The mass of the electron neutrino and electron capture in 163Ho

S. Yasumi, G. Rajasekaran, M. Ando, F. Ochiai, H. Ikeda, T. Ohta, P. M. Stefan, M. Maruyama, N. Hashimoto, M. Fujioka, K. Ishii, T. Shinozuka, K. Sera, T. Omori, G. Izawa, M. Yagi, K. Masumoto, K. Shima

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


To determine the mass of the electron neutrino, electron capture in 163Ho was studied. From the intensity of M X-rays and the total number of 163Ho atoms in a source, as determined by the PIXE method, the partial M-capture half life of 163Ho was estimated to be (4.5 ± 1.5) × 104 yr. A relation between the Q-value of 163Ho and the mass of the electron neutrino was obtained.

Original languageEnglish
Pages (from-to)461-464
Number of pages4
JournalPhysics Letters B
Issue number5-6
Publication statusPublished - 1983 Mar 17
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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