Author/Authors :
E Holzschuh، نويسنده , , W Kündig، نويسنده , , L Palermo، نويسنده , , H Stüssi، نويسنده , , P Wenk، نويسنده ,
Abstract :
The β-spectrum of 63Ni has been measured with high precision in order to search for effects of heavy neutrinos. For assumed neutrino masses in the range 4 to 30 keV, upper limits of 10−3 or less are reported for the mixing probability.
