Double beta decay study of 48Ca by CaF2 scintillator
作者： S. Umehara , S. Tomii , K. Mukaida , S. Yoshida , H. Ejiri
DOI: 10.1016/S0375-9474(03)01115-1
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摘要: Abstract A CaF 2 scintillation detector system (ELEGANT VI) is developed to search for neutrinoless double beta decay (0νDBD) of 48 Ca. No events were observed around the Q -value energy region after analysis 4.23 kg yr data. To derive lower limit half-life, expected number background was estimated by a Monte Carlo simulation using measured activities 214 Bi and 220 Rn inside crystals. new obtained be 1.8 × 10 22 at 90% C.L.
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