Measurement of the scintillation efficiency of na recoils in nai(t1) down to 10 kev nuclear recoil energy relevant to dark matter searches

H. Chagani, P. Majewski, E. J. Daw, V. A. Kudryavtsev, N. J.C. Spooner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present preliminary results of measurements of the quenching factor for Na recoils in NaI(T1) at room temperature, made at a dedicated neutron facility at the University of Sheffield. Measurements have been performed with a 2.45 MeV mono-energetic neutron generator in the energy range from 10 keV to 100 keV nuclear recoil energy. A BC5OlA liquid scintillator detector was used to tag neutrons. Cuts on pulse-shape discrimination from the BC501A liquid scintillator detector and neutron time-of-flight were performed on pulses recorded by a digitizer with a 2 ns sampling time. Measured quenching factors range from 19% to 26%, in agreement with other experiments. From pulseshape analysis, a mean time of pulses from electron and nuclear recoils are compared down to 2 keV electron equivalent energy.

Original languageEnglish (US)
Title of host publicationProceedings of the 6th International Workshop on the Identification of Dark Matter, IDM 2006
Pages262-267
Number of pages6
StatePublished - Dec 1 2007
Event6th International Workshop on the Identification of Dark Matter, IDM 2006 - Rhodes, Greece
Duration: Sep 11 2006Sep 16 2006

Publication series

NameProceedings of the 6th International Workshop on the Identification of Dark Matter, IDM 2006

Other

Other6th International Workshop on the Identification of Dark Matter, IDM 2006
CountryGreece
CityRhodes
Period9/11/069/16/06

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