The mass of the electron neutrino and electron capture in <SUP>163</SUP>Ho
- Yasumi, S.
- Rajasekaran, G.
- Ando, M.
- Ochiai, F.
- Ikeda, H.
- Ohta, T.
- Stefan, P. M.
- Maruyama, M.
- Hashimoto, N.
- Fujioka, M.
- Ishii, K.
- Shinozuka, T.
- Sera, K.
- Omori, T.
- Izawa, G.
- Yagi, M.
- Masumoto, K.
- Shima, K.
DOIAbstract
To determine the mass of the electron neutrino, electron capture in <SUP>163</SUP>Ho was studied. From the intensity of M X-rays and the total number of <SUP>163</SUP>Ho atoms in a source, as determined by the PIXE method, the partial M-capture half life of <SUP>163</SUP>Ho was estimated to be (4.5 ± 1.5) × 10<SUP>4</SUP> yr. A relation between the Q-value of <SUP>163</SUP>Ho and the mass of the electron neutrino was obtained
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