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Kim, H J,Annenkov, A N,Boiko, R S,Buzanov, O A,Chernyak, D M,Cho, J H,Danevich, F A,Dossovitsky, A E,Rooh, Gul,Kang, U K,Kim, M J,Kim, S C,Kim, S K,Kim, Y D,Kobychev, V V,Kornoukhov, V N,Kosmyna, M B IEEE 2010 IEEE transactions on nuclear science Vol.57 No.3
<P>Search for neutrino-less double beta decay of <SUP>100</SUP>Mo is proposed using active method with Ca <SUP>100</SUP>MoO<SUB>4</SUB> scintillation crystals which show the brightest scintillation light among variety of inorganic scintillation materials containing Mo. Study of X-ray luminescence and scintillation properties such as energy response, number of photoelectrons/keV, absolute light yield, decay time, pulse shape discrimination and radioactive contamination of CaMoO<SUB>4</SUB> crystals grown by the Czochralski method with different conditions are presented. Further R&D of resolution optimization, crystal quality improvement and background reduction are underway. Significant improvement of sensitivity to neutrino-less double beta decay can be achieved by using 10 Mo enriched Ca <SUP>100</SUP>MoO<SUB>4</SUB> crystals with good energy resolution and low background. Further reduction of background induced by 48 Ca two neutrino double beta decay can be achieved by using <SUP>48</SUP>Ca depletion. We are planning to install several kilograms of Ca <SUP>100</SUP>MoO<SUB>4</SUB> crystals depleted in <SUP>48</SUP>Ca at underground laboratory for the neutrino-less double beta decay experiment in the near future.</P>