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- W1851430003 abstract "Although neutrinos are probably the most abundant particles of the universe their mass is yet unknown. The oscillation experiments proved that at least one of the neutrino mass states is heavier than 0.05 eV. Strongly model dependent interpretations of cosmological observations yielded for the sum of the neutrino mass states the values between 0.12 and 1.7 eV. The almost model independent analyses of measured tritium b{eta}- spectra provided the upper limit of the effective electron neutrino mass of 2 eV. The upcoming KATRIN experiment aims to achieve ten times higher sensitivity. In this review, we try to summarize the experience of two generations of b{eta}-ray spectroscopists who improved the limit of the neutrino mass by three orders of magnitude. We describe important steps in the development of radioactive sources and electron spectrometers, and recapitulate the lessons from now disproved claims for the neutrino of 30 eV mass and the 17 keV neutrino with an admixture larger than 0.07 %. We also pay attention to new experimental approaches as well as to searches for hypothetical eV and keV sterile neutrinos." @default.
- W1851430003 created "2016-06-24" @default.
- W1851430003 creator A5047947981 @default.
- W1851430003 creator A5052828133 @default.
- W1851430003 date "2015-04-28" @default.
- W1851430003 modified "2023-09-27" @default.
- W1851430003 title "Searches for Active and Sterile Neutrinos in Beta-Ray Spectra" @default.
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