Application of a large-volume NaI scintillator to search for dark matter

Details Application of a large-volume NaI scintillator to search for dark matter Application of a large-volume NaI scintillator to search for dark matter

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvc..47..425f&link_type=abstract

Physical Review C (Nuclear Physics), Volume 47, Issue 2, February 1993, pp.R425-R428

Physics

Nuclear Physics

55

Scintillation Detectors, Dark Matter, Energy Loss And Stopping Power, Supersymmetric Partners Of Known Particles

Scientific paper

Application of a large-volume NaI scintillator to search for the cold dark matter (DM) in the Universe is discussed. A low-noise (~5 keV) and low-background (~5/keV kg day) were achieved even with a large (36.5 kg) NaI scintillator. Light output efficiencies for 23Na and 127I were measured as 0.4+/-0.2 and 0.05+/-0.02, in the recoil energy range of 5-100 keV and 40-300 keV, respectively. NaI is shown to have merits of a large volume, large scattering cross sections for dark matter, and of 100% abundance of finite-spin nucleus, but to have the demerits of a small form factor due to the finite-size effect of 127I at the presently measured energy region.

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