Ar isotope (2.82 keV) that the ionization yield is growing\nup with the energy decrease in the energy range below ~ 10 keV accordingly to\nthe NEST predictions. Decay time of scintillation at 2.82 keV is measured to be\n25 +/- 3 ns at the electric field of 3.75 kV/cm.\n