Double beta decay of 48Ca studied by CaF2(Eu) scintillators
Journal of physics(2008)
摘要
We report the new limit on the half-life of neutrino-less double beta decay(0νββ) of 48Ca. In order to achieve the background free measurement, measurement of pulse shape was essential. We have observed no event in the Qββ-value region. We set the new limit on 0νββ half-life as T0νββ1/2 > 40 × 1022 year.
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关键词
double beta decay
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